250 power supply for GTX 750

[just saiyan]

I was watching a vid on youtube of a guy running a gtx 750 TI on a 220 watt powersupply,but the requirement says 300 watts is this safe because i was thinking of buying a gtx750 to put on my slimline desktop.

[[AU] Tabris:DarkPeace]

Some PSUs are under rated.

E.g. Seasonic 750 can do nealy 1000 watts at load for up to a minute at a time.

[AbedsBrother]

TabrisDarkPeace eredeti hozzászólása:

Some PSUs are under rated.

E.g. Seasonic 750 can do nealy 1000 watts at load for up to a minute at a time.

That may be, but ultimately you should stick to what it says on the labels. The alternative is a burned out power supply (or worse).

The requirement says 300W. That is what you should have.

[_I_]

labeled wattage isnt everything

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=187
label says 78a on 12v rails, but it pukes at over 46a on them

[AbedsBrother]

_I_ eredeti hozzászólása:

labeled wattage isnt everything

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=187
label says 78a on 12v rails, but it pukes at over 46a on them

In that case, the power supply did not do what it was marketed to do. That is a ton of warranty claims and lawsuits.

Completely different from short-cutting on system requirements when attempting to install a GPU upgrade.

It's irresponsible to propose ignoring the recommended manufacturer specifications / requirements. Following that kind of advice is how to void warranties and damage equipment - or worse, if a component catches fire.

[_I_]

if its a low power build and a good quality underrated 250w psu, a gtx750 will run just fine

* low power, apu or pentium g/i3 under 50w
and 1hdd/ssd and not many accessories or usb devices

[AbedsBrother]

_I_ eredeti hozzászólása:

if its a low power build and a good quality underrated 250w psu, a gtx750 will run just fine

* low power, apu or pentium g/i3 under 50w
and 1hdd/ssd and not many accessories or usb devices

So long as you're willing to guarantee that such an upgrade won't harm the OP's hardware / components, or potentially put his environment at risk, I guess that makes it okay. #sarcasm

Seriously, _|_, we've disagreed on a lot of things in the past, but this is ridiculous.

[_I_]

min recomended is just that, recomended
you can run it on a lower psu if the build is very low power

recomended is to be able to run the specific hardware on a maxed out sytem with an overrated psu
ex. diablotek 300w thats only capable of 250w max, and a system containing fx9 220w cpu

[AbedsBrother]

_I_ eredeti hozzászólása:

min recomended is just that, recomended

There's a reason for that "recommendation."

_I_ eredeti hozzászólása:

recomended is to be able to run the specific hardware on a maxed out sytem with an overrated psu

The recommendation is what the equipment is designed to achieve. Or in the case of the GTX 750, the amount of wattage required to safely operate the equipment.

_I_ eredeti hozzászólása:

ex. diablotek 300w thats only capable of 250w max, and a system containing fx9 220w cpu

First of all, bad example. That situation would never exist - the computer probably wouldn't even boot.

The GTX750 has a 65W TDP and a recommended power supply requirement of 300W. Here's how a build might break down:
Intel Core2Duo E-8400 - 65w
Platter Hard Drive - 20W
Motherboard - 20W
CD drive - 20W
GTX 750 - 65W

Let's say the user wants to add another platter hard drive, for another 20W.
We're looking at 210W. That works, right? By the numbers. (these estimates are very rough, and will vary greatly by system)

But there are other elements in play. At 250W, the user has 40W of leeway. There is still dither and brown-outs to account for, like for instance in the summer when everyone has their air conditioner on. Which is why the recommended 300W allowance provides a greater "cushion" to handle inclement draw / supply. Companies test for this (the good ones do, anyway), they evaluate for it, and I'm pretty sure their engineers know more about it that I do. It's arrogant to assume the opposite.

Even if running a GTX750 on 250W psu would work, that does not mean it is safe or advisable. And when in doubt, it is always better to NOT circumvent the parameters a manufacturer specifies. Otherwise, you'll only have yourself to blame if something catastrophic happens.

[Blue Palmetto]

Hmm...I have a GTX 960 in a machine with a 375 power supply. All the calculators say I'm at about 320W total. Should I get a 400W power supply?

[[AU] Tabris:DarkPeace]

You're only at 85.333% max load, with over 50 watts spare. Still safe, just.