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Will this PSU do for a 670?

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  • Power Supplies
  • Graphics Cards
  • Components
Last response: in Components
June 14, 2012 9:29:27 PM

This is my current PSU
http://www.cdsparts.com/p-3717-new-gateway-fsp450-60ep-...

And I was hoping to upgrade my graphics card from an ATi 4870 to a nvidia 670
http://www.geforce.com/hardware/desktop-gpus/geforce-gt...


I've asked around and I've got a mixed response as to whether this is possible or not.
People say it's possible, where-as others say that I have to upgrade my PSU. If I do that, I won't be able to afford the GTX 670.

I'm not planning on overclocking at all.

Is this possible or will I just break everything?

More about : psu 670

a c 159 ) Power supply
a b U Graphics card
June 15, 2012 1:03:34 AM

A GTX 670 system requires a 500W PSU with at least 36A on the 12V rails and two 75W 6-pin PCIe power connectors.

Your PSU is a 450 continuous output/500W max PSU; not one of the better PSUs that FSP makes. It is rated for 30A on the 12V rails and should have two 6-pin PCIe power connectors. Nvidia states that a 500W is required however real world testing on a system with a highly overclocked power-hungry i7 965 CPU had a full-load power draw of 279W: http://www.guru3d.com/article/geforce-gtx-670-review/8
Will your PSU work? It's is likely that it will work for your rig, however I would personally replace it with a good quality PSU ASAP....I mean eat beans and hotdogs or Ramen noodles until you have enough money saved to get a better PSU. If your current PSU works, you'll be running it at over 75% capacity at full load...40-60% is a much more reasonable load.
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a c 75 U Graphics card
a b ) Power supply
June 15, 2012 9:32:04 AM

TastyCarcass said:

People say it's possible, where-as others say that I have to upgrade my PSU. If I do that, I won't be able to afford the GTX 670.

The mixed response is probably due to the fact that FSP is not a no name brand but not a top brand either. & the fact that it powered your 4870 goes to say that it should power the 670 which theoretically have the same power draw using 2x6-pin connector. The safest of course is to protect your 670 investment & buy a new one. You can probably afford the new PSU if you sell your 4870. As an incentive, give the FSP PSU as a give away. ;) 
June 17, 2012 8:55:19 AM

PSU's lose wattage over years, unless it's a really high quality brand. Get 650w from corsair, good to go for next 7 years, hopefully.