Can a 550W OCZ fatal take on a 470 fermi rig
- Thread starter Bane
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Dont know actually, I got an OCZ 550Watt too and this is my rig;
- Sapphire HD 4870 1GB DDR5
- AMD Phenom X3 555 3.2 Ghz (or something)
- 2GB RAM
- about 5 120mm fans with blue led and 1x200mm blue led fan.
- Sapphire HD 4870 1GB DDR5
- AMD Phenom X3 555 3.2 Ghz (or something)
- 2GB RAM
- about 5 120mm fans with blue led and 1x200mm blue led fan.
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- Oct 25, 2010
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- 12
It should be able too, Though I would highly not recommend it. If you stress test with prime and furmark at the same time your PSU could fail, even at constant 50-60% load its still a bit of stress.
Check the amps on the 12v rail. Plus you won't get much overclocking headroom, and more than likely your 12v rail would be unstable.
Check the amps on the 12v rail. Plus you won't get much overclocking headroom, and more than likely your 12v rail would be unstable.
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That power supply is SLI Ready, not Certified. This could mean that both PCI-e connectors are on the same rail, since Certified requires that PCI-e connectors are each on their own rails.
Since the 12v rails on that PSU provide 25amps and the total 12v wattage is 450W, that means 37.5amps if you are plugging one connector per rail, or a total of 18.75amp if they are both on the same (is that right? Someone double check, plz).
EVGA says "Requirements
Minimum of a 550 Watt power supply.
(Minimum recommended power supply with +12 Volt current rating of 38 Amps.)
Two available 6-pin PCI-E power dongles" regarding their 470 offering.
I used these links to research this question:
http://www.evga.com/products/moreInfo.asp?pn=012-P3-1475-AR&family=GeForce 400 Series Family (EVGAs 470 page)
http://www.fatal1ty.com/power-supply-unit/ocz-fatal1ty-professional-series-power-supply-550w (OCZs PSU page)
http://www.jonnyguru.com/forums/showthread.php?t=3990 (Thread regarding PSUs by jonnyguru)
http://www.tomshardware.com/forum/289705-33-will-support-fermi-worthwhile (Similar discussion thread from Tom's Hardware)
Since the 12v rails on that PSU provide 25amps and the total 12v wattage is 450W, that means 37.5amps if you are plugging one connector per rail, or a total of 18.75amp if they are both on the same (is that right? Someone double check, plz).
EVGA says "Requirements
Minimum of a 550 Watt power supply.
(Minimum recommended power supply with +12 Volt current rating of 38 Amps.)
Two available 6-pin PCI-E power dongles" regarding their 470 offering.
I used these links to research this question:
http://www.evga.com/products/moreInfo.asp?pn=012-P3-1475-AR&family=GeForce 400 Series Family (EVGAs 470 page)
http://www.fatal1ty.com/power-supply-unit/ocz-fatal1ty-professional-series-power-supply-550w (OCZs PSU page)
http://www.jonnyguru.com/forums/showthread.php?t=3990 (Thread regarding PSUs by jonnyguru)
http://www.tomshardware.com/forum/289705-33-will-support-fermi-worthwhile (Similar discussion thread from Tom's Hardware)
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He's only going to be running one 470 off it. So he's good, although it wouldn't hurt to get a better PSU.
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I'm gonna click around and check this out to make sure, but I made that post with the idea in my head that the 470 requires two 6 pin connectors, not one, per card.
That and I'm trying to go by amperage to determine compatibility, not the recommended wattage of the PSU (I don't understand why they use that).
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OK, for now, I'm going with, "No\I wouldn't attempt".
From what I can tell, the PSU is .5amps low in 12v (for the EVGA 470 example) which "may" cause problems.
Furthermore, I'm not sure how it would handle, say, a second 470. For the first, you can plug in the only two available PCI-e connectors. Add a second and you will need TWO adapters that go from 2 Molex connectors down to one PCI-e 6 pin connector. That means you can use no more than 1 Molex connector from the power supply for other peripherals (an IDE based optical drive, for instance) in order to power the second card. Whether or not they will we be getting the necessary amperage in this configuration is currently (no pun intended) over my head as I'm still learning about PSUs myself.
From what I can tell, the PSU is .5amps low in 12v (for the EVGA 470 example) which "may" cause problems.
Furthermore, I'm not sure how it would handle, say, a second 470. For the first, you can plug in the only two available PCI-e connectors. Add a second and you will need TWO adapters that go from 2 Molex connectors down to one PCI-e 6 pin connector. That means you can use no more than 1 Molex connector from the power supply for other peripherals (an IDE based optical drive, for instance) in order to power the second card. Whether or not they will we be getting the necessary amperage in this configuration is currently (no pun intended) over my head as I'm still learning about PSUs myself.
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That rig would run fine on a (quality) 400w PSU.
since the fatality 550 is of average quality, It should do well.
The Fatality 550w has OCP, so even if your system were to draw more than 550w (there is no way that it can), the PSU would just shut down before anything bad happened (and if it does shut down, then you know you need better PSU)
since the fatality 550 is of average quality, It should do well.
The Fatality 550w has OCP, so even if your system were to draw more than 550w (there is no way that it can), the PSU would just shut down before anything bad happened (and if it does shut down, then you know you need better PSU)
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