7-Zip

7-Zip 4.58 alpha 2 was released.

7-Zip for 32-bit Windows:
http://www.7-zip.org/alpha/7z458a2.exe

7-Zip for 64-bit Windows x64:
http://www.7-zip.org/alpha/7z458a2-x64.msi

What's new:
- Small changes in Deflate and LZMA compression.
- Some speed optimizations.
- New localizations: Punjabi (Indian), Pashto.

You can post some benchmark results here for 7-Zip 4.57 / 4.58 alpha 2. Just call:
7z b
Write also some information about your CPU: CPU Type/Frequency.

Check also 7z/LZMA compression ratio for your files. 7-Zip 4.58 alpha 2 can provide slightly better compression ratio for some files.

Igor, Can you add support multivolume rar files?

http://sourceforge.net/forum/forum.php?thread_id=1897862&forum_id=45797

Thank you.

strange thing you ask, because i just did that and got no errors.
i compressed a big file to multivolume (8 volumes, each 100 MB) RAR archive and unsed 7-zip 4.57
for decompression. It worked flawlessly. Although while 7-Zip's decompresseion it always showed name of first file in the window, but really it already was at work at the following archive parts.

while testing:
http://666kb.com/i/auug3l8pzpknhs9o8.png

testing result message:
http://666kb.com/i/auug43vjxcfku7mrc.png

AM2 X2-4600+ (stock speed), 2 GB DDR2-800 dualchannel RAM, OS=XP-x64
---

C:\temp\457>7z b -mmt4

7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 2047 MB, # CPU hardware threads: 2
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 3697 194 1849 3597 | 44484 200 2295 4579
23: 3631 196 1888 3699 | 43927 200 2297 4583
24: 3496 199 1887 3759 | 43593 200 2304 4609
25: 3362 198 1942 3838 | 42884 200 2302 4594
----------------------------------------------------------------
Avr: 197 1892 3723 200 2299 4591
Tot: 198 2096 4157

C:\temp\457>cd "c:\Program Files\7-Zip"

C:\Program Files\7-Zip>7z b -mmt4

7-Zip [64] 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 2047 MB, # CPU hardware threads: 2
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 4260 197 2105 4144 | 48538 200 2501 4996
23: 4348 200 2220 4430 | 47676 199 2496 4975
24: 4041 198 2199 4345 | 47203 200 2498 4991
25: 3909 198 2253 4463 | 46432 199 2498 4974
----------------------------------------------------------------
Avr: 198 2194 4345 199 2498 4984
Tot: 199 2346 4665

C:\temp\458a2>7z b -mmt4

7-Zip 4.58 alpha 1 Copyright (c) 1999-2007 Igor Pavlov 2007-12-24

RAM size: 2047 MB, # CPU hardware threads: 2
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22:


ERROR: Can't allocate required memory!

C:\temp\458a2>cd "c:\Program Files\7-Zip"

C:\Program Files\7-Zip>7z.exe b -mmt4

7-Zip [64] 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 2047 MB, # CPU hardware threads: 2
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 4475 199 2185 4353 | 48149 200 2481 4956
23: 4278 199 2192 4359 | 47554 199 2487 4962
24: 4119 199 2228 4429 | 47101 200 2490 4980
25: 3964 199 2269 4526 | 46608 199 2503 4993
----------------------------------------------------------------
Avr: 199 2219 4417 200 2490 4973
Tot: 199 2354 4695


---
* 458a2 32BIT did'nt work on XP x64, but 458a1 did.

* LZMA ULTRA (2 threads) compresses at about double speed than ZIP ULTRA DEFLATE64KB (4 threads) ;-)

* compressed size of decompressed crysis demo objects.pak (for comparison):
441,947,348 Objects.pak
315,929,549 objects-4.57-LZMA-ULTRA-64MB-ws192-lc4-4GB.7z
411,558,674 objects-4.57-ZIP-ULTRA-64KB-ws192.zip
315,828,269 objects-4.58a2-LZMA-ULTRA-64MB-ws192-lc4-4GB.7z
411,342,043 objects-4.58a2-ZIP-ULTRA-64KB-ws192.zip

AMD K7 XP-3200+, OS=W2K

new version did not work here, but alpha1 did:
---

H:\tmp\458a2>7z.exe b -mmt2

7-Zip 4.58 alpha 1 Copyright (c) 1999-2007 Igor Pavlov 2007-12-24

RAM size: 1023 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22:


ERROR: Can't allocate required memory!

H:\tmp\458a2>cd ..\458a1

H:\tmp\458a1>7z.exe b -mmt2

7-Zip 4.58 alpha 1 Copyright (c) 1999-2007 Igor Pavlov 2007-12-24

RAM size: 1023 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 1479 98 1463 1439 | 17960 99 1864 1850
23: 1397 97 1466 1424 | 17776 99 1877 1855
24: 1312 99 1423 1411 | 17514 100 1858 1852
25: 1229 99 1422 1403 | 17365 99 1876 1860
----------------------------------------------------------------
Avr: 98 1444 1419 99 1869 1854
Tot: 99 1656 1637

There were incorrect files in 7z458a2.exe.
Just redownload it again:
http://www.7-zip.org/alpha/7z458a2.exe

AMD K7 Barton XP-3200+ (2,2 GHZ), Nforce2 Ultra400, 2*512MB DDR1-400 Dualchannel, OS=W2K
---

C:\Programme\7-Zip>start /B /HIGH 7z b -mmt2

7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 1023 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 1487 99 1455 1446 | 18513 99 1926 1906
23: 1405 99 1443 1431 | 18081 99 1898 1887
24: 1314 99 1425 1412 | 17691 98 1906 1871
25: 1223 99 1417 1397 | 17632 99 1905 1889
----------------------------------------------------------------
Avr: 99 1435 1422 99 1909 1888
Tot: 99 1672 1655


H:\tmp\458a2>start /B /HIGH 7z b -mmt2

7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 1023 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 1575 99 1541 1532 | 18474 100 1910 1902
23: 1467 98 1525 1495 | 18151 99 1913 1895
24: 1385 99 1503 1489 | 17691 98 1909 1871
25: 1289 99 1489 1472 | 17707 99 1910 1897
----------------------------------------------------------------
Avr: 99 1514 1497 99 1911 1891
Tot: 99 1712 1694

AMD Athlon 64 (Orleans-512), 2000 MHz (10 x 200)
nVIDIA nForce 560
Dual DDR2-800 (5-5-5-18 CR1)
Windows XP SP2 Professional

===================================================================
7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 2046 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 1664 99 1639 1618 | 18285 100 1887 1883
23: 1586 99 1631 1616 | 18083 100 1895 1887
24: 1539 99 1679 1654 | 17964 99 1909 1900
25: 1479 99 1705 1689 | 17732 100 1908 1900
----------------------------------------------------------------
Avr: 99 1663 1644 100 1900 1892
Tot: 99 1781 1768

===================================================================
7-Zip 4.58 alpha 1 Copyright (c) 1999-2007 Igor Pavlov 2007-12-24

RAM size: 2046 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 1633 99 1608 1588 | 17926 100 1850 1846
23: 1591 98 1656 1621 | 17744 100 1856 1852
24: 1534 98 1676 1649 | 17516 100 1861 1852
25: 1476 99 1707 1685 | 17317 100 1860 1855
----------------------------------------------------------------
Avr: 98 1662 1636 100 1857 1851
Tot: 99 1759 1744

===================================================================
7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 2046 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 1751 99 1715 1703 | 18471 100 1906 1902
23: 1704 98 1765 1736 | 18254 100 1913 1905
24: 1660 99 1805 1785 | 18056 99 1922 1909
25: 1575 99 1814 1798 | 17806 99 1918 1908
----------------------------------------------------------------
Avr: 99 1775 1756 100 1915 1906
Tot: 99 1845 1831

Hello everyone,

Athlon XP 1700+ (1466MHz)
7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 511 MB, # CPU hardware threads: 1
RAM usage: 419 MB, # Benchmark threads: 1

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 677 97 678 658 | 10599 95 1154 1091
23: 589 93 642 600 | 10614 95 1165 1108
24: 525 90 625 565 | 10720 98 1152 1133
25: 520 96 616 594 | 10436 98 1144 1118
----------------------------------------------------------------
Avr: 94 640 604 96 1154 1113
Tot: 95 897 858


Best regards!

7-Zip [64] 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 2046 MB, # CPU hardware threads: 4
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 8603 344 2435 8369 | 109220 389 2889 11242
23: 8398 329 2604 8557 | 107647 389 2889 11232
24: 8236 348 2541 8855 | 102352 376 2877 10822
25: 8032 354 2592 9170 | 103516 387 2869 11089
----------------------------------------------------------------
Avr: 344 2543 8738 385 2881 11097
Tot: 364 2712 9917

7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 2046 MB, # CPU hardware threads: 4
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 8603 342 2447 8369 | 103619 386 2765 10665
23: 8082 334 2467 8234 | 102985 388 2768 10746
24: 7867 339 2497 8459 | 99957 385 2742 10569
25: 7708 354 2483 8801 | 96778 381 2721 10367
----------------------------------------------------------------
Avr: 342 2473 8466 385 2749 10587
Tot: 364 2611 9526

configuration is the same as here: http://sourceforge.net/forum/message.php?msg_id=4695063

Athlon X2 6000+, 6GB DDR2, XP64 SP2


--- 4.57 x64 ----------------------------------------------------

C:\Program Files\7-Zip>7z.exe b -mmt4

7-Zip [64] 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 6143 MB, # CPU hardware threads: 2
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 5070 196 2514 4932 | 58591 198 3045 6031
23: 4847 196 2521 4939 | 58174 199 3049 6070
24: 4616 195 2552 4964 | 57370 199 3041 6066
25: 4499 197 2604 5137 | 56155 198 3035 6015
----------------------------------------------------------------
Avr: 196 2548 4993 199 3042 6045
Tot: 197 2795 5519


--- 4.58 A2 x86 ----------------------------------------------------

G:\Programs\7z458a2>7z.exe b -mmt4

7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 6143 MB, # CPU hardware threads: 2
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 4713 195 2354 4585 | 54201 198 2815 5579
23: 4573 198 2350 4660 | 53736 199 2823 5607
24: 4296 198 2333 4619 | 53298 199 2832 5635
25: 4076 198 2347 4654 | 52419 199 2828 5615
----------------------------------------------------------------
Avr: 197 2346 4629 199 2824 5609
Tot: 198 2585 5119


--- 4.58 A2 x64 ----------------------------------------------------

G:\Programs\7z458a2-x64\product>7z.exe b -mmt4

7-Zip [64] 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 6143 MB, # CPU hardware threads: 2
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 5073 199 2478 4935 | 58398 199 3025 6011
23: 5055 198 2600 5151 | 57644 199 3025 6015
24: 4895 198 2660 5264 | 56746 198 3024 6000
25: 4659 197 2701 5319 | 56155 199 3021 6015
----------------------------------------------------------------
Avr: 198 2610 5167 199 3024 6010
Tot: 198 2817 5589

Intel P4 (HT) 3000 MHz
Dual DDR2-800
Windows XP SP2 Professional
=================================================================
7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 2047 MB, # CPU hardware threads: 2
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 1495 149 977 1455 | 13273 147 932 1367
23: 1467 147 1019 1495 | 13064 144 944 1364
24: 1438 149 1037 1546 | 12963 147 930 1371
25: 1248 141 1008 1425 | 14850 174 915 1591
----------------------------------------------------------------
Avr: 146 1010 1480 153 930 1423
Tot: 150 970 1452

=================================================================
7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 2047 MB, # CPU hardware threads: 2
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 1584 154 999 1541 | 13253 145 939 1365
23: 1558 151 1049 1588 | 13192 144 955 1377
24: 1532 152 1085 1647 | 13028 143 963 1377
25: 1499 153 1117 1712 | 12917 143 967 1384
----------------------------------------------------------------
Avr: 153 1063 1622 144 956 1376
Tot: 148 1009 1499

definitely improved over 4.58a1

Intel P35, Core2Duo 3550MHz, 2GB DDR2-1066@1066MHz


7-Zip (A) 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 2047 MB, # CPU hardware threads: 2
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 5437 157 3363 5289 | 61150 194 3248 6298
23: 5336 164 3323 5437 | 60189 194 3245 6284
24: 5288 165 3450 5686 | 59486 194 3246 6291
25: 5176 173 3422 5909 | 58368 194 3224 6254
----------------------------------------------------------------
Avr: 165 3389 5580 194 3241 6282
Tot: 179 3315 5931

---
7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 2047 MB, # CPU hardware threads: 2
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 5667 160 3453 5513 | 65119 200 3354 6707
23: 5682 162 3565 5789 | 63835 200 3332 6664
24: 5539 169 3515 5956 | 63043 200 3333 6667
25: 5429 173 3586 6199 | 62103 200 3327 6654
----------------------------------------------------------------
Avr: 166 3529 5864 200 3336 6673
Tot: 183 3433 6269

i forgot to add that C2D is E6750 (4MB L2)

AMD K6-2 CXT @4.5*112=504 MHZ, 2x128 MB SDRAM PC100 CL2 @ 112 MHZ - 4x interleave, VIA MVP3 AGP chipset with 1 MB L2 Cache, OS=W2K
---

C:\Programme\7-Zip>start /B /HIGH 7z b

C:\Programme\7-Zip>
7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 253 MB, # CPU hardware threads: 1
RAM usage: 211 MB, # Benchmark threads: 1

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 275 100 268 268 | 4039 100 416 416
23: 269 100 274 274 | 3997 100 417 417
24: 261 100 281 281 | 3942 100 417 416
----------------------------------------------------------------
Avr: 100 274 274 100 416 416
Tot: 100 345 345

C:\Programme\7-Zip>a:

A:\>start /B /HIGH 7z b

A:\>
7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 253 MB, # CPU hardware threads: 1
RAM usage: 211 MB, # Benchmark threads: 1

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 266 100 259 259 | 4226 100 435 435
23: 258 100 263 263 | 4199 100 438 438
24: 251 100 270 270 | 4130 100 436 436
----------------------------------------------------------------
Avr: 100 264 264 100 436 436
Tot: 100 350 350

A:\>

CPU: Pentium 4-M (Northwood C1) 1.80 GHz
RAM: DDR1-266 tRAS6-RP3-RtC3-CL2.5 512MB single-channel mode
OS: Windows 2000 Professional SP4

7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 510 MB, # CPU hardware threads: 1
RAM usage: 419 MB, # Benchmark threads: 1

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 776 100 755 755 | 6991 99 726 720
23: 755 100 772 769 | 6973 100 728 728
24: 722 100 778 777 | 6860 100 726 725
25: 663 95 794 757 | 6071 90 725 650
----------------------------------------------------------------
Avr: 99 775 765 97 726 706
Tot: 98 751 735

7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 510 MB, # CPU hardware threads: 1
RAM usage: 419 MB, # Benchmark threads: 1

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 795 98 789 774 | 7348 100 757 756
23: 799 100 818 814 | 7238 99 760 755
24: 768 99 830 825 | 7166 100 759 757
25: 717 98 833 819 | 7060 99 761 756
----------------------------------------------------------------
Avr: 99 817 808 100 760 756
Tot: 99 788 782

icc optimized 7z.dll:

7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 510 MB, # CPU hardware threads: 1
RAM usage: 419 MB, # Benchmark threads: 1

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 851 100 831 828 | 8327 100 857 857
23: 841 100 859 857 | 8198 99 863 855
24: 813 100 876 875 | 8147 100 864 861
25: 766 99 881 874 | 8035 99 868 860
----------------------------------------------------------------
Avr: 100 862 858 99 863 859
Tot: 100 862 858

Try also -mmt2. It can give some gain for single-thread CPUs.

os: Microsoft Windows XP Professional - Service Pack 2 (5.1.2600)
cpu: AMD Athlon(TM) XP 2400+ at 2100MHz (48% Load)
ram: 1286/3071.5MB (41.86%) [||||------]

Y:\arr>7z b -mmt1

7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 3071 MB, # CPU hardware threads: 1
RAM usage: 419 MB, # Benchmark threads: 1

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 758 87 846 737 | 14056 91 1596 1447
23: 764 92 845 779 | 14280 92 1622 1491
24: 708 93 823 762 | 13887 93 1585 1468
25: 651 91 819 744 | 14729 97 1623 1578
----------------------------------------------------------------
Avr: 91 833 755 93 1607 1496
Tot: 92 1220 1126

Y:\arr>7z b -mmt2

7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 3071 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 899 86 1019 874 | 14278 91 1610 1470
23: 860 91 959 876 | 14301 93 1611 1493
24: 809 91 954 870 | 13832 92 1583 1462
25: 763 93 940 872 | 14007 93 1608 1500
----------------------------------------------------------------
Avr: 90 968 873 92 1603 1481
Tot: 91 1286 1177

Y:\arr>

7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 510 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 798 100 777 777 | 7037 100 724 724
23: 638 99 654 650 | 2533 100 264 264
24: 530 98 579 570 | 3038 100 321 321
25: 386 99 445 441 | 3011 99 325 322
----------------------------------------------------------------
Avr: 99 614 609 100 409 408
Tot: 100 511 509

7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 510 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 809 100 789 787 | 7280 100 751 749
23: 429 99 442 437 | 2924 100 305 305
24: 453 100 489 487 | 3508 100 372 371
25: 360 99 414 411 | 3366 100 361 360
----------------------------------------------------------------
Avr: 99 533 531 100 447 446
Tot: 100 490 488

icc optimized:
7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 510 MB, # CPU hardware threads: 1
RAM usage: 425 MB, # Benchmark threads: 2

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 364 99 357 354 | 8283 100 853 853
23: 838 100 854 854 | 5186 100 543 541
24: 340 99 371 366 | 7309 99 778 773
25: 424 100 486 484 | 3327 99 360 356
----------------------------------------------------------------
Avr: 99 517 515 99 633 631
Tot: 99 575 573

ahh, it's hot... cpu is in throttling... (((

Vista Ultimate x64, SP1 Eval
Q6600 @ 3.07GHz (341x9)

C:\Program Files\7-Zip>7z b

7-Zip [64] 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 4093 MB, # CPU hardware threads: 4
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 6921 334 2018 6733 | 106066 372 2934 10917
23: 6698 357 1912 6825 | 106452 375 2958 11108
24: 6257 361 1864 6728 | 104897 376 2949 11091
25: 5710 357 1828 6520 | 101857 374 2915 10912
----------------------------------------------------------------
Avr: 352 1905 6701 374 2939 11007
Tot: 363 2422 8854

C:\Program Files\7-Zip>7z b -mmt8

7-Zip [64] 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 4093 MB, # CPU hardware threads: 4
RAM usage: 1701 MB, # Benchmark threads: 8

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 7206 376 1862 7010 | 110911 388 2938 11412
23: 6962 379 1873 7094 | 108572 385 2944 11326
24: 6120 366 1800 6581 | 104398 378 2923 11037
25: 5829 375 1775 6656 | 103939 384 2901 11134
----------------------------------------------------------------
Avr: 374 1828 6835 384 2927 11227
Tot: 379 2377 9031

C:\Program Files\7-Zip>7z b

7-Zip [64] 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 4093 MB, # CPU hardware threads: 4
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 7015 350 1950 6824 | 109898 381 2972 11312
23: 6573 350 1915 6697 | 107647 379 2967 11232
24: 6351 368 1856 6829 | 102864 368 2953 10876
25: 5766 354 1858 6583 | 103516 376 2947 11089
----------------------------------------------------------------
Avr: 355 1895 6733 376 2960 11128
Tot: 366 2427 8930

C:\Program Files\7-Zip>7z b -mmt8

7-Zip [64] 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 4093 MB, # CPU hardware threads: 4
RAM usage: 1701 MB, # Benchmark threads: 8

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 7356 381 1879 7156 | 111920 388 2966 11515
23: 6917 381 1851 7048 | 109491 386 2957 11422
24: 6303 380 1785 6777 | 107048 385 2943 11317
25: 5746 370 1772 6560 | 105881 386 2937 11342
----------------------------------------------------------------
Avr: 378 1822 6885 386 2951 11399
Tot: 382 2386 9142

System is as follows
MB: SM X7DAE
CPU: 2x5130 OCed to 2300mhz 1532FSB
RAM: 4x 512mb DDR2 667
HD:4x7200.10 320GB raid 0
OS Vista Ultimate x32

C:\Users\Jim\Desktop\7z458a2>7z b -mmt6

7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 2046 MB, # CPU hardware threads: 4
RAM usage: 1275 MB, # Benchmark threads: 6

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 7341 369 1935 7141 | 81915 396 2130 8430
23: 7152 378 1925 7287 | 80270 393 2131 8375
24: 6845 379 1940 7360 | 75680 378 2117 8001
25: 6604 383 1970 7540 | 74873 381 2103 8021
----------------------------------------------------------------
Avr: 377 1942 7332 387 2120 8207
Tot: 382 2031 7769

C:\Users\Jim\Desktop\7z458a2>

C:\Users\Jim\Desktop\7z458a2>7z b -mmt4

7-Zip 4.58 alpha 2 Copyright (c) 1999-2007 Igor Pavlov 2007-12-31

RAM size: 2046 MB, # CPU hardware threads: 4
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 6351 322 1921 6178 | 82424 396 2142 8484
23: 6154 313 2000 6270 | 80721 394 2135 8423
24: 6112 335 1961 6571 | 78963 393 2123 8349
25: 5936 344 1971 6778 | 77708 393 2117 8325
----------------------------------------------------------------
Avr: 328 1963 6449 394 2129 8395
Tot: 361 2046 7422

C:\Users\Jim\Desktop\7z458a2>

C:\Program Files\7-Zip>7z b -mmt4

7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06

RAM size: 2046 MB, # CPU hardware threads: 4
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 6131 313 1907 5964 | 82786 394 2160 8521
23: 5914 319 1888 6025 | 81429 396 2146 8497
24: 5777 332 1869 6211 | 80175 394 2150 8477
25: 5612 340 1885 6407 | 78670 395 2132 8428
----------------------------------------------------------------
Avr: 326 1887 6152 395 2147 8481
Tot: 360 2017 7316

C:\Program Files\7-Zip>

Computer has a Quad core 2.66Ghz CPU overclocked at 3.01Ghz
Actual RAM is 4 gigs dual channel but limited by Windows XP SP3 32 bits.

7-Zip 4.58 beta Copyright (c) 1999-2008 Igor Pavlov 2008-05-05

RAM size: 2495 MB, # CPU hardware threads: 4
RAM usage: 850 MB, # Benchmark threads: 4

Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS

22: 7098 307 2252 6905 | 132125 384 3105 11921
23: 6996 326 2184 7128 | 116009 352 3016 10616
24: 6770 339 2145 7279 | 119621 366 3033 11098
25: 6555 341 2193 7485 | 123004 385 3005 11567
----------------------------------------------------------------
Avr: 328 2193 7199 372 3040 11300
Tot: 350 2617 9250