sick G400 question...

[GirgleMirt]

anyone knows how much power does a G400 uses??

I want 2 add a peltier to my system but I'm not sure if my puny 250W power supply can handle the extra load.

so anyone knows the Electrical specifications of the G400? (32 megs, vannilla model oc'd 2 MAX) Couldn't find in on Matrox's site so askin here

Thanks!

[CrazyBee]

why do you want to add a peltier? youll need cooling for the peltier PLUS the chip.. so.. a 12v peltier at 5 amps (60watts) will need a heatsink that can dissapate 120watts, PLUS.. whatever the chip is creating..

i had one for my celeron 366 bringing it upto 566.. other than consume more power and make all kindsa heat that I had to keep cool.. it diddnt do a damn thing.

stick to a massive heatsink with many fans.. its cheaper and just as effective.

[GirgleMirt]

already got a massive fan/heatsink (GlobalWin cpm52.. don't know code by hearth)

want too break the 600 barrier, with present cooling my Celery 366 is at 550, and the price of a peltier (20 bucks) is not a lot compared to an alpha heatsink/fan combo (50 bucks) or a 600MHz processor (250$ for P3 or 175$ + mobo for Athlon)

[impact]

When going for the 550 barrier with a 366, is it better to have a passive heatsink + fan(s) or regular all in one that is ment up to 600 MHz?

[Dyre]

I wouldnt risk using a pelt for such a small gain personally, but back to your question. I would get anouther Powersupply. I wouldnt even run the pelt on the same powersuplly if it was a 300 or 350 watt, unless the powersuplly put out some masive amps....

Your best bet is to find a 235 or 250 watt AT supply and run the pelter off that..

[CrazyBee]

few celerons make it past 600MHz.. mine will POST to 616 but hangs at windows.. my RAM is stable to 133MHz at CAS2 and 150MHz at CAS3.

but.. like I said, VERY FEW make it upto and past 600MHz even at max voltage with decent cooling. i mean.. yeah.. if you invest in a peltier and have water cooling and all that you might be able to keep the chip cool enough to do that, but, with the investment required tokeep a peltier cool enough for that its not worth it for the celeron chip.

like I said before.. you need cooling for the peltier PLUS the chip.. have you even felt the heatsink on a Celeron 366 at 616? Its frickin' hot!! I have a heatsink on mine that is 6" wide, 4" high, 4" deep, with 4x5000RPM (19CFM each) fans (2 in and 2 out).. at 616 at 2.3v it got HOT.. and normally, at 2.1v my CPU is 5 degrees above room temp.. oh yeah.. my case has 2 45 CFM fans blowing in and 2 of the same blowing out, plus, the PS fan..

so.. a peltier just wont do it.. youll need water plate on it to get rid of the heat, to a radiator, to a pump, and pump it back through.. and, how much is that gonna cost? like, $100 for the hardware, tubes, radiator, and water plate.. then the peltier, than the pump..

I tried a peltier with my heatsink/fan combo in my case and it got way hot to just keep my Celeron at 566.. i can only imagine even more heat from the peltier at 616...

if you want more than 600.. buy a PIII600E and run at 133FSB and youll have like 800MHz thats way way fast and itll have the extra instruction set so your G400 will run even faster.

[GirgleMirt]

I shee..

oh, below 4amps 12-14Watts for the G400 series says a moderator on Matrox's forum.

But dude, the way you're describing things it seems the peltier will add heat instead of cooling things down... Won't the processor run a lot cooler with a peltier?!?! I mean the Peltier transfers the heat from the cpu to the heatsink, maybe add a few degrees to the heatsink due to the electric current passing thru it but it won't be that bad..

yeah, came 2 the same conclusion about the PS.. might look for a used one and save some $$..

[dneal]

Well, I actually hooked up a peltier to my G400 a while back (hehehe). From that experience let me say I will NEVER mess with them again.

A peltier does not simply transfer heat. It produces A LOT of heat on it's own. That's way it sucks so much power. It is almost impossible to keep a peltier cool enough without water cooling, etc. a 60-watt peltier adds 60 watts of heat to the system plus the CPU's heat.

Peltiers are not low-maintenance. You have to keep an eye on them every once in a while. If dust collects on the heatsink it may overheat, if the heatsink's fan dies you are totally screwed.

IMO, don't bother with peltiers. Get a high-end Alpha cooler for your Celeron. That will cool it wonderfully.




------------------
ABIT BF6, Pentium III SL35D 450MHz -> 630MHz, 192MB PC100 SDRAM @ 140MHz, Toshiba 6X DVD,
Matrox Millenium G400 DH @ 160/200, Creative SBLive Value, 3Com Fast Etherlink XL PCI
Supermicro SC701A ATX 300watt TurboCool PC Power & Cooling PS, Panasonic Panasync S17

[Muad'Dib]

And let's not forget, if you put the pelt on a seperate ps, turn that one off when you're done with the cpu. DO NOT let it run overnight once your system is off..... I have a friend who did that once ... it created some colors on his chip I didn't know existed (although I'm not quite sure why).....

Dimitri