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Can 1000w support a trifire 6950 setup? - Page 3

post #21 of 40
Quote:
Originally Posted by Ocnewb View Post
1000W can easily power 3x 6950. The OCZ ZX 1000W i'm selling atm was powering 4x 5870s all OC'ed.
Proves my point further, since the 5870 draws more than a 6950 does.
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post #22 of 40
Get a high-quality 850W. Your best bet would probably be the Corsair AX850. Great efficiency, quiet, modular, almost non-existant ripple, and can easily provide over 1000W with 80Plus Bronze efficiency and very little ripple (if you ever need it).


Quote:
Originally Posted by amdcpu4life View Post
2000Mhz
I run mine at 2800 MHz 24/7. OC the crap out of it to remove bottleneck.
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post #23 of 40
Quote:
Originally Posted by pioneerisloud View Post
Proves my point further, since the 5870 draws more than a 6950 does.
using phaedrus's power supply calculator 900w is suggested for my sig rig

ezveedub hit 1500w with 2x 6990s

http://www.overclock.net/amd-ati/106...l#post14289453

i wouldnt dare run 3x 6970s on my power supply, and trust me i wish i could so i didnt have to buy a new power supply but i dont want to damage anything
Edited by Blindsay - 8/9/11 at 7:46pm
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post #24 of 40
Quote:
Originally Posted by Blindsay View Post
using phaedrus's power supply calculator 900w is suggested for my sig rig
The AX850 easily overloads well above 1000W.
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post #25 of 40
Thread Starter 
Quote:
Originally Posted by Blostorm View Post
Tri-fire with AMD

Nice bottleneck.
I would def upgrade my CPU (ivy/sandy/bulldozer), ram and Mobo, probobly even before crossfiring. No way My 955 and ddr2 800 could handle those!


Quote:
Originally Posted by Ocnewb View Post
1000W can easily power 3x 6950. The OCZ ZX 1000W i'm selling atm was powering 4x 5870s all OC'ed.
Ok cool, I will check i out! I am not sure of the reliablility of OCZ PSUs, I can vouch for their SSDs though .

Quote:
Originally Posted by Usario View Post
Get a high-quality 850W. Your best bet would probably be the Corsair AX850. Great efficiency, quiet, modular, almost non-existant ripple, and can easily provide over 1000W with 80Plus Bronze efficiency and very little ripple (if you ever need it).
Quote:
Originally Posted by Usario View Post
The AX850 easily overloads well above 1000W.
I assume it is very bad to overload a PSU like that for long periods?? Why would they only brand it as an 850 if it can handle over 1000?
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post #26 of 40
Quote:
Originally Posted by Shadow_Foxx View Post
I assume it is very bad to overload a PSU like that for long periods?? Why would they only brand it as an 850 if it can handle over 1000?
Because part of their marketing is an 80Plus Gold rating (I think that's 90% efficiency?) and if they advertised it as a 1000W PSU it'd only get a Bronze rating.

Did you know that the Corsair AX1200 and the Thermaltake ToughPower 1500W on the inside are 100% identical, but the AX1200 is only rated for 1200W because anything more than that would reduce it to an 80Plus Silver/Bronze PSU? I'm pretty certain the AX1200 can handle a 1600W load while staying well within ATX spec.
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post #27 of 40
Quote:
Originally Posted by Usario View Post
Because part of their marketing is an 80Plus Gold rating (I think that's 90% efficiency?) and if they advertised it as a 1000W PSU it'd only get a Bronze rating.

Did you know that the Corsair AX1200 and the Thermaltake ToughPower 1500W on the inside are 100% identical, but the AX1200 is only rated for 1200W because anything more than that would reduce it to an 80Plus Silver/Bronze PSU? I'm pretty certain the AX1200 can handle a 1600W load while staying well within ATX spec.
That's incorrect, the AX1200 is the only unit on the market using that particular design. You're thinking of the Corsair HX1000 and a number of other PSUs from various companies including the ToughPower 1500W that do share the same design (CWT PUC).

As for the original question, yes, a 850W would be fine for that, although contrary to most of the recommendations in this topic, I would recommend against the Corsair AX850 on account that it only has four PCIe connections, and you will need six for a trio of 6950s.
Edited by Shub - 8/10/11 at 6:24am
post #28 of 40
Quote:
Originally Posted by amdcpu4life View Post
2000Mhz
You can easily OC that to 2.6-3.0 just up the CPU-NB voltage. You will notice a good performance increase....
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OCZ Vertex 2 50GB 640GB WD Black/500GB WD Samsung DVD Burner x24 Windows 7 Ultimate x64 3x Samsung SyncMaster E2320x Eyefinity - 6048x1080 
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post #29 of 40
perhaps someone can explain it to me (not trying to be rude but i want to understand) how when i use phaedrus's calculator in the other thread i come up with 850w - 900w for my system but he is ok running 3 6950s on the same wattage as me?
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Server/Gaming Rig
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post #30 of 40
Quote:
Originally Posted by pioneerisloud View Post
Try a lot less. They're at most 200-220w when overclocked. A GTX580 at stock pulls 217w full load. I doubt a 6950 draws near that kind of power. The GTX480 draws 275w at stock, again, I doubt the 6950 is that close in power consumption.
the man is right, a good branded 850w unit will suffice
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Overclock.net › Forums › Components › Power Supplies › Can 1000w support a trifire 6950 setup?