Sign in with
Sign up | Sign in
Your question

HD6950 2GB and my power supply

Last response: in Components
Share
December 28, 2011 2:21:06 AM

Hey guys,

I'm kind of skeptical about how well my power supply will handle my HD6950. I have an old Raidmax RX-580F.
Details of the power supply can be found:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

It is 580W max which is enough but I'm uncertain about the current.. it is an older power supply from like 2006 lol.
a c 274 ) Power supply
December 28, 2011 2:26:17 AM

I'd fork out for a new unit.
Do you have a budget!
m
0
l
December 28, 2011 2:28:21 AM

davcon said:
I'd fork out for a new unit.
Do you have a budget!


Hm can you explain to me why this isn't sufficient? I know I look at the 12V current, but what exactly am I like looking for? lol

Also, what power supply would you recommend getting? a 550W one?
m
0
l
Related resources
a c 274 ) Power supply
December 28, 2011 2:40:38 AM

By all means,try it out,personally if i bought a nice new gpu i'd drop $80 or less on a better unit.
m
0
l
December 28, 2011 2:54:16 AM

During a game of Crysis 2 I measured the maximum consumption for the whole computer, but it was only 252W. This game was most energy-intensive than any other 3d games. My pc is i5 2500K at 3.3GHz(not OC), MB H61, 2x4 DDR3, Sapphire 6950 1gb, hdd WD 300GB + 150GB, DVDRW Pionner and Fortron 700W 80 gold.
I think your PSU is enough to handle with your PC.
m
0
l
December 28, 2011 3:08:31 AM

But I don't think my power supply will supply enough current at 12V
m
0
l
a b ) Power supply
December 28, 2011 3:35:52 AM

I had a PS go bad on me. Replaced it with a coolmax 650 with 38amps on the 12v rail.......... 6950 2gig/6core/4gig, etc....... but this runs XP and the card is swapped in for testing. So far so good but I like to run something with more amperage for stability and honestly a little cooler running. The harder they work the hotter they get. you might get away with it for a while. Games played@1920x1200...... FarCry2-NFS Shift 1&2-Crysis-HardReset demo and a slew of older Quake based games.
m
0
l
a c 144 ) Power supply
December 28, 2011 3:42:34 AM

A 6950 needs about 12 amps peaking to 15 amps under load. If you have an OC'd quad core CPU, that's another 10 amps.

Your PSU is rated at 34 amps (typical for a 500 watt PSU) on paper, but Raidmax PSU's tend to be overrated.

I think your PSU can handle the card, but I don't think you will have much reserve left over.

One of my systems has an OC'd Q9550, 4 GB RAM, a GTX260 - a card with similar power requirements to yours, a Gigabyte EP45-UD3P motherboard, 3 hard drives and an optical, and a Soundblaster card all powered by a Corsair TX750.

Running 3 instances of Prime95 to load the CPU and 3DMark06 to load the GPU, it pulls 375 watts from the wall as measured by my Kill-a-Watt meter. Figuring 80% PSU efficiency, the system pulls 300 watts from the PSU.
m
0
l
December 28, 2011 4:10:15 AM

That's good to hear. I'm running a stock quad core. I guess i'll just test it out on this power supply for now.
m
0
l
!