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26-Jan-2006, 02:56
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#1 |
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God of Wicked Games
Join Date: Jun 2002
Posts: 2,900
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7800GT power draw?
Anyone know how many amps a typical 7800GT needs from your 12V rail?
EVGA says you need a 450PSU and an evga rep says ya need 18 amps on each your for 12V rails but I'm pretty sure that's overstated for people you buy cheapy PSUs.
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Ice109: I had never truly known the meaning of "so happy i just pulled out my d**k and started beating it" until right then |
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26-Jan-2006, 03:08
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#2 |
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Senior Member
Join Date: Jul 2004
Location: NY, NY
Posts: 2,680
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was on a 350 till last month worked fine, it had 15.5 amps on the 12v rail
Thermaltake slient purepower |
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26-Jan-2006, 03:23
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#3 | |
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God of Wicked Games
Join Date: Jun 2002
Posts: 2,900
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Quote:
I wish I had an induction ammeter.
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Ice109: I had never truly known the meaning of "so happy i just pulled out my d**k and started beating it" until right then |
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26-Jan-2006, 09:47
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#4 |
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Member
Join Date: Sep 2003
Location: Transsylvania
Posts: 151
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Well, I did experince a strange thing: I have a 550 Enermax Noistaker with two 12 V rails one for the mobo-CPU, and one for an optional videocard.
Those two are good for 33A. Firstt time I had my Radeon X1800 XT installed, I did use the 12 V 6 pin adapter given with the card, using a normal HDD connector, and the card started to beep under heavy load. After that I did remember that I hava dedicated rail for the VGA so I used that, and the beeping issue was reduced a lot. (did not disappear totally) Of course a X1800 XT is more power hungry than a 7800 GT, still, I have the impression that today graphics monsters need special attention in this departament.
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Next stop, Wonderland. |
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26-Jan-2006, 10:15
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#5 | |
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Senior Member
Join Date: Apr 2004
Location: UK
Posts: 1,474
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There seems to be some kind of conspiracy to over-state power consumption nowdays. It's hard to read a forum where people are screaming you need 600W PSU's for even the most basic rigs. Most systems need nothing like this. 400W is usually sufficient for anything bar SLI/Crossfire systems unless you are an extreme overclocker with lots of discs.
Quote:
http://www.anandtech.com/video/showdoc.aspx?i=2496&p=10
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"We are all atheists about most of the gods that humanity has ever believed in. Some of us just go one god further." - Richard Dawkins |
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30-Jan-2006, 04:54
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#6 |
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God of Wicked Games
Join Date: Jun 2002
Posts: 2,900
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So do you tink an atx 1.3 420 enermax noisetaker watt psu with 15 amps for the cpu and 14 for the accessorcies with a 3200+ winchester, msi neo4-f, 3 hdds 1 dvd writer should work fine with my 7800gt?
The thing is that it shuts off when I'm in 2d mode idling so I shouldn't be pulling a whole lot of power. Either the 6 pin adapter has a shit load of resistance (not likely), I have a dud PSU, or my mobo is the cupret. My dad got me a PSU on his way home from work but it'a an allied  500 watt rated at 20amps on it's single 12V.It has a 20+4 pin connector,, Sata connectosr but no pci-e power connector... atx 1.2/atx 1.3 hybrid? Pushing all common sense aside I've conneced the 60 doller "500 watt" psu which, based on specs, has most of those 500 watts on the 5V rail.. 52 amps vs 32 for my enermax. It's too bad I don't have a PSU tester like this site does http://www.slcentral.com/dual-12v-ra...tout/index.php I'm running P95...
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Ice109: I had never truly known the meaning of "so happy i just pulled out my d**k and started beating it" until right then Last edited by Moloch; 30-Jan-2006 at 05:49. |
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30-Jan-2006, 06:49
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#7 |
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Member
Join Date: Sep 2003
Location: Transsylvania
Posts: 151
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I am confused. I have an 350 MvA APC UPS, I have PowerChute installed, it reports 143 W consumption in 2D. After 10-15 minutes of playing the system shuts down, the battery is completely depleted ...
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Next stop, Wonderland. |
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30-Jan-2006, 06:55
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#8 | |
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God of Wicked Games
Join Date: Jun 2002
Posts: 2,900
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Quote:
I am a UPS noob never saw a need for them since I dont run a server.
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Ice109: I had never truly known the meaning of "so happy i just pulled out my d**k and started beating it" until right then |
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30-Jan-2006, 07:34
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#9 |
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rwaaaraararagh
Join Date: Feb 2004
Location: beaver
Posts: 14,048
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I've got an SLI 7800GT rig that ran fine with 18A on 12V.
 edit: "ran" because I've put the second card in another rig for the time being. Last edited by AlStrong; 30-Jan-2006 at 07:37. |
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30-Jan-2006, 09:08
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#10 |
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God of Wicked Games
Join Date: Jun 2002
Posts: 2,900
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well since the only thing the allied PSU has on my old psu is a much higher 5V I think perhaps my MOBO likes the 20+4 pin connector, although it says it's compatible with 20 pin connectors.
I'm wondering an adapter will help.. return PSU and get adapter and see what's up 
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Ice109: I had never truly known the meaning of "so happy i just pulled out my d**k and started beating it" until right then |
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30-Jan-2006, 17:01
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#11 |
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Entirely Suboptimal
Join Date: Mar 2003
Location: WI, USA
Posts: 6,867
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I'm running a dual core Opteron @ 2.6 with a X850 XT. 475W Enermax PS. I own a Killawatt AC ammeter and have found that with absolute total load running Prime and ATITool that I hit about 280W AC power usage.
So, yeah, considering at best 80% efficiency between AC and DC (internal power usage will be lower), my powersupply is more than enough for this rig. SLI would need more probably, but not by much. I don't really understand the jock attitude over 500W+ supplies. Bigger is better is human nature I suppose, and definitely beats out a little empirical evidence. LOL. |
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30-Jan-2006, 18:44
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#12 | |
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God of Wicked Games
Join Date: Jun 2002
Posts: 2,900
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Quote:
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Ice109: I had never truly known the meaning of "so happy i just pulled out my d**k and started beating it" until right then |
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30-Jan-2006, 18:54
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#13 | |
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Senior Member
Join Date: Jul 2004
Location: NY, NY
Posts: 2,680
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Quote:
opps sorry missed this thread for a while  at the time I had a 3500+
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30-Jan-2006, 19:15
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#14 | |
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God of Wicked Games
Join Date: Jun 2002
Posts: 2,900
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Quote:
I'm using a mobo with an atx 24 pin connector with a 20 pin connector psu cuz MSI says it's compatable with 20 pin connectors. When I first saw that I knew I was going to have problems...
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Ice109: I had never truly known the meaning of "so happy i just pulled out my d**k and started beating it" until right then |
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30-Jan-2006, 19:21
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#15 |
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Senior Member
Join Date: Jul 2004
Location: NY, NY
Posts: 2,680
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hmm Asus A8N-E at the time I think, actually went through 3 motherboards and 3 power supplies with that graphics card, got a bunch of free stuff so I just did a hand me down with family members
 It was definilty a 24 pin don't remember of the power supply had to have a converter or not though. Last edited by Razor1; 30-Jan-2006 at 19:27. |
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30-Jan-2006, 23:41
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#16 |
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God of Wicked Games
Join Date: Jun 2002
Posts: 2,900
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Well as of yesterday I have 6 days to return the PSU.. so I'll just use it till the weekend and then I was looking at the noisetaker 480 2.0 and then when I sell my old sys ill get a nice case.
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Ice109: I had never truly known the meaning of "so happy i just pulled out my d**k and started beating it" until right then |
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31-Jan-2006, 00:00
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#17 | |
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Entirely Suboptimal
Join Date: Mar 2003
Location: WI, USA
Posts: 6,867
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Quote:
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