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Overclocking the GTX 460

post #1 of 7
Thread Starter 
So Newegg had a ridiculous Black Friday deal, selling a factory overclocked PNY GTX 460 1 GB for about $150 (765 MHz). I got the card and loaded it in. Recently, I saw an article on Tom's Hardware about a factory overclocked EVGA model that had performance comparable to a GTX 470. Intrigued, I loaded up some NVIDIA overclocking tools and got to work to match the FTW edition. Success!



Tested it in FurMark and Half-Life 2 so far (I know, old game). Next up will likely be Metro 2033. I have a few questions:

1. I read a few posts on here about overclocking but didn't really see any images on what artifacts will look like. I assumed it would be strange lines going across the screen. Are they any more subtle?

2. Right now I'm running on an OCZ ModXStream Pro 500W PSU. It's not really a top-of-the line model, and the wattage is a little low. I'm considering getting the SeaSonic 80 Plus Gold 650W model at some point. In the meantime, I'm wondering: would the lesser power supply affect my overclock that much? Should I bump it up to keep things nice?

3. I'll probably want PhysX when I run Metro 2033. Will I need a dedicated PhysX card or could the overclocked GTX 460 handle the load? 1920x1080 resolution.
post #2 of 7
1. Artifacts can be anything from multicolored lines, white/black dots (called snow), and black patches. You can check for errors in an overclocked with OCCT's GPU testing utility.

2. Depends on your system. It helps to add the specifics of your system in sig. Anyway, the power supply is probably not limited your OC. It would have to be pretty crappy PSU to affect game performance.

3. With Metro 2033, depends on what settings you're using (medium-high, no AA), but you will most definitely need a dedicated PhysX card. GT240's or 9600GT/9800s are popular PhysX cards.

P.S. - Try to push your overclock further!
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post #3 of 7
Thread Starter 
Out of town right now. Gonna upgrade the PSU to 650W and add a dedicated GT 240 once I get back. I'll also try to push the OC a little more, get up to 875 or 900 MHz. Will also be checking stability with OCCT GPU.

Thanks!
post #4 of 7
as prices of gpu's from older generations has been falling lately, spend 50 bucks to grab a 9800gt and above as a physx card, unless you already have one. i saw 9800gtx's for 50
    
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post #5 of 7
Thread Starter 
Maybe I was looking the wrong places, but I couldn't find a 9800 GT for that cheap. I mostly saw at least $80, most often around $100, and the GT 240 I got was only $40 after rebate.
post #6 of 7
Thread Starter 
Necroed my CPU thread so I thought I'd update this one, too.

Tried to push the OC a little further. At first I just tested in FurMark and didn't see problems until after 900 MHz and thought "woohoo!". Then I loaded OCCT GPU and did error checking and errors popped up like crazy. After that I started only using OCCT (and Crysis) for stability testing.

Ultimately I used 1.062 V and got 870/1740/4000 out of it. I started at 900 and just went down until it passed a 2-hour OCCT test at 1.062 V (didn't want to go over that).

For general use I'm going to try undervolting less than 1 V at stock GTX 460 speeds. This amuses me a little, as it will mean that I won't ever be running this card at the frequencies it was shipped at.

Also got a GT 240 for $40. I was a little miffed because a $50 deal for a GTS 250 popped up like the day after, but whatever. That's what happens sometimes. I'm still going to have trouble running Metro, though. I may just end up waiting to play that game until my next general hardware upgrade and busy myself with less-intensive DX11 gaming until then.
post #7 of 7
Quote:
Originally Posted by lonewolf371 View Post
Necroed my CPU thread so I thought I'd update this one, too.

Tried to push the OC a little further. At first I just tested in FurMark and didn't see problems until after 900 MHz and thought "woohoo!". Then I loaded OCCT GPU and did error checking and errors popped up like crazy. After that I started only using OCCT (and Crysis) for stability testing.

Ultimately I used 1.062 V and got 870/1740/4000 out of it. I started at 900 and just went down until it passed a 2-hour OCCT test at 1.062 V (didn't want to go over that).

For general use I'm going to try undervolting less than 1 V at stock GTX 460 speeds. This amuses me a little, as it will mean that I won't ever be running this card at the frequencies it was shipped at.

Also got a GT 240 for $40. I was a little miffed because a $50 deal for a GTS 250 popped up like the day after, but whatever. That's what happens sometimes. I'm still going to have trouble running Metro, though. I may just end up waiting to play that game until my next general hardware upgrade and busy myself with less-intensive DX11 gaming until then.
Too bad you bought from PNY, IIRC they don't do much binning. To edit the voltages for 2D (browsing, videos, etc) apps, you can use a nifty tool called Nibitor (from TechPowerUp) to change the minimum voltage. It'll be useful for cutting back those last few watts. Also, Metro 2033 is one of the most system-intensive games, so your little GTX 460 is going to struggle at 1080p . Enjoy!
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