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Old 07-20-04, 11:02 PM   #1
UDawg
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Arrow GeForce 6800 power supply questions



Please post all your 6800 power supply questions in here.
The nVNews staff and member base will do their best to answer any questions and help clarify issues.
Thank you

Last edited by jAkUp; 12-13-04 at 01:58 AM.
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Old 07-21-04, 12:19 AM   #2
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Default Re: Power Supply stickie

Cool. I have a 150 watt PSU. It's a Dell. I've been running a BFG 6800 GT OC for a week or two now no problems so far. Someone said earlier when i asked that Dell rates its PSU's differently. Is there anyway to tell if the PSU isn't powerful enough? I took out my FD and modem to conserve power just in case.
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Old 07-21-04, 12:26 AM   #3
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Default Re: Power Supply stickie

That's my exact power supply up there , Antec 480 watt true blue. I'm having problems with it and my PNY 6800 Ultra. It says that the 12v line is rated at 22a max but when I have my CPU overclocked from 2.8 to 3.0 and my 6800 ultra oc'd to 425, my games lock up. When dropped down to stock, things run smooth as butter. I'm not too saavy when it comes to the whole overclocking experience but is it my power supply that is causing the problems with overclocking or are there any suggestions for settings I should use in my system bios (such as CPU Core voltage, AGP voltage, etc.) I want to overclock the CPU from 2.8 to 3.0 and the PNY 6800 ultra from 400 to 425.

Thanks
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Old 07-21-04, 12:40 AM   #4
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Default Re: Power Supply stickie

Quote:
Originally Posted by nvnews-reader
Cool. I have a 150 watt PSU. It's a Dell. I've been running a BFG 6800 GT OC for a week or two now no problems so far. Someone said earlier when i asked that Dell rates its PSU's differently. Is there anyway to tell if the PSU isn't powerful enough? I took out my FD and modem to conserve power just in case.
I am surprised it works at all, were you mistaken and meant the 250 watt? Those I know can handle alot. If your pc randomly restarts and such that should be a sign.
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Old 07-21-04, 01:27 AM   #5
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Default Re: Power Supply / 6800 Series Sticky

Nope its a 150.

I was afraid i'd have to buy a new psu but it doesn't look like it.
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Old 07-21-04, 01:33 AM   #6
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Default Re: Power Supply / 6800 Series Sticky

Sometimes I get the random "your card has downclocked because of not enough power" on my ultra, I have 2 dedicated molex connectors connected to it. It seems like that message only pops up when I accidently bump my table, or whenever the card wiggles around. It makes me uneasy at times when it does this. I have an enermax 475W.
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Old 07-21-04, 02:04 AM   #7
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Default Re: Power Supply / 6800 Series Sticky

the adapter that the EVGA card came with blew my cd rom and my HD, I'm tihnking it had something to do with my crappy PS.
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Old 07-21-04, 05:24 AM   #8
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Default Re: Power Supply / 6800 Series Sticky

Here Mine

Stealth Power Supply
Three double-ball bearing fans and three-speed temperature control switch balance cooling vs. noise level.
Unlike traditional power supplies, the Vantec Stealth Power Supplies are designed with a lightweight aluminum casing, and universal connectors fit most of branded motherboards.
Over current & voltage protection functions ensure the stability of your system.
The Vantec Stealth power supplies are reliable as well as easy to install, and compatible with most PC motherboards and systems.

Features
• Serial ATA Ready
• 3 Speed Fan Control Switch
• 3 Temperature Controlled Dual Ball Bearing Fans
• Universal Connector Fits Most Brands of Mainboard
• Additional AC Output
• Lightweight Black Aluminum Casing
• Electric-Shock-Free Protection
• Over Voltage & Current Protection
• Short Circuit Protection
• ATX 12 V
• Low Noise Level

Specifications
Input Voltage: 100-120VAC / 200-240VAC, 10/6A, 60/50Hz
Output Specifications
Voltage +3.3V +5V +12V -12V -5V +5Vsb
Max Current 26A 52A 28A 1.0A 0.8A 2.5A
Max Combined Wattage: 260W 336W 12W 4W 12.5W
500W 28W
Peak Load (60 sec.) 560W
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Old 07-21-04, 06:02 AM   #9
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Default Re: Power Supply / 6800 Series Sticky

Could we get a hands-on confirmation of how powerful a PSU the stock Geforce 6800 requires?

Just so those of us who are in the process of buying a whole computer would have a good orientation...
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Old 07-21-04, 06:51 AM   #10
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Default Re: Power Supply / 6800 Series Sticky

Quote:
Originally Posted by Iuris
Could we get a hands-on confirmation of how powerful a PSU the stock Geforce 6800 requires?

Just so those of us who are in the process of buying a whole computer would have a good orientation...
The actual W-rating (350, 430, 500, etc) doesn't matter as much as the fact that you want a power supply with a strong A-rating on the +12V line. For a 6800 GT, you will want a PSU with a rating of at least 18A, for a 6800 Ultra 20A would be ideal. Base your searches around that and you'll gain a much better idea of what works best with the 6800 lineup.
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Old 07-21-04, 07:01 AM   #11
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Default Re: Power Supply / 6800 Series Sticky

I was wondering if my Nexus NX-4000 PSU can handle a Geforce 6800 GT, or even better a 6800 Ultra? Specifications can be found here:

http://www.nexustek.nl/nx4000.htm

I know that its a pretty high quality PSU, but I just want to be sure. Can you help me out here?
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Old 07-21-04, 07:12 AM   #12
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Default Re: Power Supply / 6800 Series Sticky

A GT, probably but I think it would be a bit of a strain on the Ultra especially since it can't pull off a continuous load of 18A. Read what I said in my first post. I personally wouldn't take the chance, but you're always welcome to try.
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