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PSU and GPU question

post #1 of 16
Thread Starter 
I am planning to buy a new video card.

I am looking at the EVGA NVIDIA GeForce GT 240 512 mb DDR5 PCIe 2.0.
I read that it needs a PSU with 12V@18A.

This is my PSU:
Thermaltake TR2 430w
http://www.newegg.com/Product/Produc...82E16817153023

I see this:
Output: +3.3V@20A, +5V@24A, +12V1@14A, +12V2@15A, -12V@0.3A, +5VSB@2A

You can check the Newegg page for more specs.


I am just wondering if this card would work. If it does, would it not be at its full potential?

Thanks
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Katana.V1
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post #2 of 16
I'm sure that PSU would be able to that GPU without any problems
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post #3 of 16
430 watts is plenty of power for that card.The question is how much can your psu do?Even if it can do 300 then you will be all set.
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post #4 of 16
Will be fine.
post #5 of 16
Thread Starter 
So I assume the 12V@18A doesn't matter then?
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post #6 of 16
Thread Starter 
I'm still not sure, I heard from someone that if the rails are different on the PSU and the GPU then the GPU will not run at the max.
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post #7 of 16
According to xbitlabs, Palit's GT 240 max current draw isn't even 4A for itself from the +12V rail:
http://www.xbitlabs.com/articles/vid...b_4.html#sect0

That PSU will be quite enough
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post #8 of 16
That PSU is fine. From what I can gather, it is a dual 12V rail model, with one rail giving 14A and the other 15A. That means that the total amperage output of one rail (if ONLY one rail is being utilized) is 29A. That dual 12V rail means that you just wont be able to run a SLI rig. But I imagine that this is out of the scope of this thread.

But in short, its more than enough. And also how some posters previously said, it wont draw 14A from the rails. I would be willing to bet somewhere between 8 and 12.
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post #9 of 16
Quote:
Originally Posted by shinigamibob View Post
That PSU is fine. From what I can gather, it is a dual 12V rail model, with one rail giving 14A and the other 15A. That means that the total amperage output of one rail (if ONLY one rail is being utilized) is 29A. That dual 12V rail means that you just wont be able to run a SLI rig. But I imagine that this is out of the scope of this thread.

But in short, its more than enough. And also how some posters previously said, it wont draw 14A from the rails. I would be willing to bet somewhere between 8 and 12.
Total amperage is not quite 29A if this PSU were to be treated as a single +12V rail unit. It's more like 25A at best. You don't just simply add those amperage values together.

According to THIS, the total combined wattage for the +5V and +3.3V is 130W, leaving supposedly 300W combined wattage for the 12V lines. 300W/12V = 25A. Take into account the lost of efficiency and all, it can be a bit less than that.

Regardless, the point is the PSU is more than adequate. Apologies if this is going off-topic.
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post #10 of 16
TR2 is the weakest psu in Thermaltake. For the TR2 430w W0070, you are lucky if you can get 20a/240w from 12v. GTS240 max is around 70w and Athlon 64 X2 stock at 65w so it works in this case.
Edited by linskingdom - 12/31/10 at 7:09pm
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