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Old 07-26-04, 01:05 AM   #73
kahloq
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Join Date: Jun 2004
Posts: 1,256
Default Re: Power Supply / 6800 Series Sticky

Quote:
Originally Posted by r2d2d3d4d5
My 6800NU arrived yesterday.

Unfortunately I've had artefacts on the BIOS boot up screens as well as Windows.



Here are the specs of my current PSUs:

Q-Tec
"550W PSU"
+3.3V@20A (Max, (Peak=30A)
+5V@35A (Max, (Peak=40A)
+12V@14A (Max, (Peak=20A)

AOpen
300W PSU
+3.3V@28A
+5V@30A
+12V@15A
(+3.3V&+5V=180W Max)
(+3.3V&+5V&+12v=280W Max)
Both of these power supplies are insufficient. The +12 on the Q-tec is only 14a(even tho peak is 20a peak is NOT a sustained lvl, but peak..ie maximum at one time)
The Aopen also is too low as the +12 is only at 15a. You need a PSU that carries at least 18a on the +12(and not just a peak rating but sustained).
Wattage of a PSU isnt the tell tale sign that its a good performer. AS you said the q-tec is a 550 watt PSU but it cant carry the load. I have a 420 watt PSU, but its +12 rail is 18a sustained.
__________________
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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