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How much power?

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - How much power?

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plote_45   03-03-2009 at 10:37:45 AM

i currently building a new computer and i don't how much power it needed
here my pc spec

http://www.mwave.com.au/newAU/mwav [...] DY3HMF1XXW

i have chosen a 750W power supply because i want crossfire it later on

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mi1ez   03-03-2009 at 10:53:46 AM
- 0 +

Looks about right to me.

Reply to mi1ez
abhijith   03-03-2009 at 10:53:57 AM
- 0 +

Yes the 750W will be more than enough.

Reply to abhijith
leo2kp   03-03-2009 at 04:09:50 PM
- 0 +

+1

------------------------------ "He is no fool who gives what he cannot keep to gain what he cannot lose" -- Jim Elliott
 Reply to leo2kp
plote_45   03-04-2009 at 06:19:28 AM
- 0 +

what about a 650 power supply?

Reply to plote_45
jaguarskx   03-04-2009 at 06:30:37 AM
- 0 +

You can easily get by with a good 500w PSU with at least 32amps on the 12v rails for that setup.

------------------------------ Q9450 |Corsair XMS 4GB DDR 800 | ABit IP35 Pro | HD 5850 | Audigy 2 | Seasonic S12 550 | Cooler Master Centurion 532 | NEC LCD2690WUXi and Planar PX2611w | WinXP

Peace on Earth by means of the destruction of all life on Earth.
 Reply to jaguarskx
Silver CPUs badge JohnnyLucky   03-04-2009 at 06:45:17 AM
- 0 +

A single 4870 video card uses 152 watts and 13 amps at full load.

Two 4870 video cards in CrossFire mode use 295 watts and 25 amps at full load.

Here is a link to a power supply calculator:

http://web.aanet.com.au/SnooP/psucalc.php

Just fill in as many of the blanks as possible. The result will be for the entire system. Please bear in mind that the wattage will be overestimated because there are a lot of low quality power supplies that uninformed consumers insist on buying. As jaguarskx pointed out, an excellent high quality, stable, reliable 500 watt psu with adequate amperage is sufficient for your system.


Message edited by JohnnyLucky on 03-04-2009 at 06:48:34 AM
Reply to JohnnyLucky
jaguarskx   03-04-2009 at 07:38:20 AM
- 0 +

I generally recommend PSU sold by Seasonic, Corsair (HX and TX series), and PC Power & Cooling.

Basically Seasonic manufacturers those PSUs (especially those sold under its own brand name).

------------------------------ Q9450 |Corsair XMS 4GB DDR 800 | ABit IP35 Pro | HD 5850 | Audigy 2 | Seasonic S12 550 | Cooler Master Centurion 532 | NEC LCD2690WUXi and Planar PX2611w | WinXP

Peace on Earth by means of the destruction of all life on Earth.
 Reply to jaguarskx
plote_45   03-06-2009 at 04:31:28 AM
- 0 +

anyway i get another question,should i get 4850x2 or 1GB 4870

Reply to plote_45
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