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Power consumption of the 460

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July 25, 2010 10:23:50 PM

On this page http://www.tomshardware.com/reviews/geforce-gtx-460-gf1... where it shows the power consumption of the video card under load for the 1GB 460, is the 268w full system load wattage being used or just the video card? because if it's the full system load why would they need an 1100w PSU for the test?

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a c 376 U Graphics card
July 25, 2010 10:26:55 PM

That is for the full system. As for the PSU that is their standard set up. They do other reviews that include things like SLIed GTX 480s which actually do need that much power.
July 25, 2010 10:29:44 PM

jyjjy said:
That is for the full system. As for the PSU that is their standard set up. They do other reviews that include things like SLIed GTX 480s which actually do need that much power.

If that is for the full system, an i7 CPU, a high end motherboard, a higher end mid range video card and it only pulls 268w, why even make a 1000w PSU?
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a c 153 U Graphics card
July 25, 2010 10:32:48 PM

wildkitten said:
If that is for the full system, an i7 CPU, a high end motherboard, a higher end mid range video card and it only pulls 268w, why even make a 1000w PSU?


Becuase 4 GTX 480s take 1600W at full load.

People do need those large PSUs, just not people with a single mid range graphics card.
July 25, 2010 10:37:29 PM

So the 460 uses only like 50w of power? Because I thought the mobo was using well over 150w, then figure in RAM, the HD's, etc doesn't seem like the video card uses any power.
a c 376 U Graphics card
July 25, 2010 10:39:24 PM

Well, you need to keep in mind that in Furmark the GPU is stressed but the CPU isn't. When actually gaming both will be stressed and the overall power usage will be significantly higher. You can also overclock cards which can significantly increase power consumption. Then, as I mentioned earlier, you can also run more than one video card at once(SLI/crossfire), up to four cards at a time in fact. Finally there are cards which use much more power like the GTX 480 which I mentioned. When overclocked a single GTX 480 maxes out around 400w on its own.
a c 376 U Graphics card
July 25, 2010 10:41:42 PM

wildkitten said:
So the 460 uses only like 50w of power? Because I thought the mobo was using well over 150w, then figure in RAM, the HD's, etc doesn't seem like the video card uses any power.

It is the motherboard, ram and hard drives that hardly use any power. The CPU and video card(s) will be the main power draws in a system. The GTX 460 maxes out at about 150w at stock setting. When fully OCed probably around 200w.

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a b U Graphics card
July 26, 2010 2:36:51 AM
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wildkitten said:
So the 460 uses only like 50w of power? Because I thought the mobo was using well over 150w, then figure in RAM, the HD's, etc doesn't seem like the video card uses any power.
The GTX 460 uses 21W idle and 163W full load from a 90% efficient power source. So, its actual power consumption is around 19W idel and 147W full load.

You'll see an article later this week that lets you confirm that using simple math.
a b U Graphics card
July 26, 2010 2:38:03 AM

Helltech said:
Becuase 4 GTX 480s take 1600W at full load.

People do need those large PSUs, just not people with a single mid range graphics card.
No. In a couple weeks I'm going to prove that 4 GTX 480's, plus an overclocked 980X, pulls around 1000W at full GPU load.
a c 153 U Graphics card
July 26, 2010 4:01:47 AM

Crashman said:
No. In a couple weeks I'm going to prove that 4 GTX 480's, plus an overclocked 980X, pulls around 1000W at full GPU load.


What?! I'm not going against your expertise (I know you know your buisness), but what about this?

http://www.youtube.com/watch?v=vY8uppkjwL0

The system rarely goes below 1440w.
a b U Graphics card
July 26, 2010 4:53:37 AM

Helltech said:
What?! I'm not going against your expertise (I know you know your buisness), but what about this?

http://www.youtube.com/watch?v=vY8uppkjwL0

The system rarely goes below 1440w.
Tagan...what are those, 70% efficient? 1440x0.7=1008W. Of course he's running the CPU faster than I would, at 4.4 GHz, and overclocking the video cards too, and running more fans, etc etc. all accounting for "at least 8W". I also see that he's only tracking peak power consumption (instantaneous load), not maximum continuous load.
a c 153 U Graphics card
July 26, 2010 5:01:11 AM

Crashman said:
Tagan...what are those, 70% efficient? 1440x0.7=1008W. Of course he's running the CPU faster than I would, at 4.4 GHz, and overclocking the video cards too, and running more fans, etc etc. all accounting for "at least 8W". I also see that he's only tracking peak power consumption (instantaneous load), not maximum continuous load.


That makes sense, thanks for clearing it up.

Looking forward to that full analysis you're working on in the next few weeks. :D 

Also according to Tangan that PSU is 80 percent efficient.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
August 6, 2010 4:43:25 PM

Best answer selected by wildkitten.
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