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Originally Posted by ubuntu83

Hi this my first post here. I think this the appropriate place for my query. I apologize if it's not. So let's come to the point. I want to play some PS2 games on my PC specially Tekken 4 and 5. Here are my PC's specs.

AMD Athlon X2 4200+ processor (AM2, Windsor)
HIS ATI Radeon X1650 Pro IceQ 512MB
Asus M2N-E Motherboard (Nforce 570 Ultra Chipset)
2X1GB DDR2 667Mhz Kingston ValueRAM
160GB+80GB SATAII H.D
Windows Vista Ultimate x64

OMG you want to run tekken5 with that config. If you are extremely patient then you can otherwise not.
my specs are somewhat similar to yours but still faster and I get 30fps at normal setting, 35 on frame skip and 40 at VU skip. But with that I can't even see half of the moves that I do in the game.
best is to use internal resolution =512x512
disable every thing else in GSdx
enable all the cpu options in the cpu config
use your ISO copy of the dvd.
but there is no difference in PAL or NTSC version
the game will be as slow on PAL as it is slow in NTSC.