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750w or 1200w

post #1 of 11
Thread Starter 
Hi everyone,
Sorry for not reading 10-20 topics on the forums, i really dont have the time. And whenever you read something, the builds are really different to this one, and I cannot make a good judgement on that.

Came to the place where smart people may help me on this one.
So, the build:

MotherBoard Z68 S1155 ATX/GA-Z68X-UD3H-B3 GIGA-BYTE
PSU -- ?
Processor INTEL CORE I7-2600K 3.4G 8M LGA1155 BOX
GPU ASUS GTX590 PCIE 3GB GDDR5
RAMs CORSAIR DDR3-1600 2*4G CL9 VENGEANCE LP
CASE ANTEC MIDITOWER ATX P193 BLACK


I basicly have 3 choices from Corsair, for a PSU:

AX 750w
HX 850w
AX 1200w

The main question is - ax750 or ax1200 ? I do realise that 1200 may be an overkill, but then again, 750 may not be enough, as some say. And HX850 is an option, yes, but I'd have to wait 3 weeks for it to get to me, so I mentally cross that out (these 3 options above are the best the warehouse can offer me, and I really dont want to buy anywhere else, as I get a huge discount from there)

If the AX 1200w doesn't take more energy than AX 750 w on idle and so on, I'll go with ax1200 without a doubt. As you can already tell, im not that computer literate , though, need professional help ASAP.

Thank you for your imput, whatever it may be.
post #2 of 11
The AX750 will easily deal with your setup.
post #3 of 11
750 is enough; enjoy!
post #4 of 11
ok the 750 would be enough as it's 80% efficient. But i highly suggest you get the 1200w so you have room to expand to a second 590 or watercooling. And if you change your specs in the future like lga2011 or new gpus you are set to go on the PSU. Considering capacitors have 10% degradation average per year you should be fine to punish your PSU with dual 690s and i7 3960x easy mode even more like 5++ years to come.
post #5 of 11
750W is not enough
850W is just enough, however you won't be able to OC that much without pushing it to the max

AX1200 will give you plenty of headroom for OCing and future upgrades, and will be more efficient (I think) as most PSUs are most efficient at 50% load .
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post #6 of 11
Lovely misinformation...

Quote:
Originally Posted by overclocker23578 View Post
750W is not enough
850W is just enough, however you won't be able to OC that much without pushing it to the max


Requirements
Minimum of a 700 Watt power supply.
(Minimum recommended power supply with +12 Volt current rating of 50 Amps.)

http://www.evga.com/products/moreInf...s%20Family&sw=

That's even the manufacturers recommendation, which we all know errs heavily on the side of caution.
post #7 of 11
Thread Starter 
Thanks a lot guys, swift repies was exactly what I was looking for !

At first, I thought 750w would be enough, but you never know, I may want to upgrade to a second 590, and watercooling is definately in the plans.

This place is great, thanks a lot ! I'll be placing my order very soon ;D
post #8 of 11
gotta love people spreading misinformation..
Quote:
Originally Posted by overclocker23578 View Post
750W is not enough
850W is just enough, however you won't be able to OC that much without pushing it to the max

AX1200 will give you plenty of headroom for OCing and future upgrades, and will be more efficient (I think) as most PSUs are most efficient at 50% load .
you're totally wrong.

A 2600k system along with a 590 wont pull more than ~600 watts at load.
The 750 one would easily be enough for OC even.

Personally I'd recommend the 850W one though, its perfectly enough for the said system and yet provides a considerable margin of headroom for higher OC and stuff.
1200W is deffo over the top unless you want to go quad-sli at some point.
Edited by toX0rz - 10/25/11 at 4:21am
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post #9 of 11
Lol so funny indeed!

the AX750 is a solid unit and gold certified, it peaks at around 900W max load.

Go for the 750W, u wont need more.

http://www.overclock.net/power-suppl...alculator.html
Is a nice program made by phaedrus!
Edited by 1337LutZ - 10/25/11 at 4:23am
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post #10 of 11
The AX1200w psu is way over the top for the system you have now. Your spending $100 more than you need to and come the end of the month the power bill might be slightly higher too!
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