Wanna know of this psu is ok

[abubakarm]

Where I'm , I have only 2 options, one is asus P-550ga, and the other is corsair 520hx. The thing is, asus p-55ga is available for about $23 less. Please recommend. I have a gtx 260.

 

[myocardia]

You'll want to buy the Corsair. Definitely.

 

[abubakarm]

But the p-55ga got three +12v rails like 520hx right? Whats the difference in performance ? corsair seems to be of good quality like there fan is less noisy, cables have this design that you can use only the ones you want and so less clutter. But what I want to ask is that isnt p-55ga offering more than what gtx 260 requires? Please see the link below:
http://www.asus.com/products.a...model=2098&modelmenu=1

 

[nomagic]

The Corsair model you mentioned is a modular PSU with auto fan control. The Asus model you mentioned, unfortunately, I do not know much about because I have not read any review about it.

You must understand that neither of the two models are true 12V tri-rail design. In both model, the 12V outputs actually share the same power source and each is limited at a capacity.

Just by reading the spec, I deduced that the Corsair model is more "capable." In both models, the 12V outputs are all capped at 18A, but the Corsair model has higher max combined wattage of 480W. The Asus model has only 360W. This means the max combined current for 12V output would be 40A for the corsair model and 30 A for the Asus model.

This 10A difference in 12V output can be significant if your rig is super power hungry and needs the extra current under load condition.

 

[abubakarm]

ok. Can you also tell me if 520hx will be able to run gtx 260 in sli, keeping in view that the other system components consist of 2 gb ram, single 200gb sata hdd, athlon 5000+ and thats all?

 

[minmaster]

i got a related question: what happens when you don't meet the recommended minimum W PSU for a video card but it still boots up and displays? is there a risk of damaging the card if under heavy load it runs out of juice and shuts down?

 

[betasub]

"Recommended minimum" is simply that: recommended, not a guarentee. Some no-name PSUs may have a high rated wattage that is above the recommended minimum, but fail to boot at all. Some quality PSUs have conservatively low ratings, but can easily run high-end card despite being below the recommended minimum.

After booting and displaying the OS successfully, a PSU can still fail under load - freezing or rebooting in borderline cases; blowing its own capacitors (and possibly taking the motherboard with it) in more serious cases. Damage to the graphics card itself is very rare, but nevertheless possible.

 

[s44]

Originally posted by: abubakarm
ok. Can you also tell me if 520hx will be able to run gtx 260 in sli

No way.

 

[nomagic]

It is better to be safe than sorry. When I build a multi-thousand-dollar rig (high end SLI graphics, RAID raptors, enthusiast MB...etc), I would make DAMN sure that I get a high wattage quality PSU.

In fact, I believe PSU is THE most important component in a enthusiast rig. You can go cheap on other components and possibly make do without incidents, but going cheap on PSUs usually ends up in disasters.

Of course, this is based on personal experience. Other people may think different.