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600W not enough for HD4870X2?

post #1 of 7
Thread Starter 
Well guys, here's the deal. I've been running my PSU (NZXT PP-600) with my HD4850 forever. I bought them together wayy back in 2008.

Recently, however, my friend gave me his broken HD4870X2 (turns out it was just extremely dusty and the thermal paste was baked on) he said if I could fix it, it was mine. Lo and behold I fix it.

Now, though, after only 30min of gaming or so, my system will either hang or shut off completely, leading me to think it's my PSU. Natively my PSU has a 6 and 8 pin PCIe, the minimum required by the HD4870X2.

My CPU is heavily overclocked, my RAM gobbles up power, one HDD, 9 USB devices, two DVD drives, three cathodes, 9 fans and one sound card later... I think I'm maxing out my PSU.

Would you guys agree? If so, what kind of PSU should I be looking at?

Thanks for reading, helpful posts will be repped.
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"The Big Kahuna"
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post #2 of 7
I ran a 4870x2 for while. It runs very hot, very loud, and gobbles up wattage like no ones business.

You should be okay. Try putting the 6 pin on one rail and the 8 pin on the second rail.
    
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post #3 of 7
600W is not enough for sure - get at least 700W of good PSU.
This is from the ATI official site:
Quote:
650 Watt or greater power supply with one 2x3-pin PCIe® power connector and one 2x4-pin PCIe® power connector is required (1K Watt with two 2x3-pin and two 2x4-pin connectors for ATI CrossFireX™ technology in dual mode)
So i would suggest 750W corsair. Something like this:
http://www.newegg.com/Product/Produc...-006-_-Product

P.S. Here is a review on the card: http://www.techpowerup.com/reviews/S...870_X2/24.html
And in this case it draws 385W you could say 400W for all, so i think you are maxing your PSU - with so many devices.
Edited by Vipervlv - 1/11/11 at 12:32am
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post #4 of 7
That PSU SHOULDN'T have a problem running that Manufacturer specs always overdo power requirements to cover their butts, but yeah, it sounds like it might be going out, or there isn't enough wattage on the 12v rail(s).
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post #5 of 7
Thread Starter 
Yeah this kinda just reinforces what I thought was going on. It's only got two 12V rails, and the PCIe connectors are together (I sleeved the PSU Nov. 2009). It's two years old, and even new probably would struggle with what I put it through.

Thanks guys, a good 700W+ should fix my problem.
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post #6 of 7
I ran my old 4870x2 on my Thermaltake 700w toughpower and was just enough to power my entire rig. 600 watts with everything you have just mentioned won't cut it.
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post #7 of 7
A good 600 should be enough that particular 600 you got just cant deliver its rating
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