i will be overclocking the EVGA GeForce GTX 580 Fermi 772MHZ 1536MB GDDR5 2XDVI Mini-HDMI PCI-E Video Card to about 850 mhz and the i7 to about 4.4ghz, got a few case fans and a sound card, and other basic components, will my Corsair Professional Series Gold AX850 CMPSU-850AX 850W ATX Fully Modular 80PLUS Gold Power Supply handle it? or should i not oc?

I think youll be ok with that PSU with that hardware and those overlcocks. Just dont let it do something like folding or number crunching for days on end. Also don't unlock the 580's bios to do anything over 1.15v.
 
No need to upgrade PSU, especially if you upgrade to GTX680 SLI down the road cause the 680's will use less power then the 580's.
 
 

Not enough at all under stress (bf3, benchmarks etc) expecially if you want to overclock them.
 
AX1200 is strongly advised. (but an AX1000 should be enough)

850 is borderline IMO. I have the same specs and went with a 1kW. See my mods rigs for details.

You'll be good, just don't OC the cards. If you want to OC, you'll need at least a 950W PSU or something with 80A+ combined on the 12V rail(s).

Zibri


Not enough at all under stress (bf3, benchmarks etc) expecially if you want to overclock them.

AX1200 is strongly advised. (but an AX1000 should be enough)

I've heard or read bad things about that ax1000. I would recommend the ax1050 instead. The ax1200 would be a great choice too.

XrayMan

Zibri


Not enough at all under stress (bf3, benchmarks etc) expecially if you want to overclock them.

AX1200 is strongly advised. (but an AX1000 should be enough)

I've heard or read bad things about that ax1000. I would recommend the ax1050 instead. The ax1200 would be a great choice too.

 
I think you mean the HX1000, there is no AX1000, just the HX1050 (which is the newer model of the HX1000W).

XrayMan

Zibri


Not enough at all under stress (bf3, benchmarks etc) expecially if you want to overclock them.

AX1200 is strongly advised. (but an AX1000 should be enough)

I've heard or read bad things about that ax1000. I would recommend the ax1050 instead. The ax1200 would be a great choice too.

 
You guys mean "HX"1000.
 
Corsair doesn't produce a model AX1000, only the AX650, AX750, AX850 and AX1200 are under the designation of AX or 80 Plus Gold certified. 
 
The HX1050 is also a great PSU, strong 12V rail. Anything above 1000W or 80A+ will suffice a 580 SLI and 2600K system. 

I personally upgraded from the HX series to the AX... and I am amazed.
 
Would definitely recommend the AX850 or AX1200.
 
The HX1050 is also great, but avoid the HX1000 as it is outdated.

MJCRO

XrayMan

Zibri


Not enough at all under stress (bf3, benchmarks etc) expecially if you want to overclock them.

AX1200 is strongly advised. (but an AX1000 should be enough)

I've heard or read bad things about that ax1000. I would recommend the ax1050 instead. The ax1200 would be a great choice too.

You guys mean "HX"1000.

Corsair doesn't produce a model AX1000, only the AX650, AX750, AX850 and AX1200 are under the designation of AX or 80 Plus Gold certified. 

The HX1050 is also a great PSU, strong 12V rail. Anything above 1000W or 80A+ will suffice a 580 SLI and 2600K system. 

Oooops! Yes, mean't the HX series.       

XrayMan

Oooops! Yes, mean't the HX series.       

 
There are so many PSU's to keep track of. :P

AX 1200 was the only PSU I would give up my PC Power and Cooling 910 for. If I was you, I would go with either the AX1200 or the PC Power and Cooling 910. I ran multiple cards and a i7 920 on the PC Power for a couple three years... The PSU would not even heat up! Look up Jonnyguru's reviews of both...

chrisdglong


AX 1200 was the only PSU I would give up my PC Power and Cooling 910 for. If I was you, I would go with either the AX1200 or the PC Power and Cooling 910. I ran multiple cards and a i7 920 on the PC Power for a couple three years... The PSU would not even heat up! Look up Jonnyguru's reviews of both...

 
What about the Silencer MK.II 950W? 

MJCRO

chrisdglong


AX 1200 was the only PSU I would give up my PC Power and Cooling 910 for. If I was you, I would go with either the AX1200 or the PC Power and Cooling 910. I ran multiple cards and a i7 920 on the PC Power for a couple three years... The PSU would not even heat up! Look up Jonnyguru's reviews of both...

What about the Silencer MK.II 950W? 

I believe they went with a different setup for that one, not the usual Seasonic deal. I don't know for sure, but I believe that was the rumor. I guess you could go to the source directly too and get a Seasonic PSU.

The new HX1050 is fine. The problem with the HX1000 is the split rail. You have to make sure you plug the second GPU to the second rail. Problem is the manual doesn't tell you that, or even which plugs are on which rail.