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Can a 400w corsair power supply cope with upgrades?

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August 20, 2010 5:36:13 PM

Hi, im a first time builder (and a newcomer on these forums so sorry if this is the wrong part of the forum) and have a quick question about the power supply i hope to buy.

I hope to buy a 400w corsair cx power supply to power these components:

Amd athlon x2 250 3ghz
2gb kingston/corsair etc ram
MSI 760gm-E51 motherboard
500gb western digital hdd
ati 4770 (preferrably a 1gb version)
and of course and optical drive

Now i understand that a good 400w power supply such as a corsair can power these components, but as this is a quick budget build, i may in the future be upgrading. However as i am not an avid gamer it will be very unlikely that the graphics card will be updated, and i may just be upgrading with a new cpu (and ram but ram i understand does not use much power). As i said i am new to this and so it may be a stupid question and cpus may not use much power either, but i would just like to make sure. The cpu i would be upgrading to would be a phenom x4 965 just so that you know.

P.S can someone please confirm/ state and alternative for my motherboard if they do not think it is suitable ( i am not interested in high overclocks)

Sorry that it is a bit long-winded and hope forward to the replys.

Thanks.
a c 144 ) Power supply
August 20, 2010 5:46:31 PM

I don't have any experience with modern AMD CPU's so I cannot judge the suitability of your motherboard with an X4-965.

But your PSU will be adequate for about any upgrade except a second video card.
a b ) Power supply
August 20, 2010 5:46:58 PM

The corsair 400w will work fine if it has the connection lead for the 4770; can't recall if it needs it. It's about 30 amps on a single 12v rail.
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August 20, 2010 5:51:27 PM

With that configuration you need 21.50 amps on the 12v rails. You actually have 30 amps.

With the 965, you need 25.50 amps, you have 30 amps.
a c 144 ) Power supply
August 20, 2010 5:52:09 PM

o1die, the 400CX has 1 PCIe power plug.
a b ) Power supply
August 20, 2010 5:52:41 PM

Yes your PSU can handle the upgrade with no problem but, I would not even look at a quad core if I was upgrading get the x6 1055 or 1090 I checked your boards support and it is on the list.
August 20, 2010 6:34:08 PM

oh ok thanks very much for the reply
August 20, 2010 6:34:57 PM

jsc said:
I don't have any experience with modern AMD CPU's so I cannot judge the suitability of your motherboard with an X4-965.

But your PSU will be adequate for about any upgrade except a second video card.



ok nice thanks for replying
August 20, 2010 6:36:25 PM

evongugg said:
With that configuration you need 21.50 amps on the 12v rails. You actually have 30 amps.

With the 965, you need 25.50 amps, you have 30 amps.


Thanks thats good to know, i dont understand about amps and rails on a power supply so thats really helpful thanks.
August 20, 2010 6:43:01 PM

With the x6 1090, you still need 25.50 amps, you have 30 amps.
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