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Best card for 450 watt psu

Last response: in Graphics & Displays
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June 12, 2012 2:02:28 PM

Hello,
My wife's computer has a 450 watt psu, I was wondering if anyone knowns if there is a good GPU that can run on this. I want to help her boost the performance for WoW but dont want to buy a new PSU if there is a good card that can run on the one she has. The rest of the stats are a 3.4 quad-care CPU and 8g of ram

More about : card 450 watt psu

June 12, 2012 2:03:20 PM

The card she is running now is a Radeon HD 6570
June 12, 2012 2:19:29 PM

How much do you want to spend - and not all psu makers are the same - give more psu details - like who makes it and which model.
-Bruce
Edit:HD7770 would be a good upgrade
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June 12, 2012 2:20:32 PM

How many amps on 12v does the PSU supply?

You can use Wiki and go down the list of graphic cards to find the power consumption of each model.

The CPU and GPU will draw all their power on the 12v rail.

What model CPU do you have?
June 12, 2012 2:24:57 PM

Im not sure what the brand of PSU it is, I bought it at Best buy, this is before I knew anything about computers. I would never go to there now lol. I do know her CPU is AMD Phenom II X4 965 Black Edition Deneb 3.4GHz (125w)
a b Ý World of Warcraft
June 12, 2012 2:30:54 PM

The newer 28nm based graphics cards are more efficient, and draw less power.
Look for one of them first.

The 7750 would certainly run on your psu.

If the psu is of decent quality, the 7770 should run, even though amd suggests a 500w psu. Their recommendations account for the possibility of junk quality psu's.

On the Intel side, the GT640 would run, and be comparable to the 7750.

a b Ý World of Warcraft
June 12, 2012 2:52:07 PM

plough said:
Im not sure what the brand of PSU it is, I bought it at Best buy, this is before I knew anything about computers. I would never go to there now lol. I do know her CPU is AMD Phenom II X4 965 Black Edition Deneb 3.4GHz (125w)


Look at the data plate on the psu to identify it. You should also see the amps available on the +12v rails.

In a simpler way, see if it has a 6 pin pci-e power cable.
If it does, then it should be able to power any discrete card that requires just one such connector, like the 7770.

If it does not have such a lead, then you are restricted to cards that are powered entirely by the pci-e slot.
Like the 7750.

Any stronger graphics card needing two 6 pin connectors will require a psu change to support it.
June 12, 2012 2:54:00 PM



I'll second that recommendation on the sapphire card. however, although OEM companies generally don't put int very quality PSUs, I have yet to hear about a 7770 failing to run on a 450W PSU. it really just barely needs that extra 6pin. worse case you can undervolt it slightly in CCC and it should run on your existing PSU.
June 13, 2012 10:51:39 AM

Its a dynex 450w PSU. I have read that they are not good. i might just end up buying a new PSU and GPU for her. I dont think a Dynex 450w will power much
a b Ý World of Warcraft
June 13, 2012 11:59:26 PM

If it will fit and you have a 6pin connector avail. it will power a HD6850.
!