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580 Quad SLi
- Thread starter mikkyh
- Start date
Aaah thanks.
Now I am jealous XD
He has a 980x and quad 580 in there...beast of a machine.
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the two things that concern me about that vid are:
a - he blew the cpu fan header and seemed fine with the fact that his overclecked £800 cpu was actually running prime95 passively
b - its sucking up 2.2kw yet i can only see a 1.2kw psu there...
a - he blew the cpu fan header and seemed fine with the fact that his overclecked £800 cpu was actually running prime95 passively
b - its sucking up 2.2kw yet i can only see a 1.2kw psu there...
that video smells of bs a bit.
480 in quad sli in furmark draws 1400W
I dont think that his prime 95 on cpu and 480>>>580gtx can add some 800W to the below machine???
back to the thread.
Quad SLI has always been there. 580GTX is nothing different. Dont know who told you it couldnt?
Although this setup is
A) inefficient.
B) expensive.
C) a bit nutty.
D) power hog.
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What does that measured number mean ? Shouldn't we take into consideration efficiency of that PSU at its "above max" load ? Could be pretty low. No doubt running furmark on quad 580 with dissabled throtling and on PSU like that is crazy. So is running quad 580 on air imo. I would also think that op should be fine with 3 way SLI and hit 60+ fps in any game unless he uses some double monitor setup with extreme resolutions.
The measured number (in the video provided by Speed) is AC input the PSU is pulling from the wall socket.
It is possible (as you suggest) that the PSU is inefficient at this level of load. Somewhere in the region of 60% efficiency would make the 1200w PSU pull around 2000w from the wall. (1.2Kw of DC output requiring 2Kw of AC input).
It is also possible that the PSU is actually supplying more than its rated capacity (perfectly possibly on high end units) although again the number we are seeing will not tell us this.
Lets assume the above is true and it is outputting 1400w at 70% efficiency. This would make the PSU pull 2000w of DC input again very similar to the number we are seeing.
Given how efficient power supplies have become I would imagine that the latter scenario above is actually being shown (PSU outputting beyond its rated capacity). It is well know that high end PSU's can do this at the cost of efficiency, even a 70% efficient PSU outputting 1400w would still pull an extra 600w from the wall so it's perfectly feasible that this video is real.
Isnt the Xeon a server chip, though ? What use does it have in a gaming system over the i7 ?
This is completely wrong. Adding more cores to the system will not improve a god damn thing.
I7 980 is the best CPU you can have 6 cores 12 threads.
MHz is they key not the number of cores.
Oh and I highly doubt antec psu can go down to 60% no matter what the load.
I7 980 is the best CPU you can have 6 cores 12 threads.
MHz is they key not the number of cores.
Oh and I highly doubt antec psu can go down to 60% no matter what the load.
you put that lot in a case and it wouldnt run for long without some serious cooling......