SSE 4.2 on which processors?

[md_intel]

On which all processors are SSE 4.2 instructions available? (In particular, is it available on 45nm Core 2 Duos?)

TIA,
-MD.

[TimP]

Some samples which your search engine should have turned up:
http://arstechnica.com/articles/paedia/cpu/what-you-need-to-know-about-nehalem.ars/3
http://www.reghardware.co.uk/2008/03/18/intel_sse_4_text_tweaks/

[md_intel]

Thanks Tim. Am I right in assuming that:

• The code name for the current 45nm processors is Penryn
• That of the next generation 45nm processors is Nehalem
• SSE 4.2 is available only on Nehalem and not on Penryn

Thanks,
-MD.

[Quoc-Thai_L_Intel]

Hi,
You are correct with your assumings. Here are some details:
"Intel Streaming SIMD Extensions 4 (SSE4) introduces 54 new instructions in Intel 64 processors made from 45 nm process technology.
47 of the SSE4 instructions are available in 45 nm Intel processors based on the successor of Intel CoreTM microarchitecture (code named Penryn). This subset of 47 SSE4 instruction is referred to as SSE4.1 in this document.
SSE4.1 and seven other new SSE4 instructions are supported in 45 nm Intel processors based on a new microarchitecture (code named Nehalem). The subset of the 7 new SSE4 instructions available to Intel processors based on the Nehalem microarchitecture is referred to as SSE4.2 in this document."
Cheers,
-Thai