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Enough power?

post #1 of 7
Thread Starter 
Does my PSU have enough wattage to run a 6990 + 5870? 5850? Maybe even 2 5850's? I can't find how much it takes to run 2 different cards anywhere so...yeah.

Thanks!
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post #2 of 7
Your good with what u got. No need to spend for another one xfire though would most likely require an upgrade at least for the 6990. Nice card by the way
post #3 of 7
Thread Starter 
What about a GTX 460?
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post #4 of 7
Well, if what u have is good for your 6990 than a 460 will be fine but if your asking what u need to run a 460. U would be good with a 550w. I like going a little above to be safe
post #5 of 7
A quality 500W can hold up to two 5850's and more.
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post #6 of 7
Quote:
Originally Posted by MusicalPulse View Post
Does my PSU have enough wattage to run a 6990 + 5870? 5850? Maybe even 2 5850's? I can't find how much it takes to run 2 different cards anywhere so...yeah.

Thanks!
You can run a 6990 + 5870 barely, if we combine the highest peak of both working it might reach 872 watts at full throttle in extreme BIOS mode. I would go with one 5850 in a safer zone and defintely not two 5850's with it at all. Having some head room on a PSU is very important. Don't want to run your PSU past 80%-85% of it's total power consumption long lengths of time.

When "Ripple" happens at full load, "Ripple" is your computers worst enemy. It's a slow gradation of your computer components which slowly over time will wear out and shorten all your parts faster than it's normal life expectancy. Anything from PSU, CPU, RAM, Motherboard, and GPU will suffer from it.

Always play it safe and leave that head room from passing 80%-85% power consumption is my rule of thumb.

The 6990 during a 3D Mark 11 Benchmark can reach up to 556 watts usage in extremem BIOS mode.


An AMD 5870 on the left hand side of the screen PSU power consumption reached 306 watts highest usage. (By no means am I comparing it the the GTX 295, just a reference to the PSU)


To be honest with your 25" monitor you don't need more than the AMD 6990 in my opinion. That's a strong card.
     
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post #7 of 7
Well... my system surpass 600 Watts when the HD 6990 overclocked to 1000MHz Core/6000MHz GDDR5. But I don't overclock the CPU. It's already near the ceiling because my PSU only provide 624 Watts in 12 V rail.
Why would you use HD 6990 and 5870 by the way?
I just don't get it.
You can't CrossFireX it.
GTX 460 might be okay for PhysX and your PSU can provide enough power.
The story might change if you overclock Both your CPU & GPU.
    
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