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Old 08-30-04, 12:21 PM   #181
THX152
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Default Re: GeForce 6800 power supply questions

I thought the PSU might be too low myself, but the clean Antec power and a non Ultra really should be OK. I did some additional research and found an article at Ars that mentioned RAM as a possible cause for spontaneous reboot. I didn't even give second though to the REFURB 2nd stick I just bought! Ack.

Sure enough, I pulled the RAM and was able to play D3 and FarCry without a single problem (slower load times minus the ram of course). So as it stands, it looks as though the refurb RAM was the culprit.

My $0.02, dont bother with refurbs. Sure they are 10-20 bux cheaper but not worth the hassle. Oh well. RMA in process.

Thanks guys. The 6800 cards are in a word, amazing! I'm having a blast.

THX152
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Old 08-30-04, 02:49 PM   #182
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Default Re: GeForce 6800 power supply questions

Quote:
Originally Posted by azanon
How will i do with an ultra, using a PC Cooling & Power supply Turbo-cool 350 ATX. It does 15A on the +12V, but its "supposedly" a higher quality PS (cost me 100 bucks). When i bought it a year ago, i thought i was insane to pay that since you could get a generic for 15-25 bucks. Now, even that one isnt good enough???

BTW, is the 18A on +12V "consensus" coming out of folks asses, or did nvidia say that? No offense intended.
That consensus is from the various add-in board makers as well as most review sites. Originally, Nvidia had the power requirement at a 480 watt PSU, but lowered that to 350watt with 18a on the +12.

But, there have been some instances where ppl have reported that it could be run on a 350 watt with less then 18a. However, that depends on how much stuff you got in your case as well. If you don't plan on overclocking much, you should be fine hopefully. You got a very good quality PSU so it probably will be ok. Wanted to also say tho, that I had a 420 watt PSU(thermaltake) and did get the low power warning message a couple times and that WAS rated at 18a on +12, BUT, I have alot of stuff in my case as sigs shows. I upgraded to OCZ 520 with 33a on +12. If you dont have alot of stuff, your 350 should be ok.
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SPECS:
Alienware
3.4 p4 /200FSB NO overclock
OCZ pc3500 performance 2 gig memory
OCZ 520 watt PSU
Asus p4c800deluxe-e motherboard
2 x 80g Sata HD's / 1 x 60g IDE / 1 x 40 g IDE
1 x DVD / 1 x lite on cdrw
7 case fans plus vantec dual fan pci card
BFG 6800 Ultra OC 456/1.28 Stock air
3.2P4(no OC)3dmark03 score :13570
http://service.futuremark.com/compare?2k3=3195131
3.2 p4 @3.472 217FSB 6800u@ 425/1.28 3Dmark03: 13738
http://service.futuremark.com/compare?2k3=3195221
WIFES PC: 3.2P4/BFG 6800GT/1 gig pc 3200
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Old 08-30-04, 03:08 PM   #183
azanon
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Default Re: GeForce 6800 power supply questions

Quote:
That consensus is from the various add-in board makers as well as most review sites. Originally, Nvidia had the power requirement at a 480 watt PSU, but lowered that to 350watt with 18a on the +12.
That seems a little misleading cause I have to wonder, are there any 350watt PS that even put out 18a on the +12v? I have to ask that cause my expensive 350watt only puts out 15a.

I'm running a Asus P4P800, 3.06 northwood HTT P4, 533mhz bus, 1024mb ram, one IDE 7200rpm drive, audigy sound, 52x CD, one floppy, a printer, a USB MS intellimouse, and USB zip250m, just one additional 80mm case fan. I also have everything routed through a 1200va belkin UPS (does that help this? :-) )

I already checked my free molex connectors. I'll be able to have one totally free, and the second only have the smaller connector to the 3.5 floppy. So, more or less, i will have two dedicated molex connectors available.

I guess in the absolute worst case scenario, I could just downclock a 6800 ultra to GT speeds, and have 2 molex's supporting the card; which should be even better scenario than a 6800 gt due to the 2nd molex.
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Old 08-30-04, 03:31 PM   #184
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Default Re: GeForce 6800 power supply questions

Forgot pccooling&power supply bases their specs off of 40 degree Celsius environment whereas "the other guys" use 25 degrees Celsius. Maybe i'll be ok.
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Old 08-31-04, 11:58 AM   #185
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Default Re: GeForce 6800 power supply questions

Hello, I have a BFG 6800U Oc on the way and im currently running a antec 380W truepower. It does 18A on the 12v rail. I was wondering whether I can run the card for a few months till I upgrade the PSU. Thanks
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Old 08-31-04, 02:22 PM   #186
azanon
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Default Re: GeForce 6800 power supply questions

Why do we even have to deal with this issue? AGP Pro has been out for some time, but for some reason, a good many of the mainstream boards still dont have it, and i assume consequently nvidia isnt making an AGP Pro variant of the 6 series G-forces.

Seems i recall an AGP Pro slot can pump out up to 4 times the power of a standard AGP slot.
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Old 08-31-04, 04:20 PM   #187
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Default Re: GeForce 6800 power supply questions

Good question. My ASUS mobo has an agp pro slot yet my beefy-yet-crippled 6800ultra only comes in AGP standard.
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Old 08-31-04, 09:12 PM   #188
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Default Re: GeForce 6800 power supply questions

Quote:
Originally Posted by azanon
Forgot pccooling&power supply bases their specs off of 40 degree Celsius environment whereas "the other guys" use 25 degrees Celsius. Maybe i'll be ok.
Wanted to let you know that OCZ also posts their rated specs at a 40c environment. You are right tho, 99% of all PSU makers list their specs off a 25C temp reading. Very misleading IMO.

You cant go wrong with OCZ or PCp&c
__________________
SPECS:
Alienware
3.4 p4 /200FSB NO overclock
OCZ pc3500 performance 2 gig memory
OCZ 520 watt PSU
Asus p4c800deluxe-e motherboard
2 x 80g Sata HD's / 1 x 60g IDE / 1 x 40 g IDE
1 x DVD / 1 x lite on cdrw
7 case fans plus vantec dual fan pci card
BFG 6800 Ultra OC 456/1.28 Stock air
3.2P4(no OC)3dmark03 score :13570
http://service.futuremark.com/compare?2k3=3195131
3.2 p4 @3.472 217FSB 6800u@ 425/1.28 3Dmark03: 13738
http://service.futuremark.com/compare?2k3=3195221
WIFES PC: 3.2P4/BFG 6800GT/1 gig pc 3200
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Old 08-31-04, 09:13 PM   #189
kahloq
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Default Re: GeForce 6800 power supply questions

Quote:
Originally Posted by bizzoshaker
Hello, I have a BFG 6800U Oc on the way and im currently running a antec 380W truepower. It does 18A on the 12v rail. I was wondering whether I can run the card for a few months till I upgrade the PSU. Thanks

You should be fine as long as you DONT have a lot of other stuff in your case like 4 HD's etc.
__________________
SPECS:
Alienware
3.4 p4 /200FSB NO overclock
OCZ pc3500 performance 2 gig memory
OCZ 520 watt PSU
Asus p4c800deluxe-e motherboard
2 x 80g Sata HD's / 1 x 60g IDE / 1 x 40 g IDE
1 x DVD / 1 x lite on cdrw
7 case fans plus vantec dual fan pci card
BFG 6800 Ultra OC 456/1.28 Stock air
3.2P4(no OC)3dmark03 score :13570
http://service.futuremark.com/compare?2k3=3195131
3.2 p4 @3.472 217FSB 6800u@ 425/1.28 3Dmark03: 13738
http://service.futuremark.com/compare?2k3=3195221
WIFES PC: 3.2P4/BFG 6800GT/1 gig pc 3200
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Old 08-31-04, 10:27 PM   #190
bizzoshaker
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Default Re: GeForce 6800 power supply questions

ya, i barely have anything, cd-rom, 1hdd, cpu, mobo, ram, gfx card, and 2 fans
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Old 09-01-04, 10:27 AM   #191
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Default Re: GeForce 6800 power supply questions

Hey all-

I'll tell you my experience and maybe it will help someone...

I finally got my BFG 6800 Ultra OC on Monday night. I installed it.
Specs:
AMD 2800+ XP
Antec TrueBlue 430W (20A/12v)
2 ATA drives, 2 optical drives
Video card, sound card
5 case fans
1GB 400MHz memory

Install went well. I misconnected a power connection toa molex fan connector. I got the NV Sentinel warning. Click ok, shut down and flipped that molex to another rail. Rebooted and no sentinel message.

I play about 20 minutes of Neverwinter Nights and the game spontaneously drops to desktop. I start to get some graphical corruption on the desktop background picture. This was 11:30pm.

I called BFG Tech support, explain everything. He tells me to:
1) Change AGP apeture from 256 to 128MB.
2) Turn off FastWrites.
3) Up AGP voltage from 1.5 to 1.6v.

He said:
1) These issues can be hard to diagnose but...
2) Dropping out of programs usually means the power supply is the problem.
3) Graphical corruption usually can mean AGP voltage or Fast Write issue.

So, then after doing this I played about 20 minutes of multiplayer in my favorite server of UT2k4. No problems.

Yesterday, I played NWN and it dropped out after 20 minutes again. I know my power supply is dubious considering I bout an out-of-box overclocked card, so I am going to pick up the OCZ 520W.

HTH-
Mike
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Old 09-02-04, 01:51 AM   #192
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Default Re: GeForce 6800 power supply questions

I must say after some usage I am very happy with the Antec 480W Neo Power. It is a great supply. 2 12v rails, seperate connector for fans, and you only plug in the cables to the PS you need. Very nice indeed.
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