Hi,
we are running a workstation with TWO quad-core Xeon (90 W). We want to do CUDA simulation with a powerful nvidia GTX card. The power supply specs are on the picture
http://imgur.com/r7igCO8
It has to be either the
GTX 980 (180W 6pin + 6pin),
or
GTX 780 Ti or GTX Titan black (both 250W 6pin + 8pin)
nvidia card due to speed and memory considerations. Actually while the 980 is benchmark leader in gaming, for the CUDA software we want to use the Titan is 10-20% faster. So the developer of this software is not recommending a Titan Z, as under 24/7 load this card is probably dying really fast, he recommends no double GPU at all.
While studying now different OEM offers of the 980 I see models ranging from 1-4 fans (only 180W for overclocked versions), Titan black only 1 fan, 780 ti 2 fans (250W). So should one use such cards only for gaming with short performance peaks? And why needs a 180 W card 4 fans?
Currently I'm favoring this gtx 980
https://geizhals.de/evga-geforce-gtx-980-ftw-acx-2-0-04g-p4-2986-a1229513.html?hloc=at&hloc=de
with 2 fans. It looks like EVGA put really some copper cooler on the nvidia chip, while other vendors simply put 4 fans on it?! Is this the biggest difference? I see also water cooled cards for the 980 offered..Should we think about this or is it guarenteed by EVGA and other vendors that the card can run 24/7 at high performance when manually overclocked by the customer?
Also I want to ask if these cards can be used with above power supply? So as I understand the 12V1-2 are used for the Xeon CPUs, while the 12V3-6 should be used for graphics card. The board has 2 pcie x16 ver2.0 slots. As I've googled, theoretically 75W come from the pcie slot.
On the image it says 12V1-6 combined power max. 950 W.
Adding up 4x12x18 + 2x12x16 = 1248 Watt on all rails, but for 24/7 only 950W should be used? So do the amps from the 6pin and 8pin add up for the 15-21 amps required for a 180-250W card, or can I run anyway no 250W card with this power supply?
I was using this PSU calculator http://www.enermax.outervision.com/ and come up with 450W for the current system without graphic card. So basically one card should be ok or even two 980 in SLI, but two 250W in SLI would be too much for this system?
Thanks for your tips!
we are running a workstation with TWO quad-core Xeon (90 W). We want to do CUDA simulation with a powerful nvidia GTX card. The power supply specs are on the picture
http://imgur.com/r7igCO8
It has to be either the
GTX 980 (180W 6pin + 6pin),
or
GTX 780 Ti or GTX Titan black (both 250W 6pin + 8pin)
nvidia card due to speed and memory considerations. Actually while the 980 is benchmark leader in gaming, for the CUDA software we want to use the Titan is 10-20% faster. So the developer of this software is not recommending a Titan Z, as under 24/7 load this card is probably dying really fast, he recommends no double GPU at all.
While studying now different OEM offers of the 980 I see models ranging from 1-4 fans (only 180W for overclocked versions), Titan black only 1 fan, 780 ti 2 fans (250W). So should one use such cards only for gaming with short performance peaks? And why needs a 180 W card 4 fans?
Currently I'm favoring this gtx 980
https://geizhals.de/evga-geforce-gtx-980-ftw-acx-2-0-04g-p4-2986-a1229513.html?hloc=at&hloc=de
with 2 fans. It looks like EVGA put really some copper cooler on the nvidia chip, while other vendors simply put 4 fans on it?! Is this the biggest difference? I see also water cooled cards for the 980 offered..Should we think about this or is it guarenteed by EVGA and other vendors that the card can run 24/7 at high performance when manually overclocked by the customer?
Also I want to ask if these cards can be used with above power supply? So as I understand the 12V1-2 are used for the Xeon CPUs, while the 12V3-6 should be used for graphics card. The board has 2 pcie x16 ver2.0 slots. As I've googled, theoretically 75W come from the pcie slot.
On the image it says 12V1-6 combined power max. 950 W.
Adding up 4x12x18 + 2x12x16 = 1248 Watt on all rails, but for 24/7 only 950W should be used? So do the amps from the 6pin and 8pin add up for the 15-21 amps required for a 180-250W card, or can I run anyway no 250W card with this power supply?
I was using this PSU calculator http://www.enermax.outervision.com/ and come up with 450W for the current system without graphic card. So basically one card should be ok or even two 980 in SLI, but two 250W in SLI would be too much for this system?
Thanks for your tips!
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