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What's my bottleneck

Last response: in Systems
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December 10, 2010 1:29:12 PM

- 8GB DDR3 1600 RAM
- 2xRadeon 5750 1GB GPU in Xfire
- Seagate Barracuda 7200 RPM 500GB
- AMD Phenom II X3 720 2.8 GHz
- OCZ 700W PSU

Title says it all. I want to do a little upgrade and want to know what to upgrade first. I would be willing to bet it's my CPU, but wasn't sure. I haven't OCed my CPU mainly due to being concerned about messing something up (never OCed before). I do have a 120mm aftermarket cooler on it and my CPU temps remain pretty low (would have to check on temps at home). My bottom GPU does run about 8 degress warmer than my upper one, but they are both fairly cool also.

Thoughts? Is it my CPU and if so, if I OCed the one I have, would I see substantial gains or should I just spring for a new one? What temps should I look out for when OCing?

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a b B Homebuilt system
a b à CPUs
December 10, 2010 2:03:37 PM

here's teh thing to check: 1) runs a game and turn the graphics down a couple notches. If FPS improves, your GPU is a bottleneck. If not, CPU is a bottleneck.


given you have 5750s in crossfire, and a 2.8 GHz processor, Its POSSIBLE that it's both. a 5750 is a pretty low-end item, and the 5xxx didn't have great scalability.

I'd say try to overclock the 720 to 3.5-3.8 GHz (and see if it's 4th core can unlock) -- what's your motherboard? then get a single HD 6870, as that's better than the 5750 crossfire.
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December 13, 2010 1:38:44 PM

Best answer selected by bamslang.
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December 13, 2010 1:39:18 PM

Thanks for the reply. I'll try it out. Not sure what my mobo is right off the top of my head.
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