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What power supply to get

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a b ) Power supply
June 5, 2010 8:16:27 AM

In the summer I am upgrading from my GTS 250 to a ATI HD 5870 2gb, the sapphire vapor-x model, and possibly setting up eyefinity, that depends on budget.

Now I have a 520 Cooler Master realpower power supply, and even though it should be enough, I think that I would really be pushing it to it's limit.

Im giving my old GTS250 to my brother, and he needs a new power supply to go with it, (currenly an old antec 350 watt PSU), so I was thinking to also give him my old power supply, and then I would have an excuse to get a new one. (otherwise I would probably have seen how it worked with 5870).

Now I think I want around 750 watts, that should be plenty, and a very good margin.

so unless you guys say that the 520 watt is really more than plenty, and I grab my brother a cheap PSU, what is your advice on what I should get.

I am buying from the netherlands, and then exporting to bahrain, getting a tax stamp at airport to cut off 19% which I payed. I've had a look at prices, and incl tax, 100 euro seems like a good budget, but plenty can be found for less.


Thanks a lot guys!

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a b ) Power supply
June 5, 2010 10:02:35 AM

configuring everything I have currently: 514 watts.
with 20% capacitor aging: 606 watts.

I have had this PSU for 1.5 yrs... How is it still operating. Must explain why it's working so hard.

With 5870: 576 watts.
with 20% capacitor aging: 681 watts.

Safe to assume I need a new PSU. 700 watts good or should I be looking at more to be safe for future upgrades?
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a b ) Power supply
June 5, 2010 11:55:35 AM

corair tx 750 or antec tp new 750 will run even dual 5870's
a b ) Power supply
June 5, 2010 12:31:34 PM

Here you have the power supply requirement for your new system:
650 Watt or greater power supply one 75W 6-pin and one 150W 8-pin PCI Express power connectors recommended (850 Watt with two 75W 6-pin and two 150W 8-pin connectors for ATI CrossFireXTM technology in dual mode)

Therefore, you should buy a new PSU to be able to run the 5870 2Gb properly. Give the CM PSU to your brother.

If you are thinking about NOT to do CF, I recommend you the following PSUs:

ANTEC Truepower NEW 650W (by Seasonic) (modular)
CORSAIR HX650 (by Seasonic) (modular)
CORSAIR TX650 (by Seasonic)
ENERMAX Liberty Eco II 620W CrossFireX (modular)
ENERMAX Pro82+ II 625W CrossFireX
THERMALTAKE Toughpower XT 675W (by CWT) (modular)
SAPPHIRE FirePsu 625W (by Enermax) (modular)
IKONIK Vulcan 650W (by CWT) (modualr)


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