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8800GTS card and my PSU


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Hello,

A non-CM related but technical question, if you don't mind. I currently have an Athlon 64 3700+ CPU and 2GB Ram with a 7900GS video card and also an Antec 450W PSU with a 32A (15A+17A) rating on the 12V railings.

I am looking at purchasing an eVGA 8800GTS 320MB video card for my system, but was wondering if it is worth it and could my PSU easily handle the new card at peak loads. The specs for the 8800GTS card says that a 450W PSU with a minimum of 26A on the 12V railings is required.

My 450W PSU specs:

+3.3V +5V +12V1 +12V2 +5V SB -12V

Max. Load 32.0A* 30A* 15A* 17A 2.0A 0.3A

Min. Load 0.5A 0.5A 0.4A 0.4A 0A 0A

Load Reg. ±5% ±5% ±5% 5% ±5% ±5%

Ripple V(p-p) 50mV 50mV 120mV 120mV 50mV 120mV

* +5V, +12V1, 12V2 and +3.3V maximum output: 410 Watts max

* +5V and +3.3V combined output: 150Watts

* +5V, +12V1, 12V2 and +3.3V maximum output: 410 Watts max

* +5V and +3.3V combined output: 150Watts

1) Can my current PSU handle the 8800GTS with no issues? Or should I consider purchasing a more powerful PSU?

2) With my current specs, is it worth upgrading from a 7900GS to a 8800GTS with still a 3700+ CPU?

I have no desire to go Vista now or in the medium term future so I am not interested in the 8800GTS for DirectX 10 support, just faster performance.

Many thanks for any and all replies.

[ August 17, 2007, 12:48 PM: Message edited by: Wally's World ]

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I've 8800GTS 640mb-pretty good card-if you

can get a hold 8800GTS 320mb OC'd type-it's

worth the money-450PSW will work good...

Stay away from Vista for as least year or

2-still buggy drivers and doesn't work well

with CM-Nvidia Fog tables....

AMD64 3700-of possible get AMD-4400 DC there

getting cheap....But 3700 still good....

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I don't think that PSU works out. The Smartpower is significantly less quality that the Truepower.

And your 15A+17A don't just add up. One of them, probably the 17A is connected to the CPU, where it gives you 204 watts where you don't need them. The 15A is then powering everything else that uses 12V, including motherboard, all PCI cards and the video card. That's 180 watts with mumble quality PSU and I think that might be tight.

Socket 939 is the good case, as you can plug in single-cores up to 2.8 GHz and duals up to ... forgot. But good CPUs and they are pretty cheap now.

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