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850W or 1200W

post #1 of 11
Thread Starter 
My friend wants to upgrade his power supply, upgrading from an Antec TPQ 850W to either a Corsair AX850 or an AX1200W. The big question here is which one would be the best choice down the road?

When he buys the power supply he'll get a second GTX470. Both power supplies can manage them with an OCed i7 and a 3 drives raid 0. What i'm not certain is would the AX850 age much faster than the AX1200 since it would run nearly at its max rated output over prolonged periods of time.

He also wants to keep the power supply for at least 6 years. The unit will probably see about 2 or 3 upgrades to the latest platform (surely Intel once or twice). Considering previous CPUs power trends, would the 850W be enough for future high end CPUs and possible dual GPU setups?

EDIT: I forgot to say my friend isselling his TPQ850 in this process.
Edited by linkdiablo - 1/17/11 at 8:30pm
post #2 of 11
Why only 850 or 1200? Is 1000 bad? 1200 is really only reasonable for Tri-SLI/CFX on powerrrr hungry cards
post #3 of 11
Wait... he can run both those 470s on the existing TPQ850, heck, he could run that rig on a Corsair TX650... If he absolutely has to change, then the AX850 is plenty.
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post #4 of 11
Quote:
Originally Posted by linkdiablo View Post
My friend wants to upgrade his power supply, upgrading from an Antec TPQ 850W to either a Corsair AX850 or an AX1200W. The big question here is which one would be the best choice down the road?

When he buys the power supply he'll get a second GTX470. Both power supplies can manage them with an OCed i7 and a 3 drives raid 0. What i'm not certain is would the AX850 age much faster than the AX1200 since it would run nearly at its max rated output over prolonged periods of time.

He also wants to keep the power supply for at least 6 years. The unit will probably see about 2 or 3 upgrades to the latest platform (surely Intel once or twice). Considering previous CPUs power trends, would the 850W be enough for future high end CPUs and possible dual GPu setups?
Why does he want to upgrade his current power supply? He doesn't even need 850 watts for SLI 470s and an i7? I would recommend getting an Corsair AX750 or a SeaSonic X-750. There is no need to go with anything more powerful then that.

Quote:
Originally Posted by allikat View Post
Wait... he can run both those 470s on the existing TPQ850, heck, he could run that rig on a Corsair TX650... If he absolutely has to change, then the AX850 is plenty.
Running SLI 470s and an i7 on a 650 watt?? Wouldn't work very well if he overclocks. I wish it did because I need to upgrade my PSU to a 750 watt if I want another 470 :/
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post #5 of 11
Since he plans on keeping it that long, I would say it's worth the money to invest into a higher wattage, high quality psu.

The AX850 would be fine if he doesn't plan on using more wattage than he already is using. (maybe add another 2 or 3 hard drives, but that's about it) It would be fine for probably +5 years.
    
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post #6 of 11
Quote:
Originally Posted by Jaguarbamf View Post
Since he plans on keeping it that long, I would say it's worth the money to invest into a higher wattage, high quality psu.

The AX850 would be fine if he doesn't plan on using more wattage than he already is using. (maybe add another 2 or 3 hard drives, but that's about it) It would be fine for probably +5 years.
Wrong. You can SLI 470s on a 750 watt and have more then enough power (650 with no overclocks). A 1200 watt power supply is a complete waste of money.
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post #7 of 11
Not quite sure how to answer this. First, one gtx470 max to 220w, Oced i7 may take up to 200w depended on the voltage and speed. HDs won't draw much power. Antec TPQ 850W can pull 64a/768w on 12v so it should be fine. ax850 or ax1200 is good but 6 yrs, many things can happen so get a 1200w psu now maybe not a good idea. In general, he doesn't need a 1200w psu unless he goes for three GPUs an each may draw 250w+.
post #8 of 11
Quote:
Originally Posted by linskingdom View Post
Not quite sure how to answer this. First, one gtx470 max to 220w, Oced i7 may take up to 200w depended on the voltage and speed. HDs won't draw much power. Antec TPQ 850W can pull 64a/768w on 12v so it should be fine. ax850 or ax1200 is good but 6 yrs, many things can happen so get a 1200w psu now maybe not a good idea. In general, he doesn't need a 1200w psu unless he goes for three GPUs an each may draw 250w+.
Exactly a 750 watt power supply will work perfectly for SLI 470s and the i7. IMO stick with what he has.
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post #9 of 11
Thread Starter 
The reason he's "upgrading" his power supply is to reduce ripple. The AX1200 is way overkill we both know that, but he mentionned the HX100 and possible Triple SLI nut that has now been ruled off. He also wants the power supply to be sufficient for for whatever setup he'll have 3 or 4 years from now (I don't know how fast the capacitors age). 850W does seem perfectly fine thanks for your input.
post #10 of 11
Quote:
Originally Posted by linkdiablo View Post
The reason he's "upgrading" his power supply is to reduce ripple. The AX1200 is way overkill we both know that, but he mentionned the HX100 and possible Triple SLI nut that has now been ruled off. He also wants the power supply to be sufficient for for whatever setup he'll have 3 or 4 years from now (I don't know how fast the capacitors age). 850W does seem perfectly fine thanks for your input.
If he is thinking about three way SLI then the ABS 1050 is probably his best bet if he can get a hold of it. The AX1200 is nice but it is so expensive and that's even overkill for 3-way SLI 470s.
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