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HD 4870 issues

I bought a Sapphire HD 4870, and a 600w power supply to run it. My computer specs are: AMD Phenom 9500 2.2 ghz quad-core; 3 gb 800 mhz RAM; HD 4870 graphics card; and Vista 32-bit home premium. I can run COD4 and Half-life 2: episode 2 at 1920x 1080 resolution with all settings maxed and have virtually no fps drops.I have downloaded 8.7 catalyst drivers and the 4800 series hotfix. My problem is playing Crysis. I get about 10.7 fps average in the cpu and gpu tests. When playing the campaign in DX9 with everything in a mix of medium and high, I get about 20 fps walking slowly, about 10-15 when turning around in-game, and about 2-8 fps in combat. I have turned the anti-aliasing and vsync off in resolution 1600x1000. My gpu clock will not overclock past 500 mhz no matter what I set it to using ati overdrive. The memory clock oc's fine. I am also having trouble installing the Crysis 1.2 patch. I will greatly appreciate any help that I can get with these issues. P.S. I have an Nvidia nforce 630 graphics chipset, if that is the issue.

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resolution 1600x1000

In reply to: HD 4870 issues

Crysis will not perform well in today's hardware. You must reduce resolution and features until you can play it. Maybe in a few years you will see new machines that can run this at full glory.

Please research this to find that person that built a 20 thousand no dollar limit PC and Crysis still didn't run at top settings.

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something's wrong

In reply to: HD 4870 issues

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