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Originally Posted by runawayprisoner

If you're trying to run Tekken 5, then sorry to say that it's insanely hard to get to fullspeed in that game. Enabling speed hacks is a good step, but you should also enable frameskip and VUSkip if possible. I haven't checked out the latest builds to see how far we have gotten, but from what I can gather, since a bunch of stuffs got fixed, things have actually slowed down instead over the past couple of months.

And to top it off, you're using a HD4850, which has been reported to offload quite an amount of processing load to the CPU. How much it does is dependent on the game, and I didn't test Tekken 5, but I can quite say that even with a quad-core processor, it's noticeably slower than any nVidia card past the 9600GT when it comes to PCSX2. Try updating to the latest Catalyst drivers and see if that helps.

RAP the VU skip option and frame skip options have been merged and made into only one Frame skip option but it does not help much when it comes to games as they get even choppier.
As far as tekken5 is concerned the VU cycle stealing hack and the idle loop hack make the game run at near to full speed at 2.3GHz and if the cpu is overclocked at 2.7GHz the speed gets to full speed. This is the result on AMD cpu while on windows 7 DX10 platform.