On 15 Apr 2004 02:26:53 -0700, (Nada) wrote:

(John Lewis) wrote:
On Thu, 15 Apr 2004 15:12:17 +1200, wrote:




Plus were are you going to put all the HEAT that this Crap card generate, as
it blows into the Case..


Please read my original posting again.

According to Tom's hardware the 5950/9800XT are about 90 watts max.
for the board.

According to nVidia, 110 watts max for the 6800 board. The NV40 chip
dissipates about 25 watts more than NV35/R350, the DDR3 memory a
little less than DDR1 ( 256Mbyte). Also, according to the Xbit lab
review, the 6800 fan never got to full speed in their test setup.
Anyway, you only need to get rid of 25 watts more heat. The power
supply requirement comes from the need for a very low power-line
impedance at the card, combined with the fact that there is a wimpy
12v supply on many sub-400watt power-supplies. Remember that the
fastest CPUs consume about 8 amps already from the 12volt supply.

John, you wouldn't happen to have a link to a Intel Pentium IV Prescot
power consumption test sites? I heard those models produce more watts
than HAL2000. This is going to create mass hysteria with upgrading
the power supplies again.

Yes, indeed and it should be a permanent bookmark for anybody
building Intel-based PCs or trying to find a particular mask rev of
a processor.

http://processorfinder.intel.com/scripts/default.asp

Pick your processor. Click on the appropriate SL code and bingo...
all the important shortform infomation on mask version, wattage, max
operating core temp etc. For example, note that the P4EE is spec'd
for a max core temperature of 64 degrees C only. Doesn't mean
that it will stop working at 65, but it might slow down a little....

Prescott 3.4 is 103 watts max
Northwood 3.4 is 89 watts max.

For reference the whole nVidia 6800Ultra board has a maximum
dissipation of only 110 watts Compared to the block heatsinks of
the processors, the nVidia reference thermal solution is huge (and
apparently very quiet ). I'll take huge and quiet any day...

BTW, the weight of the 6800Ultra is no greater than the 5950U, since
the heatsinking is all aluminum. I suspect that some of the
vendors of Nvidia cards (MSI and Leadtek come to mind ) will
replace the aluminum with copper to get the Ultra height down.
Beware of the weight of a copper thermal solution.... No matter what
solution is adopted, the PCI space next to the 6800 or 680 Ultra
should be always left completely free for adequate ventilation, unless
the alternate solution vents directly through the rear -- and with the
2 large DVI connectors that will be very difficult to do effectively
in a 1-slot space.

John Lewis