GF6800 cooling

Butcher · 01-19-2005, 07:50 AM

I need some suggestions on GPU cooling for 6800GTs. I've seen a few commercial blocks, of which only the danagerden looked reasonable.
Problem is, I have an SLI setup, so I need something I can route tubes out of without hitting the other card. On the DD, that means refitting it with 90 degree elbows (and even then it'd probably be tight), which I'd prefer not to do.

So does anyone know of any other products for dual 6800 cooling? I've not really got the time to DIY much up, so something prebuilt would be better. The system is 1/2" ID, currently have eheim 1250, heater core and MCW6002 in the loop. Alternatively if someone has time on their hands and wants to mill me some custom hardware, I'll pay reasonable material, work and shipping expenses.

Also, would prefer a gpu+ram solution, rather than just cooling the core.

pdf27 · 01-19-2005, 11:07 AM

Cool the core only with water and run a heatpipe from the RAM to the side/top of the WB?

Butcher · 01-19-2005, 11:35 AM

Then I'd need heatpipes and such, that's even harder to arrange.

pdf27 · 01-19-2005, 03:05 PM

Probably not that difficult - buy one in the right size, bend it roughly by hand to shape and attach it with thermal epoxy to the side of the waterblock.
I'm thinking about doing the same sort of thing as a way of cooling the NForce4 SLI chipset silently if/when I get a MB with it on - small copper block with a cutout for the heatpipe to be epoxied in, and run the heatpipe to the rad at the front of the case. Probably not actually that much work, and has the advantage that it would be properly quiet and reliable (unlike tiny MB fans!)

quicksilverXP · 01-19-2005, 03:32 PM

I'd go either with Koolance's new block or Aquacomputer's block. They both have rotational nozzles and, if plumbed correctly, can offer enough performance.

Or... this guy makes his own waterblocks.. perhaps you can ask for customizations.
http://www.xtremesystems.org/forums/...ad.php?t=50423

Butcher · 01-19-2005, 06:12 PM

They are 1/4" ID blocks, I really need something with decent sized fittings.

BTW, I can't view that thread.

Etacovda · 01-19-2005, 11:35 PM

Why not have a 1/4" loop, and a 1/2" loop - it'll make routing easier, and your performance will probably be better (esp if you use larger rads)

PaulDriver · 01-20-2005, 07:59 AM

http://theinquirer.net/?article=20808

msv · 01-20-2005, 08:52 AM

Quote:

Originally Posted by PaulDriver

http://theinquirer.net/?article=20808

Looks like pretty small tubes, maybe the hoses can be replaced.
regards
Mikael S.

Butcher · 01-20-2005, 10:36 AM

Quote:

Originally Posted by Etacovda

Why not have a 1/4" loop, and a 1/2" loop - it'll make routing easier, and your performance will probably be better (esp if you use larger rads)

Rather stick to single loop - 2 loops just uses too much space.

Butcher · 01-25-2005, 06:32 AM

Been thinking about this some more.
Had some thoughts of modding the DD block by attaching (either solder or epoxy) a brass/copper block over where the barbs are which I can use to effectively make a right anglebend in the outlets with. I can then drill + tap the ends of that and refit the DD barbs.
Comments?

dima y · 01-25-2005, 10:20 AM

go here, $160 for a set:

http://www.xtremesystems.org/forums/...t=49924&page=1

Butcher · 01-25-2005, 10:32 AM

Sweet, thanks, sent him a PM about them. They look like a much better solution than modded DDs.

lockheed · 01-25-2005, 03:42 PM

I wouldn't go for the DD block. Just did a review of it here: http://www.overclocking.dk/litteratu...3549&type=test

I know it's in danish, but there is an UK summary at the end here: http://www.overclocking.dk/litteratu...3550&type=test

Basically i was very dissapointed in the NV8 block, as is a lot of our users who have the block. It simply doesn't give you your moneys worth. I am currently waiting for an answer from DD as to how the temperature problems with the NV68 can be fixed.

Best regards

Butcher · 01-25-2005, 06:39 PM

Well the ram runs hot on 6800GTs - it usually has active cooling - so I'd rather have it covered by the block than sticking heatsinks on and hoping.

Butcher · 02-03-2005, 06:24 PM

Got some blocks for it:

Looking forward to see how these do.

ferdb · 02-03-2005, 06:59 PM

I used a Swiftech MCW-50 block on my 6800GT and it works fine. The stock air cooled heatsink comes in 2 parts, one for the GPU and the other part for the memory. I removed the GPU portion and put the memory sink back. There is sufficient airflow in my case to cool the video ram with that heatsink in place.
The system is a 3/8" ID loop.

Ruiner · 02-04-2005, 09:54 AM

Quote:

Originally Posted by ferdb

I used a Swiftech MCW-50 block on my 6800GT and it works fine. The stock air cooled heatsink comes in 2 parts, one for the GPU and the other part for the memory. I removed the GPU portion and put the memory sink back. There is sufficient airflow in my case to cool the video ram with that heatsink in place.
The system is a 3/8" ID loop.

How did you attach it? Do the stock holes line up?

ferdb · 02-05-2005, 10:46 AM

The stock mounting that comes with the MCW-50 works fine. I didn't have to mod anything.

Wang · 02-21-2005, 08:14 PM

Quote:

Originally Posted by ferdb

The stock mounting that comes with the MCW-50 works fine. I didn't have to mod anything.

I hope you can answer ferdb..........

re: Swiftech's site..... 6800, 6800U needs the nv40 kit.....

perhaps you have a 6600GT?

I've been quite indignant over the price charged for an adapter kit...
aprox. 1/2 the price of the block itself!! ('tho the kit looks complete)

The only piece that looks to be required.. is the 6-hole adapter plate!

I had the MCW50 on my 9700, my donated Ultra needs W/Cing.
If I had the means, I'd machine my own.... but I am Po'
I'll have to bite the bullet i guess.

thanx for any update ferbd.

ferdb · 03-01-2005, 09:18 AM

I have a 6800gt, bought the appropriate adapter kit from swiftech for it.

Wang · 03-01-2005, 04:24 PM

Quote:

Originally Posted by ferdb

I have a 6800gt, bought the appropriate adapter kit from swiftech for it.

Ah, ok thanx for that ferdb. I thought I was loosing it!
I ordered the nv40 kit.... (rubbing hands... waiting)
I'm also going to use the stock Ultra ram cooler, I hope it's up to task.

OT: I'm running supa ghetto, toilet paper tube winter air ducting to the 6800 Ultra's fan intake... very cool

I was running an AT and ATX P.S. Finally got a OCZ470 PowerStream!
On cold air... she's doing 460core 1200mem, I hope water-cooling will bring the core speed up. I'm too chicken to push it harder on air.

coolmiester · 03-05-2005, 01:31 PM

Bit late for this but i got a bit of a work in progress on a couple of NV-68 blocks which are looking promising for an Asus board with the wider gap between the Sli slots

Looks like Danger Den are gearing up to sell them if all goes well.

>>Full Log Here<<

Jam · 03-05-2005, 01:45 PM

I just acquired a set of NV-68 A8N full-board coolers from Danger Den

A bit pricey, relatively speaking, but one can see where one's money went by holding them in one's hands.

The system is presently under constructon, but getting close to completion so I do not have any results to report.

Cheers,

Joe

Blackeagle · 03-06-2005, 06:00 PM

Quote:

Originally Posted by Jam

I just acquired a set of NV-68 A8N full-board coolers from Danger Den

A bit pricey, relatively speaking, but one can see where one's money went by holding them in one's hands.

The system is presently under constructon, but getting close to completion so I do not have any results to report.

Cheers,

Joe

I hope you'll post back soon with full details of the performance you got from these blocks. I do like how the barbs are arranged, really reduces total line length & bends.

The blocks themselves however still look pretty restrictive.

01-19-2005, 07:50 AM	#1
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	GF6800 cooling I need some suggestions on GPU cooling for 6800GTs. I've seen a few commercial blocks, of which only the danagerden looked reasonable. Problem is, I have an SLI setup, so I need something I can route tubes out of without hitting the other card. On the DD, that means refitting it with 90 degree elbows (and even then it'd probably be tight), which I'd prefer not to do. So does anyone know of any other products for dual 6800 cooling? I've not really got the time to DIY much up, so something prebuilt would be better. The system is 1/2" ID, currently have eheim 1250, heater core and MCW6002 in the loop. Alternatively if someone has time on their hands and wants to mill me some custom hardware, I'll pay reasonable material, work and shipping expenses. Also, would prefer a gpu+ram solution, rather than just cooling the core. __________________ Once upon a time, in a land far far away...

01-19-2005, 11:07 AM	#2
pdf27 Cooling Savant Join Date: Jan 2004 Location: Horsham, UK Posts: 140	Cool the core only with water and run a heatpipe from the RAM to the side/top of the WB? __________________ Member of the paramilitary wing of CAMRA

01-19-2005, 11:35 AM	#3
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	Then I'd need heatpipes and such, that's even harder to arrange. __________________ Once upon a time, in a land far far away...

01-19-2005, 03:05 PM	#4
pdf27 Cooling Savant Join Date: Jan 2004 Location: Horsham, UK Posts: 140	Probably not that difficult - buy one in the right size, bend it roughly by hand to shape and attach it with thermal epoxy to the side of the waterblock. I'm thinking about doing the same sort of thing as a way of cooling the NForce4 SLI chipset silently if/when I get a MB with it on - small copper block with a cutout for the heatpipe to be epoxied in, and run the heatpipe to the rad at the front of the case. Probably not actually that much work, and has the advantage that it would be properly quiet and reliable (unlike tiny MB fans!) __________________ Member of the paramilitary wing of CAMRA

01-19-2005, 06:12 PM	#6
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	They are 1/4" ID blocks, I really need something with decent sized fittings. BTW, I can't view that thread. __________________ Once upon a time, in a land far far away... Last edited by Butcher; 01-19-2005 at 06:31 PM.

01-19-2005, 03:32 PM	#5
quicksilverXP Cooling Neophyte Join Date: Jun 2004 Location: Irvine Posts: 58	I'd go either with Koolance's new block or Aquacomputer's block. They both have rotational nozzles and, if plumbed correctly, can offer enough performance. Or... this guy makes his own waterblocks.. perhaps you can ask for customizations. http://www.xtremesystems.org/forums/...ad.php?t=50423

01-19-2005, 11:35 PM	#7
Etacovda Cooling Savant Join Date: Feb 2004 Location: Dunedin NZ Posts: 735	Why not have a 1/4" loop, and a 1/2" loop - it'll make routing easier, and your performance will probably be better (esp if you use larger rads) __________________ Hypocritical Signature I tried to delete: Procooling: where scientific principles are ignored because big corporations are immune to mistakes and oversights.

01-20-2005, 07:59 AM	#8
PaulDriver Cooling Neophyte Join Date: Oct 2004 Location: Sin City Posts: 37	http://theinquirer.net/?article=20808 __________________ Athlon 64 3000+ (Venice) @ 2.4Ghz (267x9) stock vcore on a ChainTech VNF4 Ultra (7-19 BIOS) Kingmax 512MB DDR 466 x2 @ 480MHZ 7-3-3-2.5-1T, GeForce 6600 PCI-Express 1 160GB, 1 80GB, 4 200GB (on SATA) and 1 DVD Dual writer All housed in a circa 1997 inwin case hacked into the flipped BTX style Air cooled, First time since 2001. It's not noisy, what's wrong?

01-25-2005, 06:32 AM	#11
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	Been thinking about this some more. Had some thoughts of modding the DD block by attaching (either solder or epoxy) a brass/copper block over where the barbs are which I can use to effectively make a right anglebend in the outlets with. I can then drill + tap the ends of that and refit the DD barbs. Comments? __________________ Once upon a time, in a land far far away...

01-25-2005, 10:20 AM	#12
dima y Cooling Savant Join Date: Nov 2002 Location: palo alto, CA Posts: 164	go here, $160 for a set: http://www.xtremesystems.org/forums/...t=49924&page=1

01-25-2005, 10:32 AM	#13
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	Sweet, thanks, sent him a PM about them. They look like a much better solution than modded DDs. __________________ Once upon a time, in a land far far away...

01-25-2005, 03:42 PM	#14
lockheed Cooling Neophyte Join Date: Oct 2004 Location: Denmark Posts: 1	I wouldn't go for the DD block. Just did a review of it here: http://www.overclocking.dk/litteratu...3549&type=test I know it's in danish, but there is an UK summary at the end here: http://www.overclocking.dk/litteratu...3550&type=test Basically i was very dissapointed in the NV8 block, as is a lot of our users who have the block. It simply doesn't give you your moneys worth. I am currently waiting for an answer from DD as to how the temperature problems with the NV68 can be fixed. Best regards

01-25-2005, 06:39 PM	#15
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	Well the ram runs hot on 6800GTs - it usually has active cooling - so I'd rather have it covered by the block than sticking heatsinks on and hoping. __________________ Once upon a time, in a land far far away...

02-03-2005, 06:24 PM	#16
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	Got some blocks for it: Looking forward to see how these do. __________________ Once upon a time, in a land far far away...

02-03-2005, 06:59 PM	#17
ferdb Cooling Neophyte Join Date: Sep 2004 Location: texas Posts: 68	I used a Swiftech MCW-50 block on my 6800GT and it works fine. The stock air cooled heatsink comes in 2 parts, one for the GPU and the other part for the memory. I removed the GPU portion and put the memory sink back. There is sufficient airflow in my case to cool the video ram with that heatsink in place. The system is a 3/8" ID loop.

02-05-2005, 10:46 AM	#19
ferdb Cooling Neophyte Join Date: Sep 2004 Location: texas Posts: 68	The stock mounting that comes with the MCW-50 works fine. I didn't have to mod anything.

03-01-2005, 09:18 AM	#21
ferdb Cooling Neophyte Join Date: Sep 2004 Location: texas Posts: 68	I have a 6800gt, bought the appropriate adapter kit from swiftech for it.

03-05-2005, 01:31 PM	#23
coolmiester Cooling Neophyte Join Date: Feb 2004 Location: NE - UK Posts: 29	Bit late for this but i got a bit of a work in progress on a couple of NV-68 blocks which are looking promising for an Asus board with the wider gap between the Sli slots Looks like Danger Den are gearing up to sell them if all goes well. >>Full Log Here<< __________________ Coolercases UK - Danger Den Official UK Distributer paul@coolercases.co.uk

03-05-2005, 01:45 PM	#24
Jam Cooling Neophyte Join Date: Feb 2005 Location: Staten Island, New York Posts: 16	I just acquired a set of NV-68 A8N full-board coolers from Danger Den A bit pricey, relatively speaking, but one can see where one's money went by holding them in one's hands. The system is presently under constructon, but getting close to completion so I do not have any results to report. Cheers, Joe

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