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Replacing 8800GT with a GTX 460 - FAILURE

Last response: in Graphics & Displays
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September 24, 2010 6:25:01 PM

I was using an XFX 8800GT 512, and just replaced it with the EVGA GTX 460 768MB. Testing with Modern Warfare 2, and Age of Conan, my framerates actually dropped severely. They weren't great to begin with, but at least playable using the 8800gt, but they are actually performing much worse at the same settings, as low as 10 fps for extended periods. My method of installation was this: I uninstalled the 8800gt drivers first. Then replaced the card. Yes, both power plugs are plugged into the card. I then installed the new drivers from the EVGA support site. Tested the games, horrible results. Then I uninstalled the drivers again, and this time used Driver Sweeper. This time I installed using the drivers from the CD, as well as reinstalling DirectX for the hell of it. No difference, still horrible framerates. I tried installing the beta version of the latest drivers from the Nvidia website, and same results, mostly. For about 10-15 minutes I was getting about 30 fps on Conan after installing the beta drivers, now today it's back to about 10. Modern Warfare is still unplayable as well.

Even though motherboard and processor are pretty ancient, why would I actually be getting worse performance? Shouldn't it at least be equal or better? Everything I read about this card indicated to me that going from the 8800gt to the GTX460 was a huge impovement.

EVGA GTX460 768mb
Intel core 2 duo 6600 2.4 ghz
Intel DP965LT motherboard
4 gigs ram (3.5 usable), ddr2, unsure of the brand
Coolermaster 450w PSU
Windows 7 ultimate 32 bit
a b U Graphics card
September 24, 2010 6:31:08 PM

Update the motherboard drivers.
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a b U Graphics card
September 24, 2010 6:33:58 PM

Your power supply is questionable too for a 460. I hope your 460 isn't getting underpowered.
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September 24, 2010 6:38:45 PM

I'll try updating the motherboard drivers, thanks. I was thinking maybe the PSU but it does meet the minimum requirements according to Nvidia.
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a b U Graphics card
September 24, 2010 6:40:36 PM

Not all Coolermaster PSUs are good.If it is one of those Extreme series, then it is not very good.
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September 24, 2010 6:42:49 PM

The PSU is the RS-450-ACLX. Shows pretty great reviews on newegg at least.
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a b U Graphics card
September 24, 2010 6:46:10 PM

Even though its not the best, I don't think that it is causing the problem.
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September 24, 2010 7:48:38 PM

According to the Intel website, they've detected my motherboard drivers are complete and up to date.
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a c 272 U Graphics card
a b \ Driver
September 24, 2010 7:50:01 PM

Have you tried giving the CPU a bit of an OC to see if that speeds things up a bit?
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September 24, 2010 7:54:36 PM

I've never tried overclocking, with a cpu or gpu. Can you direct me on how to get started please?
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September 24, 2010 8:12:07 PM

Thanks for the suggestions. I keep seeing that the first thing people are seeing is either the motherboard or the PSU. I hope it's just the PSU cause that would be a quick easy fix.
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September 24, 2010 9:09:54 PM

I just noticed that while Conan is running, my CPU is going from 75% - 100% maxed out, sometimes maxed fully for a while. I'm sure thats not good. Memory usage is showing about 75-80%. I'm also getting audio clicks and glitches. I don't know if that helps or not.
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September 24, 2010 9:34:02 PM

EVGA precision shows about 30% gpu usage during gaming. Is that normal? If I did replace the PSU with a quality 600-700w, what kind of frame rates should i expect with my hardware. I'm not convinced overclocking is the fix for this.
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a c 272 U Graphics card
a b \ Driver
September 24, 2010 9:38:51 PM

If your CPU is not able to supply data to the GPU quickly enough then you will see this as a lack of framerates, try OC'ing the CPU and see what that does for your GPU usage.
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September 24, 2010 11:53:41 PM

If I were to overclock, does that end up taking any significant extra power from my psu?
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a c 272 U Graphics card
a b \ Driver
September 25, 2010 12:12:13 AM

It will take a few watts extra but nothing major.
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September 25, 2010 1:17:07 AM

Thanks I appreciate your advice. I"m going to reinstall windows, try some overclocking, and get a new psu when I get a chance. Could bottlenecking or not enough wattage explain why windows is now having overall poor performance, there's a significant delay to every word i'm typing in right now, for example. This didnt happen before I installed the card.
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