power supplies and cuda

Author	Message
nemesis Send message Joined: 12 Oct 99 Posts: 1408 Credit: 35,074,350 RAC: 0	Message 1060320 - Posted: 27 Dec 2010, 22:28:46 UTC i have a board that will take three GTX 260's what wattage of power supply should i look for? i'll be using a Q6600 or a Q6700 as the cpu ID: 1060320 ·

kittyman Volunteer tester Send message Joined: 9 Jul 00 Posts: 51468 Credit: 1,018,363,574 RAC: 1,004	Message 1060324 - Posted: 27 Dec 2010, 22:33:36 UTC - in response to Message 1060320. I'm running a PC Power and Cooling 910w Silencer on the Frozen 920 with 2 GTX295s... And I have seen the Killwatt hit 850 watts or so. I have posted many times that the PSU is no place to skimp. Buy the best, and when you have problems, you should not have to look at the PSU as a possible culprit. Single 12v rail supplies are the best in my opinion, and having extra headroom is your friend. "Freedom is just Chaos, with better lighting." Alan Dean Foster ID: 1060324 ·

dcappello Send message Joined: 3 Apr 99 Posts: 261 Credit: 170,969,320 RAC: 0	Message 1060345 - Posted: 28 Dec 2010, 0:34:00 UTC Phud, I have box running 2 GTX260s with an air-cooled 920 - I have a modular corsair HX620 in there and the killAwatt reads 460-511, So I think you should at least spring for a 1000W unit like the Corsair HX1000 and give yourself some room - sounds like a nice cruncher! ID: 1060345 ·

Sutaru Tsureku Volunteer tester Send message Joined: 6 Apr 07 Posts: 7105 Credit: 147,663,825 RAC: 5	Message 1060347 - Posted: 28 Dec 2010, 0:47:45 UTC - in response to Message 1060320. Last modified: 28 Dec 2010, 0:49:09 UTC My QX6700 use ~ 190 W stock, OCed ~ 215 W (only with nVIDIA 6200 LE card). Your Q6600 is the 11 stepping, IIRC ~ 95 W TDP (same for Q6700?)? So maybe ~ 35 W less. 1 of my 5 manufacturer OCed GTX260-216 use ~ 140 W in CUDA mode. My PCs running at ~ 50 % PSU wattage.. 940 BE with 4x GTX260 ~ 700 W, 1250 W PSU. 56 %. E7600 with GTX260 ~ 250 W, 520 W PSU. 48 %. ID: 1060347 ·

zoom3+1=4 Volunteer tester Send message Joined: 30 Nov 03 Posts: 65762 Credit: 55,293,173 RAC: 49	Message 1060413 - Posted: 28 Dec 2010, 4:20:32 UTC An Enermax Revolution 85+ 1050w psu will run 2 GTX295 cards, So It would have no trouble running 3 GTX260 cards. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's ID: 1060413 ·

Fred J. Verster Volunteer tester Send message Joined: 21 Apr 04 Posts: 3252 Credit: 31,903,643 RAC: 0	Message 1060491 - Posted: 28 Dec 2010, 12:12:04 UTC - in response to Message 1060413. My Q6600 (100C!)& ATI 4850 & 5870, also hot, 87 and 90C, draws 550Watt and has an 650Watt PSU. Have a spare at hand, but it keeps running stable, only the screen-lag is terrible, the 2 cards, running in PCI-Ex 16, ver.2.0. It takes about 30 seconds to show only (part off) BOINC, what should be white, is now shown with my Background picture. For some reason my XP64 host, with the same mobo runs a GTX470 in 2x mode and 480 in 1x mode, version 1.0. Only thing I can think of is the X38 chipset...... No screen-lag, also no (big) change in computing time, by this restriction! It uses also 550Watt, but has an 850Watt PSU. Which gets hardly warm, ~40C But this rig has no case. ID: 1060491 ·

Dave Send message Joined: 29 Mar 02 Posts: 778 Credit: 25,001,396 RAC: 0	Message 1060502 - Posted: 28 Dec 2010, 13:13:49 UTC Drawing 550 with a 650 PSU is too close to the wire. & why the hell is it 100C? Is the fan ok? ID: 1060502 ·

Brkovip Send message Joined: 18 May 99 Posts: 274 Credit: 144,414,367 RAC: 0	Message 1060507 - Posted: 28 Dec 2010, 13:18:33 UTC - in response to Message 1060491. My Q6600 (100C!)& ATI 4850 & 5870, also hot, 87 and 90C, draws 550Watt and has an 650Watt PSU. Have a spare at hand, but it keeps running stable, only the screen-lag is terrible, the 2 cards, running in PCI-Ex 16, ver.2.0. It takes about 30 seconds to show only (part off) BOINC, what should be white, is now shown with my Background picture. For some reason my XP64 host, with the same mobo runs a GTX470 in 2x mode and 480 in 1x mode, version 1.0. Only thing I can think of is the X38 chipset...... No screen-lag, also no (big) change in computing time, by this restriction! It uses also 550Watt, but has an 850Watt PSU. Which gets hardly warm, ~40C But this rig has no case. 100C on that processor is very dangerous for temps. I would check into more cooling immediately! ID: 1060507 ·

Sutaru Tsureku Volunteer tester Send message Joined: 6 Apr 07 Posts: 7105 Credit: 147,663,825 RAC: 5	Message 1060519 - Posted: 28 Dec 2010, 13:46:42 UTC - in response to Message 1060507. Last modified: 28 Dec 2010, 14:02:28 UTC My Q6600 (100C!)& ATI 4850 & 5870, also hot, 87 and 90C, draws 550Watt and has an 650Watt PSU. Have a spare at hand, but it keeps running stable, only the screen-lag is terrible, the 2 cards, running in PCI-Ex 16, ver.2.0. It takes about 30 seconds to show only (part off) BOINC, what should be white, is now shown with my Background picture. For some reason my XP64 host, with the same mobo runs a GTX470 in 2x mode and 480 in 1x mode, version 1.0. Only thing I can think of is the X38 chipset...... No screen-lag, also no (big) change in computing time, by this restriction! It uses also 550Watt, but has an 850Watt PSU. Which gets hardly warm, ~40C But this rig has no case. 100C on that processor is very dangerous for temps. I would check into more cooling immediately! Maybe he meant the Tj.Max of this CPU? If 100 Â°C CoreTemp, the CPU will die very quickly. My E7600 have a Tj.Max of 100 Â°C and is currently ~ 47 Â°C Delta to Tj.Max. Currently 16 Â°C ambient in room, windows opened for fresh air.. ;-) I would stay '> 20 Â°C Delta to Tj.Max' at 24/7 crunching. [CPU-Core temps] BTW. If you change the overvies in your BOINC Manager, it last up to 30 secs? EDIT: I wouldn't use the PSU (much) above ~ 50 % of the max W (at 24/7 crunching). ID: 1060519 ·

nemesis Send message Joined: 12 Oct 99 Posts: 1408 Credit: 35,074,350 RAC: 0	Message 1061681 - Posted: 30 Dec 2010, 23:51:04 UTC ordered this http://www.newegg.com/Product/Product.aspx?Item=N82E16817121068 sure to have enough headroom. ID: 1061681 ·

kittyman Volunteer tester Send message Joined: 9 Jul 00 Posts: 51468 Credit: 1,018,363,574 RAC: 1,004	Message 1061683 - Posted: 30 Dec 2010, 23:56:22 UTC - in response to Message 1061681. ordered this http://www.newegg.com/Product/Product.aspx?Item=N82E16817121068 sure to have enough headroom. Should do the trick nicely. "Freedom is just Chaos, with better lighting." Alan Dean Foster ID: 1061683 ·

dcappello Send message Joined: 3 Apr 99 Posts: 261 Credit: 170,969,320 RAC: 0	Message 1061705 - Posted: 31 Dec 2010, 0:14:25 UTC Yea that should do it - plus the extra bling - it definitely draws Aliens in... ID: 1061705 ·

nemesis Send message Joined: 12 Oct 99 Posts: 1408 Credit: 35,074,350 RAC: 0	Message 1064043 - Posted: 6 Jan 2011, 19:43:51 UTC Last modified: 6 Jan 2011, 19:44:21 UTC i have to get a bigger case.. this antec behemoth is too short.. http://s281.photobucket.com/albums/kk237/phud_isley/puters/?action=view&current=100_0886.mp4 ID: 1064043 ·

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