NVidia 6800 Custom/Homemade Heatsink... help!

startx · Nov 20, 2004, 01:40 AM

Anyone here who knows an idea how to put a custom heatsink on Nvidia 6800... I was planning to use an AMD heatsink and attach anything just to hold it in place

anyway, there is no one in the philippines that is supplying the NV 5 Silencer... anyone here knows beside nv5 that works with NV6800 heatsink...?

please help

marcus a64 · Nov 20, 2004, 08:36 AM

you need to be really careful, whatever heatsink you use must sit squarely on the chip and be firmly and securely attached or you'll not get good heat transfer from the chip to the heatsink.

Be sure and use silver thermal paste as well between the heatsink and the chip but be careful to only apply a very thin layer as there is potential for a short circuit if it gets on other components or parts of the board.

Maybe try an extra fan thats drawing cool air from outside the case and blowing onto the card first, probably a safer option.

startx · Nov 20, 2004, 09:17 AM

do i need a memory heatsink also?

marcus a64 · Nov 20, 2004, 09:58 AM

What brand and model card do you have, I have an Asus 6800 Ultra that i could not get working well until i installed another fan drawing cool air from outside and blowing straight onto the card, u need to be sure warm air is not recirculated over the card.

I believe the NV Silencer 5 has no RAM heatsinks, i'm a bit in the same position as you as this cooler is not available in my area either. It is mean't to be a very good unit from what i read.

Are you having problems that you think are heat related ??

startx · Nov 20, 2004, 10:52 AM

im having around 86 degree.... I added amd heatsink beneath it.... still having too much heat... I have air in my cpu...

I think I really need to get a Copper base heatsink...

Also: INNO3d 6800GT

marcus a64 · Nov 20, 2004, 11:00 AM

What type of case, how many cooling fans in the case.

In most circumstances you need fans at the front blowing cool air in and fans at the back drawing hot air out, side fans blowing in are a bonus to have as well.

Power supply with 2 fans can help as well, will help to draw hot air from the case and force it out.

Some cases even have a fan in the top.

Not sure if there are other coolers available for the 6800, 86 degrees is that after running games or graphics applications ??

startx · Nov 20, 2004, 11:13 AM

86 while running the game....

I have 5 fan... 2 in the side... 1 back 1 front 1 top... + 1 in the gpu blowing away ////

ColdPenguin · Nov 20, 2004, 05:19 PM

ideally you want the lower fans blowing air in and the top ones blowing air out for best cooling, because as we all know the hot air will want to rise above the cool air.

Open the side of your case or put your hand over the fans to make sure they're blowign the right way.

If you jut have a lot of fans sucking air in the wont be moving much air, the air pressure inside of your case is NOT going to build up, cool air is only going to go into your case at the rate the hot air is escaping. I remember when I was helping my friend build his new AMD64 comp, the case came with a rear fan high up above expansion slots, and it was screwed on blowing air in, had to switch it around to suck air out. LOL the power supply fan a few inches away was probably sucking a lot of that air right back out the case before I switched that case fan around.

anyway, if you're two side fans are low, like expansion card level (at least they are on another one fo my friends case), have those and the front fan blow air in, then have your rear and top suck air out, that should provide the best airflow assuming your power supply in the top rear also has a fan sucking air out.

marcus a64 · Nov 24, 2004, 03:57 AM

That does help alot.

I was having wierd problems with hanging/crashing with my Ultra until i got a new Antec case that has 2 fans low at front blowing in, 2 fans up under the power supply drawing air out, PS fan drawing air out and other fan as you said right at the height of the AGP port blowing air straight on the Graphics card, haven't had any trace of my problem since getting this case about 2 weeks ago.

I made the mistake also of under estimating how important the air flow was.

marcus a64 · Nov 24, 2004, 03:59 AM

Hi StartX

Check out www.megapc.com.au they may be able to mail order one of the card coolers NV5 Silencer over to where you are.

startx · Nov 24, 2004, 07:18 AM

thank you ill try to email them,

Philippines doesnt have any

**Asmoday** · Nov 24, 2004, 07:35 AM

Quote:

Originally Posted by marcus a64

I believe the NV Silencer 5 has no RAM heatsinks

Wrong, the NV Silencer HAS ramsinks...

startx · Nov 24, 2004, 09:35 PM

mega pc doesnt ship to philippines!!!!!!!!!!!!

PHILIpPINES! doesnt have ANY ARCTIC Nv5... THIS IS AWFUL!!!!!!!!!!!!11

marcus a64 · Nov 25, 2004, 03:14 AM

Okay as we now know it does have RAM heatsinks as well.

That still doesn't help you get one though !!

Is there not somewhere in the US that will freight to the Phillipines ??

I'm surprised the larger stores in Sydney and Melbourne won't send one over for you.

marcus a64 · Nov 25, 2004, 03:43 AM

StartX

Try going to www.staticice.com.au its a gadget search engine that list retailers offering the item you search for, and search for the NV5 on there, hopefully there is someone who'll mail order one for you.

Can you get Artic Silver Thermal paste??

A proper application of that onto your current components could drop the temp on a GT from 5 - 10 degrees C from what i've heard on the net.

startx · Nov 25, 2004, 10:45 PM

none

anyone here willing to help me?

phatrx7 · Nov 27, 2004, 09:46 PM

I have modd'd heatsinks on both my nVidia graphix cards.. on my 5900XT I have a "Athlon64" heatsink/fan .. it was the all aluminum one, so it was litewieght, and it cools my 5900XT too 26ºC (idle) / 33ºC (load).

On my 6800 (standard) .. I just went to eVGA.com's website and purchased an all copper 6800 Ultra heatsink and replaced the shorter aluminum one with it.. it was taller so I had to leave the fan/heatsink cover off, but it cools awsomely too.. my 6800 ran @ about 50ºC with it's default cooling setup, it now runs @ 43ºC with 6800 Ultra all copper heatsink & Arctic Silver 5.

I've modded plenty of Athlon heatsinks to fit nVidia graphix cards.. I usually buy an all copper "low-profile" socket "A" or Athlon64 heatsink (low-profile too) and mark 4 holes on the buttom that line up with the 4 holes around the GPU and drill them out.. I then use left over thermaltake screws (or tie wraps) and attach it to my videocard and they work wonders for cooling and over-clocking. Main thing to look for when buying a low-profile heatsink is it's weight.. then all ya need is a drill!

startx · Nov 28, 2004, 01:18 AM

could you post a modded 6800?

phatrx7 · Nov 28, 2004, 03:59 PM

You mean a SS of my 6800? It basically looks like a 6800 Ultra now, except w/o the fan-guard. My 5900XT is the one with the Athlon64 heatsink on it.. the 6800 just has a 6800 Ultra heatsink, which is a direct fit, it's just taller so that fan guard won't g0 back over it (unless I used spacers)

You can purchase these heatsinks here: http://www.evga.com/products/prod_list.asp?switch=4

They have (2) different types.. both are "direct fit" .. no modding needed, the GT copper heatsink will allow the fan-guard to fit back over on a standard 6800, it is the exact same size as the 6800 standards heatsink, it's just copper instead of aluminum.. the Ultra heatsink is direct fit too (screw holes line up), but it's taller, so that fan-guard can't be re-fitted. Both will cool better than the standard aluminum heatsink, but I'm not sure how much better the GT's will be since it's the same size and just copper.. It should do better than the aluminum tho since copper is a better thermal conductor. But the Ultra heatsink with longer fins made a g00d difference for me with some Arctic Silver 5 thermal compound.

Here's another thing I just purchased too: http://www.frozencpu.com/cgi-bin/frozencpu/vid-34.html

I placed that by my 6800 to blow (2) fans up on the Ultra heatsink, and (1) fan blowing from it's side.. and now my temps are @ 38ºC (idle).

If you're new to this.. I would recommend just paying $19.00 for the all copper Ultra heatsink and using some g00d thermal compound like.. Arctic Silver 5, Nanotherm XTC Silver, Nanotherm Blue, etc.. Then just remove the fan guard, then the heatsink.. clean the old thermal compound of the GPU (carefully) using rubbing alcohol / acetone (use a "damp" paper towel or cuetip or soft cloth .. do NOT get it soaking wet, and don NOT smear the old compound all over the place) Then just use a very small amount of thermal compound on the GPU.. you can take a new cuetip and spread it evenly across the gpu.. a very very thin layer! (To much compound can f00d stuff up). The just assemble it back together with the new heatsink.. it's a direct fit so no worries.. and just leave the fan guard off.

startx · Nov 28, 2004, 06:18 PM

THEY DONT SHIPPED To the Philippines