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MATX UD4 limiting my sli 4602. Should I........

post #1 of 12
Thread Starter 
Hi

Basically this is my first build, and when building my rig I made a few mistakes which are only causing problems now.

The main thing is that I bought the MATX P55 UD4, without realising that it was a micro atx. I had a 5850 to acompany it and therefore didnt really think too much into what that would mean for crossfire/sli down the line.

Ive since upgraded to sli 460 hawks, and the top car gets 15C hotter than the bottom, which doesnt cause any great concern.

The thing is that they wont overclock to 900mhz in this configuration. When ever the top card hits 70C they crash. The bottom card remains below 60C.

Now Ive tested both cards by themselves to see if I was unlucky enough to get a bad overclocker but nope, they both sit happily at 910MHZ using +100mv /or 1.087v (ive used both afterburner 2.0 and 1.61 in testing).

I even got 950mhz out of one ( I only tested one at this level ) using voltage beyond that allowed in afterburner by editing version 2.0 to allow the onboard voltage regulator to be raised after maxing the msi chip at +100mv

Now its really annoying me that I cant run them as I would like. I think I can run them at 850/860 in this config, but thers really no point, its either 900 or stock for me.

Now is it worth me selling my board for one with better pcie spacing? Will the overclock mentioned provide me with a noticable performance increase?

Im a little shy to do it as im really happy with the board, it really it excellent in every other way.

So what do you guys think I could sell/trade this board for? I cant use the marketplace yet tho. Are there any good value, quality alternatives that would suit my needs?

All answers appriciated

Any comments appriciated
    
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post #2 of 12
Thread Starter 
bump
    
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post #3 of 12
Thread Starter 
Anyone?
    
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post #4 of 12
your power supply look like it can't support a sli setup that well maybe if you had a 700w then you could overclock your gpus
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post #5 of 12
Thread Starter 
Really? Do you think thats whats limiting the overclock? I was pretty sure it was a quality Psu

Im pretty sure its the heat thats the limiting factor
Edited by Juliancahillane - 3/2/11 at 7:06am
    
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post #6 of 12
Thread Starter 
bUMP
    
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post #7 of 12
ur PSU is kinda weak.
don't go too far with the overclock
anyway i'm in the exact same situation right now. oh well at least when i got this mATX board it was free with cpu purchase in dec 09 so oh well. but the next time i build computer it's definitely ATX with at least 2 spaces between PCI-E slots.
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post #8 of 12
1. Please do not bump more than once per 24 hours...

2. His power supply is plenty for 2 x GTX460's

3. Your motherboard in and of itself would not limit overclocking on video cards. To your point, the temperatures might be a factor though.
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post #9 of 12
Thread Starter 
Aaah sorry. Thanks

So would it be worth me getting rid of my ud4 for a normal atx, is the 900 mhz oc going to be noticable?

Can you recommend me an alternative?
    
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post #10 of 12
If you want a P55 chipset (kind of a requirement given that you are doing SLI and the H55/Q57 boards typically don't support it), go with the Asus Asus P7P55D PRO.

It supports SLI and Crossfire and provides excellent spacing.
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