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What PSU do I need.

post #1 of 11
Thread Starter 
Hey guys, I was thinking soon that I will spend a bit of my savings and try and build a beast of a gaming computer. The computer I have in mind is

CM HAF X
i7 3930K (hopefully @ 5 GHz or something along those lines)
Corsair H100 with Cougar CF-V12HP fans
2 x GTX 680s (they are in stock in Australia barely)
Asus Sabertooth X79
G.Skill 16G (4x4GB) DDR3-2400 Quad Channel
Crucial RealSSD C400 128G SATA3 M4 Series
Seagate SATA3 2TB 7200RPM Barracuda 64mb Cache.

I was considering getting the Corsair AX-1200 PSU but does this system need all of it or is this the best PSU for a system like this. I only ask this because it is an expensive PSU. I may consider in the future to mildly overclock the GTX 680s a bit but not the extreme.

Thanks in advance.
post #2 of 11
750-800W is what you need, and only because of the very thirsty CPU, with a Sandy or Ivy the requirements would have been even lower... and since this is a gaming rig, may I ask why SandyB-E!?
post #3 of 11
Thread Starter 
I honestly don't know at this stage, I am only speculating at this stage. So 850 should be able to cover the lot. That seems very good. May I ask when do you need 1200W?
post #4 of 11
Buying from Australia? Yeah... don't spend ~$360 on a AX1200. Yikes.


SuperFlower Golden Green 80+ Gold 800W
$179

Sin, this is the Rosewill Lightning 800, isn't it? just checking.


When would you need a 1200w?

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Simplicity
(16 items)
 
#2 PC
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CPUMotherboardGraphicsRAM
i5 6600k MSI Gaming Z170A EVGA GTX 980 Classified Crucial Ballistix Tactical (2 x 8GB) DDR4 2666 
Hard DriveCoolingOSMonitor
Samsung Pro 950 Cryorig H7 Windows 7 Ultimate x64 CrossOver 2560x1440 IPS 
PowerCaseMouseMouse Pad
Rosewill Capstone 550-M Phanteks Enthoo Pro RAZER Abyssus Mirror Special Edition XTRAC Ripper 
AudioAudioAudioAudio
Asus Xonar Essence STX Dayton Audio B652 Lepai Tripath Class-T Hi-Fi Audio Mini Amplifier 8 Inch 60-Watt Powered Subwoofer 
CPUMotherboardGraphicsRAM
Intel q9300 Intel DP45SG MSI TFII GTX 660 Corsair Dominator 1333 
Hard DriveCoolingOSMonitor
Corsair Force 3 90gb Deepcool Gammaxx 300 Windows 7 Samsung SyncMaster 932bw 
KeyboardPowerCaseMouse
Dell Rosewill Lightning 800w CM Stryker Dell 
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post #5 of 11
Quote:
Originally Posted by jagz View Post

Buying from Australia? Yeah... don't spend ~$360 on a AX1200. Yikes.

SuperFlower Golden Green 80+ Gold 800W
$179
Sin, this is the Rosewill Lightning 800, isn't it? just checking.
When would you need a 1200w?
OC'd GTX 480 x3 + 5Ghz 990x
Yep smile.gif
Quote:
Originally Posted by theunk0wn View Post

I honestly don't know at this stage, I am only speculating at this stage. So 850 should be able to cover the lot. That seems very good. May I ask when do you need 1200W?
You need 1200W with a power pig CPU(Gulftown, Nehalem or Sandy Bridge-E) and three pig GPUs(high end Fermi or highly overclocked 7970s)... for example, you could run four 680s and a 3930x on a premium 1200W unit, with a Sandy Bridge or Ivy Bridge CPU you could do the same on a 1000W unit. smile.gif

I suggest you go with Ivy Bridge, the 3930X is doing nothing for you since this is a gaming system.
post #6 of 11
Thread Starter 
Yeah I am thinking the same way because I don't need the 3930K for anything else and all I am doing is gaming. Thanks for all of your help.
post #7 of 11
YW!
post #8 of 11
corsair ax 850 should be plenty. Also I have a Hx 1050 in the marketplace if you're interested

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post #9 of 11
Thread Starter 
In the end, I decided to go with the HX-850 PSU with the i5 3570K and I'll try and get it to 5 GHz (I heard that they are a pain to overclock so 4.6 GHz is probably a realistic target.)
post #10 of 11
Quote:
Originally Posted by theunk0wn View Post

In the end, I decided to go with the HX-850 PSU with the i5 3570K and I'll try and get it to 5 GHz (I heard that they are a pain to overclock so 4.6 GHz is probably a realistic target.)
With a better cooler(a large twin tower design) and a good chip you should be able to do 4.7-4.8Ghz for daily use... also, the Super Flower unit suggested above is superior to the HX850 and if I'm not mistaken also cheaper.
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