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PSU advice needed

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August 12, 2009 10:21:48 AM

Hey all, just wondering if a corsair HX 520W provide enough juice to run this build:

Core 2 Duo E8500
GIGABYTE GA-X48-DQ6 LGA 775
Mushkin 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066
POWERCOLOR PCS+ HD4890
Western Digital Caviar Black WD6401AALS 640GB
1 optical drive


I was initially looking at getting the 620W version, but if the extra 100W isn't necessary then id love to save a few $$. Im not wanting to add another vid card anytime soon, i'd just like to OC the CPU slightly.

Cheers

More about : psu advice needed

a b ) Power supply
August 12, 2009 10:38:48 AM

It's fine. Don't worry.
Related resources
August 12, 2009 11:45:00 AM

Cheers guys. I should've also stated im a sucker for modular :D 

Though that one you linked is giving me something to think about
August 12, 2009 12:00:52 PM

If you go on mod websites where those guys show pics of their systems, a lot of them use non-modular power supplies. It's an art and its very doable to make it look nice. I used to always be a modular stickler but got over it when I had purchased the Corsair 750 watt psu.

There's controversy about the extra connections when you go modular interfering with your voltage continuity.

Get the 650 and save yourself some money and test your skills. ;) 
a b ) Power supply
August 12, 2009 3:23:48 PM

The HX520 is plenty of power for a quad & any single high-end GPU; you'll be fine.
August 13, 2009 3:39:34 AM

For 10 bucks less for the 650, it makes no sense to buy the 520. Why not get the extra head room? Do as you want, the 520 should run it but I don't see why you would shortchange yourself when it cost more to do so. Why not eliminate the IF's?
August 13, 2009 7:17:16 AM

HX620 if you can afford it .
Otherwise this is great .

I am using personally a GTX285 with this on quad 2.9 12mb. with 1tb.

Even your PSU is great for that setup.

Corsair makes some heavy ***.
a b ) Power supply
August 13, 2009 8:44:40 AM

englandr753 said:
For 10 bucks less for the 650, it makes no sense to buy the 520. Why not get the extra head room?

It does if you want modular. The extra headroom really makes no difference. If you want to run 2 GPUs the 650 doesn't have enough connectors.

Quote:
Do as you want, the 520 should run it but I don't see why you would shortchange yourself when it cost more to do so. Why not eliminate the IF's?

The 520 WILL run it.
a c 144 ) Power supply
August 13, 2009 9:59:16 AM

The thing to ask yourself is, "If I buy the TX650, what will I have left over from the power supply after I build my system?"

In your case, it looks like 2 cables with molex connectors and possibly 1 SATA power cable, depending on your case.

I have a GTX260 in an Antec 900 case for one of my computers. PSU is a TX750. I had one molex cable and two PCI-e power cables unused. I tied the cables down on the bottom of the case under the lower drive housing. With the side panel on, you can barely tell.

And anyway for the same price, I would rather have the reserve power capacity. Even if unused, the PSU will run cooler.

On the other hand, it is great to have a choice. :) 
a c 105 ) Power supply
August 13, 2009 1:35:13 PM

The Antec TruePower New PSUs are semi-modular. Some common cables are fixed, but the others are modular. They are also 80+ Bronze certified.
Here's the 550W model. It has the connectors you need, and is only $80:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
If you think you might want to run two high-end video cards some day, the 650W model, with two pairs of PCIE cables, is $95:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
...and the 750W model is only $5 more: http://www.newegg.com/Product/Product.aspx?Item=N82E168...

August 13, 2009 2:08:59 PM

theAnimal said:

The 520 WILL run it.


Some high end video cards require a 500 watt psu. It will likely run it fine but as jsc noted your psu will run cooler not running at its top end. I had 3 8800GTX ACS3 video cards in SLI, the cards themselves were hot enough to warrant a fan in the room to keep from sweating but my Corsair 1000 watt psu was throwing some heavy heat out as well.

Now that I went to 1 EVGA GTX 275 the fan is gone from the room and its actually cool. Largely in part due to the video card running much cooler but the psu is barely warm as well. Night and day difference.

If you want to run your psu at the top end and deal with the heat then go for it. It makes better sense to go with a higher capacity psu and run cooler. There are other modular options out there if you need a cheaper option.

The 520 should work ok but it will be hotter than the 620 I can assure you...
a b ) Power supply
August 13, 2009 2:15:06 PM

I suggest you go with 520W because even if you go with 620W, it will not be able to sustain 2 x 4890. So save some money now and when you will add another 4890, you will have to change the PSU anyway.
August 13, 2009 2:24:24 PM

hefox said:
I suggest you go with 520W because even if you go with 620W, it will not be able to sustain 2 x 4890. So save some money now and when you will add another 4890, you will have to change the PSU anyway.


Save money? The 620 is 10 bucks cheaper than the 520 after rebate. That didn't make sense.

If you want the 520 then go for it. It should work fine. As I stated, it will run hotter than the 620 so if heat is no issue to you then go for it...
August 13, 2009 2:28:35 PM

Being that I'm not allowed to edit my message, here's another post:

The 650, not the 620 is 10 bucks cheaper...
August 13, 2009 2:33:15 PM

What's up with not being able to edit messages?

I was trying to add to hefox, if you were referring to saving money vs the 620 then you are correct. I was originally talking about the 650...
a b ) Power supply
August 13, 2009 2:35:36 PM

520 is $30 cheaper. :) 
August 13, 2009 2:50:29 PM

520 is 89.99
620 is 119.99
650 is 79.99 after 20 rebate

Both 520 and 620 modular, we know. The 650 was suggested for better value...
a b ) Power supply
August 13, 2009 5:21:51 PM

englandr753 said:
Some high end video cards require a 500 watt psu.

No single GPU requires a 500W PSU. HD4890 only uses ~130W. Even GTX280 is only ~180W.
August 13, 2009 5:44:52 PM

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

450 watt required on one above.


http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The one above requires a 500 watt for a single gpu.

I know they alone use less than 500 watts but as a whole system they require a 500 watt for your hardware configuration and the single gpu.

In essence you will need a 500 watt to run the last card I gave the link to and there are others like it.

The dual gpu cards require a 650 watt psu.
a b ) Power supply
August 13, 2009 5:52:26 PM

^That's what ATI/nVidia say. Actual power draw for any single GPU doesn't reach 222W under load. The Wattage recommendation is just that, a recommendation and not a requirement. One should worry more about rail stability, amps, voltage regulation,etc than wattage. Remember W = A*V. So by knowing the amps one can calculate wattage.
a c 105 ) Power supply
August 13, 2009 11:41:48 PM

You can have your cake and eat it too if you buy a TruePower New. You get enough amperage for Crossfire, enough connectors (4), modular cables, and it is 80+ bronze. At $95 for 650W, (or $100 for 750W), that's a hard deal to pass up.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
!