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Power supply question, 2500k + gtx460

Last response: in Components
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January 15, 2011 4:00:34 PM

Hello everyone,

I am putting together a new system and I was wondering for psu I could-should use.

Here are the current specs:

i5 2500k (might overclock)
GTX 460 1gb (might overclock and eventually make it into an SLI)
8gb RAM 1600MHz.
2Tb HDD

Should I settle with, say 550W? or should I go with 600?
Do keep in mind I might get another GTX460 later on.

Thanks in advance
a b ) Power supply
January 15, 2011 4:09:45 PM

If you are going to SLI two GTX 460, then I recommend at least a 650w PSU (preferably from Seasonic)

A GTX 460 is relatively thirsty, under typical gaming conditions it consumes 141w and can probably peak above 160w. More if you overclock.



Source: http://www.xbitlabs.com/articles/video/display/nvidia-g...
January 15, 2011 4:15:41 PM

Thanks for the info.

Any thoughts on Antec TP-650? I have seen both good and some bad reviews about Antec, but Seasonic doesn´t ship to my country.

thanks
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a b ) Power supply
a b K Overclocking
January 15, 2011 8:11:23 PM

Depends on your budget, but this is one of the best
http://www.amazon.fr/Seasonic-X-650-module-Alimentation...

If you get Corsair, Seasonic, XFX you can't go too far wrong, seems like the XFX is expensive on that site.
Just remember the psu needs 4xpci-e cables for the 2 cards.
January 16, 2011 8:02:30 AM

I think I am going to get this one, much cheaper and 750W, it also says SLI rdy so it must have the 4 pci thingies.
http://www.amazon.fr/gp/product/B000X2677A/ref=ord_cart...

I have no idea what they mean by US version though... hoping it only means the power cable!

Now I just need to find me a case with an external 3,5 slot, coz it seems the motherboard has a 3,5 pannel with 2 USB3.0. It is proving to be hard!

Thanks for your help
a b ) Power supply
a b K Overclocking
January 16, 2011 10:41:59 AM

Yes it has 4 and is a very good psu.

The case just needs a spare 3.5" bay, like the floppy drive bay, most cases have them.

Whats your buget for a case, these are all good depending on what you can spend and what you like.

HAF912+/HAF932/HAF-X
Antec300/902/1200
Corsair 600T or wait for 650D / 700D/ 800D
Silverstone RV02/FT02
January 16, 2011 11:10:36 AM

I'm perplexed. The chart says GPU usage with a 460 is only 141W. A 2500k will only use about 80W max. Adding another 460 will equal 362W. Adding motherboard and peripheral power usage will add up to 450W max.

Why would you need 750W or even a 600W PSU? With the trend for energy efficiency through smaller fabrication, power usage should drop in the medium term for both CPUs and GPUs.

(I'm saying this in part due to not wanting to spend so much on a new PSU myself and making the case for getting a sub 500W PSU). You could save money and upgrade another component of your system and still have a good PSU.
a b ) Power supply
a b K Overclocking
January 16, 2011 11:32:30 AM

Because the power you are talking about needs to be supplied on the 12v rails not the total power.
If you are talking about needing 450w + 150w on the 3.3v and 5v thats a minimum of 600w to start with.

Also if you look around half the time the more powerfull units are the same if not cheaper than the lower powered ones so it makes sense to buy the more powerfull units and give yourself some breathing room.

http://www.guru3d.com/article/geforce-gtx-460-review/13
January 18, 2011 8:00:11 AM

I found this one which is a bit more adequate I think.

http://www.corsair.com/tx650w.html

Thing is, it says SLI-certified, but it also says PCI-E Connector 2.

Could I go SLI with that psu?

As for the case, I decided to take Antec three hundred.
January 18, 2011 8:13:10 AM

Thanks for the detailed list!
a b ) Power supply
a b K Overclocking
January 18, 2011 10:50:42 AM

pepenlor said:
I found this one which is a bit more adequate I think.

http://www.corsair.com/tx650w.html

Thing is, it says SLI-certified, but it also says PCI-E Connector 2.

Could I go SLI with that psu?

As for the case, I decided to take Antec three hundred.



NO, it only has 2xpcie, stick with the other one you listed.

It says SLI certified because not all cards need 2xpci-e each.
January 19, 2011 9:34:49 AM

Best answer selected by pepenlor.
!