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CPU Bottleneck and Video Cards

post #1 of 4
Thread Starter 
I apologize if this has been discussed before and I wasn't sure exactly were to put this topic but I had a question........

Which CPU's from both Intel/AMD are the bare minimum needed to use a card like the 4870X2 and run Crysis and not have lag because of the CPU. Would a Lima from AMD be ok and a Intel Celeron DC be ok as well?

I know GTA4 is the only game that uses more than one core (3)


I am not worried about future proof
Edited by dlee7283 - 12/16/08 at 10:52am
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post #2 of 4
Its not so much which CPU, its more or less the clock speed honestly. Any dual core at roughly 2.4+GHz should do just fine and will not bottleneck any current gen (single) card. You will obviously get higher framerates with a higher clock speed. But the difference is really minimal. Even my dated Socket 939 AMD setup is capable of maxing Crysis out at my resolution (or will be once I get my other 8800GT).
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post #3 of 4
Quote:
Originally Posted by pioneerisloud View Post
Its not so much which CPU, its more or less the clock speed honestly. Any dual core at roughly 2.4+GHz should do just fine and will not bottleneck any current gen (single) card. You will obviously get higher framerates with a higher clock speed. But the difference is really minimal. Even my dated Socket 939 AMD setup is capable of maxing Crysis out at my resolution (or will be once I get my other 8800GT).
not really, my eah4870 is being heavily bottlenecked by my amd 4600+ (wich runs at 2.4)

Where people run far cry 2 at avarage 60 fps on 1024 / 1280 with super high (not ultra)

Mine has arround 40fps with drops down to 20 at tense fights. this with newest drivers 1280 x 1024 & same settings. I had to lower my shadow settings to see a good increase.

I'm pretty sure these new games would run alot better if i had a new cpu that runs with 2.8 / 3.0 or higher. Maybe the cpu isen't directly bottlenecking my gpu. But I advice anyone to consider their purache twice since a new CPU could sometimes makes your experience alot more better then a new gpu. (thats if you don't have a high clock speed cpu already)
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post #4 of 4
CPU bottlenecking is entirely situation-dependent, thus, your question cannot really be answered as posed.

Try to run the aquamark 3 benchmark at default settings (1024x768, 4xAF, and like 5 years old) using a 4870x2 and you'd most likely see cpu bottlenecking occurring even if you had an i7 quad overclocked to 10GHz.

Try running Crysis on very high, at 2560 res, with 8xAA, and you probably wouldn't see cpu bottlenecking even if you were running your 4870x2 on an old 939 socket like a A64 3800x2.

Bottom-line, CPU's, unless they are REAL old or REAL low-end, will not affect the playable settings you'll be able to smoothly run your games at. CPU mostly affects benchmark scores by increasing the MAX framerates you are able to achieve (and thus raises the average, which dictates the bench score), but upgrading your CPU rarely raises your MIN framerates, which is what mostly dictates your maximum in-game playable settings.
Edited by brettjv - 12/16/08 at 5:40pm
    
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