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Is my Corsair HX520 enough? - Page 2

post #11 of 15
Please listen to prava and not morbein or bradley. A 650W PSU is enough to power almost any DUAL GPU set up in existence. To suggest that for a low powered single GPU like a 560 is ridiculous.

Your powersupply won't even feel what you're doing to it. I have some analogies but this is a family friendly board so I won't use them.

To give you a little feel for personal testing, using a kill-a-watts monitor, my i7-2600k OC'd to 5GHz running Prime eats about 270Watts (and I have to use a ridiculous amount of volts), running furmark on top of Prime on my Hd 69502GB nets me about 375Watts, from the wall.

So, to recap, running the two most stressful programs on GPU/CPU on more powerful CPU/GPU setup than yours would still run easily on your PSU.

If you're curious about Rails phaedrus (he's like the go to guy around here) wrote up a guide about them, it can be a bit technical in a way, but you were curious:

http://www.overclock.net/power-suppl...explained.html

As for amps, well that's just electrical talk for current. If you're not familiar with current, well, you're gonna have to do some reading up on electricity.
Edited by ocpokey - 4/19/11 at 3:58pm
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post #12 of 15
Thread Starter 
Thanks for all the replies guys, really appreciated.

I am probably gonna try and stick with what I have now to keep costs down, although, worst case scenario speaking, what would/could happen if the PSU wasn't powerful enough?
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post #13 of 15
The PSU would shut off from over-current protection.

This is the system power consumption of an overclocked GTX 560 Ti with an i7 920 @ 3.8 GHz



As you can see, a high quality HX520 can easily power your rig.
post #14 of 15
Quote:
Originally Posted by MorbEIn View Post
in theory, that PSU can power up your system, but you'll be pushing it especially with the overclocks. I suggest get a better high wattage PSU, that way you'll have more headroom in the future and well, you can also go SLi without worrying about the PSU ^_^
No.

The HX520 is more than enough for a single GTX 560 rig. Even with heavy CPU/GPU overclocks he isn't pushing the limits.
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post #15 of 15
You'll be totally fine.

The HX520 is very good, and can draw quite a bit more power than the stated 520W if it needs to (see some reviews).

I ran my overclocked i7 920 and a GTX480 for a while (before I downgraded, too inefficient a card for my liking), and it was perfectly fine, never got close to the limits of the PSU.

People often overestimate power requirements for systems. As long as you have a good quality reasonable wattage PSU (like the one you have), then generally you only need to start considering an upgrade if you're running two graphics cards.

Also, people get confused with the stated power draws for systems in tests. If it's drawing 500W from the wall, it's only going to be providing something like 400-450W to the system (due to inefficiency). The stated 520W is the power able to be provided to the components, not that taken from the wall (I think), so when looking at reviews stating power draw take this into account.
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