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CPU Bottleneck

post #1 of 11
Thread Starter 
Hi!

I just got my GTX 580, replacing my old HD4870.
BUT I have a Intel E8500, which was one of the best dual CPU's when I bought my computer.
I have testet my rig in 3DMark Vantage and I got a GPU score at 22011, which is good, but the card is definately bottlenecked by my CPU, which got a score at 7357..

BTW, I'm sorry if I am posting this at the wrong category forum.

So what I wanted to ask you is:
- Should I overclock my CPU more?
- Should i upgrade my MB + CPU + RAM + CPU fan (This will cost a LOT of money)

Any other suggestions about how I can make my card perform better?
I can play Crysis 2 on EXTREME on Singleplayer with 30-60 (Mostly 60, it is "locked" there), but it is lagging a bit on multiplayer, something that's annoying me.

AND why is there people getting 60000CPU score on vantage!?
I know people with one of the best i7 and they don't get near that number.
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post #2 of 11
60k CPU score is probably people who didn't disable PhysX.

You can't get rid of a CPU bottleneck other than either clocking it up higher or getting a better CPU. :\\
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post #3 of 11
If you're already running your dual core CPU at 4ghz, and you're still experiencing bottlenecking. Sounds like you better be prepared to either downgrade your graphics card, or put a load of cash aside for an almost entirely new system.

B option is so much more exciting, and less depressing.
post #4 of 11
Quote:
Originally Posted by Bradeno View Post
If you're already running your dual core CPU at 4ghz, and you're still experiencing bottlenecking. Sounds like you better be prepared to either downgrade your graphics card, or put a load of cash aside for an almost entirely new system.

B option is so much more exciting, and less depressing.
^ This.
But don't worry.
When you upgrade, you'll be so happy it'll make the hole in your pocket irrelevant. (has experience)
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post #5 of 11
I got my E8400 stable @ 4.18Ghz. You have a much better Mobo than I used. I bet you could get that chip around 4.3Ghz. Not sure if that would make a difference or not though. That would be a 452FSB. My 800Mhz RAM is stable there, so you shouldn't have a problem really as far as RAM. I know the P5Q can handle 452FSB easily, even on a Quad. Hell, if you had 1066Mhz RAM, you might be able to go higher, like 4.4-4.5Ghz.

What games do you play? What was your time frame for a major upgrade? Is it possible to return your GPU for 100% return or would you have to sell it? (I wouldn't sell it if you have to take a loss just because your CPU bottlenecks it. That doesn't make sense.) A 580 will still be a very capable card in a few years. If you do upgrade by then, you can get your full use out of it at that time.

Did you see any improvement during games, going from the 4870 to the 580? If so, that would make it pointless to downgrade also.
Edited by Blacklac - 3/30/11 at 9:33am
    
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post #6 of 11
Thread Starter 
Thanks for all the responses!
Downgrading is not one of my options, I don't want to sell or return it.
Yes, I did have a major improvement in games, As I said I have 30-60 FPS (mostly 60, that's where the V-Sync locks it, so it is top FPS) on Crysis 2 (on EXTREME, best graphic possible, and my resolution is 1920x1200). Something my HD4870 whould definately not have.
Also now I can run Battlefield BC2with AAx32, on my HD4870 I could not run it with any AA.
The same thing happened to JC2 (Which is a great game!)
So it was worth it!
But I'm not getting all the power I could, but i think my hd4870 was about 12000 Graphics score, maybe more or less? I forgot.
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post #7 of 11
Synthetic benchmarks don't really matter. Vantage is fully multithreaded, and probably less than 10% of games actually can take advantage of 4+ threads. I think you have a pretty decent gaming rig setup, and you shouldn't run in to too much trouble running actual games.
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post #8 of 11
It seems people misunderstand what a bottleneck is or don't understand how powerful their CPU is.

Your CPU is in NO WAY bottlenecking your GTX 580. Even at 3ghz it would not bottleneck the GPU.

Get a GPU usage application (either GPU Shark or whatever you can find) and play your game. Check the usage on the application and if you are getting max FPS (do not turn Vertical sync on, you can if you want though) with high GPU usage then you are not bottlenecked.

It is impossible, pretty much, to be bottlenecked anymore with high clocked processors such as yours. High clocked meaning 3ghz+ and a dual core.
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post #9 of 11
Quote:
Originally Posted by Phantom123 View Post
It seems people misunderstand what a bottleneck is or don't understand how powerful their CPU is.

Your CPU is in NO WAY bottlenecking your GTX 580. Even at 3ghz it would not bottleneck the GPU.
You're wrong, to get full potential from GTX 580, a 4 cores CPu is required, at minimum of 3.2GHz speed. GTX 580 is a very powerful card. I had the same thing with my old Athlon X2 6000+ and Radeon 4870. People says "no it can't be bottlenecking by your CPU" cause I have about 9k in Vantage and almost the same FPS in every game as with my old 2900XT. I have changed my CPU to Phenom II X4 920, and that was a difference. So please...
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post #10 of 11
It really depends alot on the program/game too. You can't say "you need X cores not to bottleneck Y card" because it also depends entirely on what you are running. The GPU doesn't get directly provided for by the cores. The program does, which in turn works the GPU, so it depends on that too. For stuff that needs two cores, having four will do little to nothing (assuming all else being equal, of course). For stuff that needs four, with a dual core, you'd be bottlenecked regardless of what video card you have anyway. So, it's not to the be all end all in core count.
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