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Is my CPU bottle necking my GPU that bad? - Page 2

post #11 of 55
Thread Starter 
Those new AMD cpu's aren't coming out for a while, and pile driver is only expected to be 15% better than bulldozer, which means it will be as fast as a 2600k, but $100.00 more or so.

My switch over to intel was inevitable.
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post #12 of 55
Quote:
Originally Posted by snipekill2445 View Post

Thanks guys,
The reason i Think there is a huge bottleneck is i cant even play Skyrim on highest settings. I have to have low shadows, and no AA or AF in order to get 60fps. And yet i see people with a 2500K, and a smaller graphics card playing it easy as pie on highest settings.

You should try increasing the resolution of your games eliminate CPU bottle neck. Either that or something is wrong with your game install. I am running my 2.2 ghz Phenom and I play everything on High on skyrim and it never drips below 60 fps.
post #13 of 55
Quote:
Originally Posted by snipekill2445 View Post

Those new AMD cpu's aren't coming out for a while, and pile driver is only expected to be 15% better than bulldozer, which means it will be as fast as a 2600k, but $100.00 more or so.
My switch over to intel was inevitable.

How is it $100 more? Last time i checked the 2600k was at $330 and the 8120 was at $200. Thats $130 cheaper (assumming next-gen procs have similur priceing) and more cause you already have the mobo
Where did you get your math? Also I expect piledriver to be more then %15 better in most cases, if they take care of the pipeline problem and the latency problem then it might be theoryidicly %15 better but like %30 better in most cases. Also, windows 8 brings a %20 boost, so whats %15 + %20? alot faster then sandybridge. Ivy brings only a %5 boost to intel
post #14 of 55
Thread Starter 
Quote:
Originally Posted by SkippyDogg View Post

You should try increasing the resolution of your games eliminate CPU bottle neck

My resolution is 1920x1080, and if anything, the higher the resolution the lower the fps, so that doesn't solve anything at all. From what I've read and seen when I get a 2500K i am going to see a noticeable performance boost at higher settings.

Also, I didn't start this thread to ask whether or not I should change to intel or not. I'm switching over in April once again. I started it to ask if I had a bottleneck.
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post #15 of 55
Quote:
Originally Posted by snipekill2445 View Post

My resolution is 1920x1080, and if anything, the higher the resolution the lower the fps, so that doesn't solve anything at all. From what I've read and seen when I get a 2500K i am going to see a noticeable performance boost at higher settings.
Also, I didn't start this thread to ask whether or not I should change to intel or not. I'm switching over in April once again. I started it to ask if I had a bottleneck.

If your problem is only in Skyrim (or BF3), then I'm betting it has to do with textures taking up more then 1GB of VRAM. Probably has absolutely nothing to do with your CPU.
    
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post #16 of 55
Quote:
Originally Posted by ESP View Post

If your problem is only in Skyrim (or BF3), then I'm betting it has to do with textures taking up more then 1GB of VRAM. Probably has absolutely nothing to do with your CPU.

This +9000, been in alot of threads with people getting bad perf on those two games on 1GB cards and wondering if the rest of their rig was bad.
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post #17 of 55
Thread Starter 
No, because my friend has a 2600k, and a HD 5770 with 1gb of vram and he can play almost highest settings (4x AA, not 8) and he gets around 50-60fps average. So I think I'll get either the 2500k, or the 2600k or maybe ivy bridge when it comes out. That should improve all-round performance.
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post #18 of 55
At this point I would definitely recommend waiting for Ivy Bridge. The CPUs themselves aren't much faster than Sandy Bridge, but the chipsets come with nice upgrades like PCIe 3.0.
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post #19 of 55

For typical CPU intensive games like FSX, your CPU is very likely the bottleneck.

 

However, for typical GPU intensive games, it probably does not. Take BF3 as an example (which also works out the CPU), your Phenom II X4 840 does not appear to be a bottleneck. The CPU usage will be higher when compared to an i7 2500K. But it does not bottleneck when paired with a GTX580 (which is in the same performance category as your HD6950) at your resolution of 1920x1080 according to the review below.

 

Reference:-http://www.techspot.com/review/458-battlefield-3-performance/page7.html

 

 

The sure way to determine whether or not your CPU bottlenecks your graphics card at your resolution for a particular game is to plot a graph of game framerate (fps) vs CPU frequency (Ghz). See graph below for a hypothetical example.

Basically, the slope indicates the amount of CPU bottleneck.  If the slope is steep, the BN is large.  If the curve levels off, the BN is very small.

 

cpu scaling test one.jpg


Edited by windfire - 3/4/12 at 11:11pm
post #20 of 55
Quote:
Originally Posted by vedaire View Post

wouldn't count on am3+ going away that soon as they already stated a version of excavator is also coming for am3+
Source? Last I heard, Piledriver would be the last line to use AM3+
Quote:
Originally Posted by jrl1357 View Post

How is it $100 more? Last time i checked the 2600k was at $330 and the 8120 was at $200. Thats $130 cheaper (assumming next-gen procs have similur priceing) and more cause you already have the mobo
Where did you get your math? Also I expect piledriver to be more then %15 better in most cases, if they take care of the pipeline problem and the latency problem then it might be theoryidicly %15 better but like %30 better in most cases. Also, windows 8 brings a %20 boost, so whats %15 + %20? alot faster then sandybridge. Ivy brings only a %5 boost to intel

Wow that is the most optimistic math Ive seen yet...


OP: Have you done as suggested and used MSI Afterburner yet? You can moniter everything to see whats going on, from GPU usage to memory usage, temp, etc. You can see if your VRAM is maxxing out, or if your GPU is maxxing out. If nothing is, then you most likely have a CPU bottleneck.
Edited by mad0314 - 3/4/12 at 10:31pm
    
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