AX850 enough for this ?

[Markfw]

So I have a 3930k coming, and expect to OC to at least 4.5. It will have 2 560ti video cards (frozer 2 OC@880 mhz) and 24 gig of ram in 6 sticks, one HD, 2 optical and a couple of fans.

I want to use my AX850. I have an AX1200 running a 950@4 ghz, ans 3 sticks of ram and 2 470 video cards. Kill-a-watt says it takes 690 at full load, so the 850 could be used on it ? This is for 24/7 full load usage. Thats 80% full load 24/7 ? Is that pushing an 850 ?

And how much more will the 560's take over the 470's ? and how much more will the 3930k take@4.5 vs the 950@4.0 ? I really don;t want to buy another AX1200 if I don't have to. One or the other of these two systems needs to use the AX850 if I want to save myself another PSU.

I read somewhere that the 39xx series@4.5 takes about 320 watts. I think the 460's take about 200 each, thats 720, and the rest maybe 30 watts more for 750 total. Us that pushing the 850 too far ? would 690 push it too far? Again how much more for the 560's ?

 

[General Kenobi]

See here for the GTX 560 Ti SLI power consumption. Check this for the 3930K power consumption at 4.7 GHz (max. 525W). Based on these tests, I think you'd be pushing your luck with an AX850 for 24/7 usage at the load you mentioned.

 

[lehtv]

See here for the GTX 560 Ti SLI power consumption. Check this for the 3930K power consumption at 4.7 GHz (max. 525W). Based on these tests, I think you'd be pushing your luck with an AX850 for 24/7 usage at the load you mentioned.

The test setup in the 3930K review does include a GTX590 though which consumes 50W at idle. But you're right, the highly overclocked hexacore is a power hog, and reducing the load by 50W is small relief.

However, you're never going to run the GPU's and the CPU at max simultaneously unless stress testing or testing for maximum power consumption. In practice the CPU isn't going to eat 300 watts while you're gaming. It'd just about work on the AX850 but it'd be wise to buy 1000W.

 

[Markfw]

Well, yes, I will have both GPU's and the CPU at full load 24/7 for F@H. The next question is, will the AX850 support the I7 850@4 ghz and 2 47s that take 695 watts under kill-a-watt ? Thats 80% load.

 

[Markfw]

Well, I think I figured this out. I have a 950 @ 4 ghz and 2 460's that is using 540-550 watts from the wall at full load. THAT system has a AX1200, that I could remove and put the 850 in with room to spare. And that AX1200 can handle anything.

 

[Idontcare]

Well, I think I figured this out. I have a 950 @ 4 ghz and 2 460's that is using 540-550 watts from the wall at full load. THAT system has a AX1200, that I could remove and put the 850 in with room to spare. And that AX1200 can handle anything.

I was just going to post this, then saw you already beat me to it

Yep, time to "optimize" your PSU allocation across the various rigs :thumbsup:

 

[Sunny129]

However, you're never going to run the GPU's and the CPU at max simultaneously unless stress testing or testing for maximum power consumption...

...or participating in distributed computing projects 24/7, which is what the OP will be doing. so its quite the contrary - his CPU and GPUs will probably be at or near 100% load just about all the time. sometimes we crunchers forget to mention the obvious when we're posting outside the DC forum ...and that usually leads folks to assume that we're just talking about a gaming rig.

 

[lehtv]

 

[Rvenger]

Well, I think I figured this out. I have a 950 @ 4 ghz and 2 460's that is using 540-550 watts from the wall at full load. THAT system has a AX1200, that I could remove and put the 850 in with room to spare. And that AX1200 can handle anything.

That AX850 can peak 950w no problem, so yes if you swap PSUs you will be more than golden.

 

[aaksheytalwar]

I recommend using your ax1200, why take a chance.