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Advice on which Psu would best suit my 7750.

Last response: in Components
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February 19, 2013 12:38:00 PM

So i have bought an Saphire HD7750. And it's written that a 400W is recommended.
I got a 250W. Some people says that that would be enough, but i dont plan to take risks.
So please recommend me a good 400W PSU. Cheap, Efficient and worth it. A good psu for its price.
Please message me if i have to put any other info besides these.
Motherboard: M4N68T-M V2
Processor: AMD Athlon(tm) II X2 250 Processor 3.00 GHz
RAM: 2GB
Windows 7
Game DOTA2






Peace#!

More about : advice psu suit 7750

a b ) Power supply
February 20, 2013 4:45:49 PM

I'm running the exact same card in a mini-ITX system with an Antec 150W PSU. That doesn't mean you are in the clear though. I specifically designed every other component in the system to be low power.

The card pulls about 46W at load so you are probably OK. It might be a good idea to invest in a power meter like a kill-a-watt and measure your power draw before you install the card. That will give you an idea of how much headroom you have to work with.
a c 1106 ) Power supply
February 20, 2013 6:50:30 PM

If your 250 Watt power supply has a maximum combined +12 Volt continuous current rating of 17 Amps or greater it should work.

What is the brand and model number of your 250 Watt power supply unit?
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February 20, 2013 7:25:07 PM

You'll pushing that PSU to the max. I wouldn't recommend it. Even a 350 watts power supply would be able to run that card but i wouldn't risk it with a 250w one.
a b ) Power supply
February 20, 2013 9:20:52 PM

You don't know that. Until the OP tells us what model his PSU is then all we can do is guess.

The 7750 needs 43W or a little less than 4A at full peak to run (link). All of those amps must come from the +12V rail. We don't know how many amps he's got until he looks at the label. Even then, a less reputable PSU OEM will not be accurate or outright lie on the label. I would run a 7750 on a 200W SeaSonic, but I wouldn't run it on a 350W CoolMax.

For the record, my 150W PSU has only 10A on the +12V rail. Max system power draw measured at the outlet during gaming is 99.3W. But like I said before, I've got a reputable power supply brand and hand selected parts to fit in that power window.
a b ) Power supply
February 20, 2013 11:29:39 PM

XFX Core Edition Pro 450. Cheap, quiet, reliable, high quality, 5 year warranty and built by Seasonic.
Win, win, win and more win.
February 21, 2013 12:01:00 PM

ko888 said:
If your 250 Watt power supply has a maximum combined +12 Volt continuous current rating of 17 Amps or greater it should work.

What is the brand and model number of your 250 Watt power supply unit?


i've got GTR LC-B250SFX
February 21, 2013 12:02:40 PM

rwpritchett said:
You don't know that. Until the OP tells us what model his PSU is then all we can do is guess.

The 7750 needs 43W or a little less than 4A at full peak to run (link). All of those amps must come from the +12V rail. We don't know how many amps he's got until he looks at the label. Even then, a less reputable PSU OEM will not be accurate or outright lie on the label. I would run a 7750 on a 200W SeaSonic, but I wouldn't run it on a 350W CoolMax.

For the record, my 150W PSU has only 10A on the +12V rail. Max system power draw measured at the outlet during gaming is 99.3W. But like I said before, I've got a reputable power supply brand and hand selected parts to fit in that power window.


Ive got LC-B250SFX. Thanks
a c 1106 ) Power supply
February 21, 2013 2:49:21 PM

Strangers4life09 said:
i've got GTR LC-B250SFX

That's a generic brand power supply with a maximum combined +12 Volt continuous current rating of 16 Amps. Whether or not that power supply is able to actually supply what is specified on the label determines whether or not it will work.
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