HD 7770 Minimum Power Supply

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the 7770 is a 100w card, so not much power is needed, I have a small AMD X2 550 BE thats over clocked with a 7770 in it, max power usage is 213watts, so it depends on your system config
but you could easily use a good quality 430watt PSU and have plenty of power to spare
 
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The quality of your 450W PSU is the crucial part but 7770s requires such low power. So, as long as you have a 6-pin power connector it will run just fine.

I have a 300W bronze PSU and I'm using a GTX 660. Running great!
 
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Lets get some 12 volt amperage ratings on the current power supply to see just what it can do.

The Core i3 2100 is a very low power consuming cpu.

I have used the Molex adapters in the past with no issues. As long as you have the 12 volt current to run it.

Point in case, I7 750(under volted :) ) + 5770 is more then within the 12 volt power of my 300 watt power supply(22 Amps @ 12 volts). And the 7770 takes LESS power. It just needs to have the 6 pin connector. In honestly, with some slight tweaks(lower voltage and a good chip) it would not even need one.

EDIT. Just saw the "no name" thing and am worried a bit.

Picture for sure.
 
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Which is really low compared to todays standards. You should have at least 30A for modern equipment. The more Amperage the better (along with a quality name).
 
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This can lead to a worry about not having the needed power.

The math was just AMP X VOLT = WATT
or
16 X 12 = 192

You could be cutting it close. I mean, it "should" work, but even I am unsure of cutting it that close(And I run a 5770 on a 300 watt unit :) . When it worries ME, it should worry you.).

65 watt cpu(chances are it stays under that) + 80-90 watt video card.. This does not leave lots of room for the rest of the system. All components idle MUCH lower.

The risk is more up to you at this point, but a cheap(not not BAD) 450 watt power supply should be HIGHLY considered.

[strike]Sorry about the newegg.CA. it asked me once and now it always goes to .CA so please check .com if you are in the US[/strike] Fixed

Antec Value psu with 360 watts @ 12 volts.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371045

XFX. A bit more money and power 408 watts @ 12 volts.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207018

Rosewill has become much better with some of the new power supplies. 444 watts @ 12 volts. VERY good value(Still recommended to use a surge bar since it has nothing built in.)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182261
 
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For the love of god, do not, I repeat NOT get an i3 2100 for gaming, I have it right now and its using a 7950 in BF3, on ANY settings, I get max 25fps, normal 19ish. Please do not get it, my god it sucks for gaming. I`m about to upgrade to an i7 3770k
 
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Why in the world would you get an i7 for gaming? A total waste of money. The i5 is cheaper and does everything the i7 can do in games.
 
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