Intel TXT just require a standard TPM module compliant to TCG TPM 1.2 spec in the system. If it is a recent Intel vPro system, then usually it supports TXT.
From: Matthew Podhorniak [mailto:firstname.lastname@example.org]
Sent: Thursday, June 14, 2012 8:35 PM
Subject: [tboot-devel] Intel TXT
I am looking into using tboot on a laptop I have, in a testing environment. When reading about tboot I see it utilizes something called Intel TXT, is this something only available to machines who have a TPM manufactured by Intel?