SSE 4.1/2 support.

[Franpa]

Hi, I know PCSX2 detects if the processor supports these instruction sets, but does it take advantage of them? is there any noticeable difference performance wise with and without them?

[rama]

Pcsx2 and GSdx both can use SSE4.1 currently. There's a small speedup due to this.
SSE4.2 is useless for us, so it doesn't help.

[Bositman]

Yes it does. Mainly used in higher clamping modes, but it's not a major speedup.

[Franpa]

Okay thank you

[The Warrior]

PCSX2 Team Only Made Plugins for Those Instructions Set Which are Very Useful to it.