Killed a 525W PSU, throwing a 850W at SETI@home


log in

Advanced search

Message boards : Number crunching : Killed a 525W PSU, throwing a 850W at SETI@home

Author Message
Profile Ryan Helfter
Volunteer tester
Send message
Joined: 7 Jun 00
Posts: 75
Credit: 4,488,605
RAC: 0
United States
Message 1166794 - Posted: 31 Oct 2011, 21:10:24 UTC
Last modified: 31 Oct 2011, 21:11:24 UTC

I know the answer is not I, but I do wonder how many PSUs an average SETI user has gone through?

Profile Ryan Helfter
Volunteer tester
Send message
Joined: 7 Jun 00
Posts: 75
Credit: 4,488,605
RAC: 0
United States
Message 1166795 - Posted: 31 Oct 2011, 21:11:12 UTC - in response to Message 1166794.
Last modified: 31 Oct 2011, 21:11:51 UTC

I am at 5 for my SETI career.

Profile Fred J. Verster
Volunteer tester
Avatar
Send message
Joined: 21 Apr 04
Posts: 3248
Credit: 31,807,137
RAC: 3,335
Netherlands
Message 1166806 - Posted: 31 Oct 2011, 22:04:25 UTC - in response to Message 1166794.
Last modified: 31 Oct 2011, 22:07:55 UTC

I know the answer is not I, but I do wonder how many PSUs an average SETI user has gone through?


(But why do want to throw 850 at SETI, don't know Watt or what, but a CO2 LASER
will certainly do the job?!)

Just choose the right PSU for the rig, having 25% overhead is OK.
CPU =~ 85 -120W, GTX480 = 220W, Mobo, HDD, fans, 35 -75W = 120+220+75= 415Watt. PSU = 650Watt, doesn't even get warm, 28C.
____________

Profile MikeProject donor
Volunteer tester
Avatar
Send message
Joined: 17 Feb 01
Posts: 24197
Credit: 33,333,836
RAC: 24,006
Germany
Message 1166822 - Posted: 31 Oct 2011, 22:49:54 UTC
Last modified: 31 Oct 2011, 22:50:19 UTC

I haven´t killed one by now.
After 9 years just upgraded but the old one is still running in another computer.
____________

Profile Wiggo
Avatar
Send message
Joined: 24 Jan 00
Posts: 7141
Credit: 95,325,896
RAC: 73,433
Australia
Message 1166839 - Posted: 31 Oct 2011, 23:16:40 UTC - in response to Message 1166822.

I havn't killed any either but as hardware here is upgraded so is the PSU and the old stuff just get handed down through the family then out the door.

Cheers.
____________

Profile arkaynProject donor
Volunteer tester
Avatar
Send message
Joined: 14 May 99
Posts: 3654
Credit: 48,600,830
RAC: 2,299
United States
Message 1166846 - Posted: 31 Oct 2011, 23:44:25 UTC

I have blown up 1 PSU so far, but have a couple of extra's lying around just in case.
____________

Profile Ryan Helfter
Volunteer tester
Send message
Joined: 7 Jun 00
Posts: 75
Credit: 4,488,605
RAC: 0
United States
Message 1166862 - Posted: 1 Nov 2011, 0:57:22 UTC - in response to Message 1166806.

I have a quad core + GTX570 SOC, 2 SATA drives, 1 CDROM, 2 fans and crunching 24/7 . Besides, it was onsale at Best Buy for $149 for a Thermaltake 850. Can't beat that :)

archae86
Send message
Joined: 31 Aug 99
Posts: 889
Credit: 1,572,688
RAC: 1
United States
Message 1166863 - Posted: 1 Nov 2011, 1:00:09 UTC

I've replaced three supplies in somewhat over ten years of running SETI/Einstein. One was a hard failure that actually blew a puff of smoke out the power supply vent, then made a bit of a flash when the offending component finished the death dance, which I could see as the flash reflected off the smoke. One was a hard failure, but nothing so spectacular, though I think I recall some bulging capacitors. One was disliked enough by my system that it declined to boot, though a simple voltage check suggested it was largely alive. I'll call that a parametric drift, and not entirely sure whether to blame the supply or the motherboard for them not liking each other.

I don't know how much the extra load of running SETI/Einstein contributed to the failures. Over that period I probably averaged having four systems running--so my failure rate seems to be roughly one for every 140,000 hours of operation, and I only started spending extra for supplies I hoped to be good in about the last five years. I don't, by the way, define "good" as "having an output rating far over double the input power consumption of my rig" despite that being popular advice here.
____________

Profile HAL9000
Volunteer tester
Avatar
Send message
Joined: 11 Sep 99
Posts: 4244
Credit: 116,007,366
RAC: 134,750
United States
Message 1166867 - Posted: 1 Nov 2011, 1:44:30 UTC

Oddly enough I just smoked one on Saturday. I had not realized the 3.5" to 2.5" PATA adapters I was using had exposed solder joints where the power connector was located.
"I'll just set this drive down here on the case where it will be safe & turn it on."
Everything was fine at first. Then I heard the drive spinning down and up a few times. Then lots of smoke from everywhere. It still smells of burnt melted plastic & exploded silicone in here.
____________
SETI@home classic workunits: 93,865 CPU time: 863,447 hours

Join the BP6/VP6 User Group today!

Profile Cheng Fan Soon
Send message
Joined: 3 Oct 05
Posts: 67
Credit: 667,647
RAC: 20
Malaysia
Message 1167097 - Posted: 2 Nov 2011, 4:34:47 UTC

I am thinking the other way, that is to use a smaller power supply(but high efficiency one) to reduce the power consumption
A desktop with a pentium I5 (less than 100W), motherboard+onboard graphics card+harddisk will not consume more than 150W, take out the DVD drive.
So a 250W will be enough.

I also running setiathome on a laptop, this laptop's power supply is only 180Watt.

Profile HAL9000
Volunteer tester
Avatar
Send message
Joined: 11 Sep 99
Posts: 4244
Credit: 116,007,366
RAC: 134,750
United States
Message 1167147 - Posted: 2 Nov 2011, 12:40:52 UTC - in response to Message 1167097.

I am thinking the other way, that is to use a smaller power supply(but high efficiency one) to reduce the power consumption
A desktop with a pentium I5 (less than 100W), motherboard+onboard graphics card+harddisk will not consume more than 150W, take out the DVD drive.
So a 250W will be enough.

I also running setiathome on a laptop, this laptop's power supply is only 180Watt.

Most computer power supplies have their peek efficiency around 50%. So you may want closer to a 200w for maximum efficiency.

One of my systems that used a mobile processor and chipset only pulls 40-50w. So the 350w PSU in that case is running only being loaded about 15%. This is below the 20% load rating for 80Plus. So my efficiency could be awful.

Honestly I am surprised the PSU has lived all these years with that low of a load. Switching PSUs don't care to be underloaded just as much as they don't like being overloaded.
____________
SETI@home classic workunits: 93,865 CPU time: 863,447 hours

Join the BP6/VP6 User Group today!

Profile UliProject donor
Volunteer tester
Avatar
Send message
Joined: 6 Feb 00
Posts: 9807
Credit: 5,462,338
RAC: 411
Germany
Message 1169054 - Posted: 8 Nov 2011, 1:27:55 UTC

I smoked two so far. Yep the last one smelled a little bit, but didn't kill anything else.
____________
Pluto will always be a planet to me.
Order your 15th Seti Anniversary Shirt today. Just PM me for details.
Cash Donation Specialist

Seti Ambassador

Profile Paul D Harris
Volunteer tester
Send message
Joined: 1 Dec 99
Posts: 1123
Credit: 33,598,472
RAC: 0
United States
Message 1169090 - Posted: 8 Nov 2011, 6:40:51 UTC

I have wasted 2 psu the first was a 650 and it bit the dust when I put in my 2nd 460 vc. The second last month a 750 cooler master that I have got a rma on it but waiting for postage money to send it back 5 year warrenty
____________

W5DMG - Dave
Send message
Joined: 19 May 99
Posts: 155
Credit: 32,843,974
RAC: 11,067
United States
Message 1169276 - Posted: 9 Nov 2011, 0:14:51 UTC - in response to Message 1166862.
Last modified: 9 Nov 2011, 0:17:50 UTC

Besides, it was onsale at Best Buy for $149 for a Thermaltake 850. Can't beat that :)


Just maybe, NewEgg has their Rosewill 1000watt, 80 plus cert, with 3 year warr.
On sale normally $149.99, and now $59.99.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182188&nm_mc=EMC-IGNEFL110111&cm_mmc=EMC-IGNEFL110111-_-EMC-110111-Index-_-PowerSupplies-_-17182188-L01D

Profile razamatraz
Send message
Joined: 23 Oct 07
Posts: 142
Credit: 27,807,059
RAC: 0
Canada
Message 1169648 - Posted: 10 Nov 2011, 2:55:12 UTC

I've only killed one, and it was an Enermax Revo 850. Not sure I actually killed it should have been only around 600 Watts, but it did die.

Message boards : Number crunching : Killed a 525W PSU, throwing a 850W at SETI@home

Copyright © 2014 University of California