6800 water block

[pcpro2]

is there a better water block than DD 6800 block

 

[centvalny]

Yes MCW50 Swiftech the reason is dual cooling copper block like DD NV68 absorbed more heat(b/c it's cooling GPUcore + MEMORy CHIPS and 8 of them).

 

[pcpro2]

wouldnt that allow for a better overclock on memory side

 

[cnick79]

I want to get the swiftech waterblock but what do you do about the memory not being cooled? I don't want to leave my chips naked.

 

[centvalny]

you can put vantec bga sinks

 

[pcpro2]

if u had the 6800 DD water block on its own loop wouldnt that be better than the MCW50 then... since the DD 6800 block cools the memory also
i fixing to buy and i want to make sure i get the right block here

 

[rtierney]

I want to get the swiftech waterblock but what do you do about the memory not being cooled? I don't want to leave my chips naked.

get copper ram sinks.
i used some vantec ones on mine and my memory can run about 40mhz higher than it did with just the crappy reference heatsink.

 

[pcpro2]

i have a hard time thinking the mcw50 will cool better than the DD6800 block with just heat sinks on the memory
is just a money thing is why u say go with the mcw50
i dont care about the money i just want the best possible cooling for the 6800 ultra i got
but if the mcw50 with the vantec heatsinks cool better than the DD 6800 ultra i will go with that but its hard for me to think that it willl

the DD6800 is 124.99 with 10% off at DD comes to 112.49
mcw50 with 6800 clips comes to 52 bucks then add the 14 bucks for heat sinks
68- 112 u save 44 bucks is all going with switftek
when the DD cools both

 

[Liquid_Cooled]

ummm..... isnt that a good thing when the DD 6800 block adds more heat to the loop? cuz that means it doing a good job transfering the heat.

Also, if you use just a waterblock on the cpu, that means you would have to attach some ramsinks. some people (like me) do NOT want to permanetly attach ramsinks to the memory, that would lower the resale value.

Heres my choices (in order) for watercooling a 6800.

1. DD 6800
2. Silverprop Fusion HL
3. Swiftech MCW50

heres a picture of my modified Maze4 GPU fitted on a 6800. i custom made the ramsinks since the BFG's new cooler doesnt give you the reference ramsinks.

 

[Koslov]

Get a DD 6800 Waterblock and if you're concern with the added heat into your loop add a 2nd Radiator/Heatercore. The Swiftech won't be better i'd put my hand on fire

 

[bellevegasj]

On air I'm currently getting 420/1.2ghz over clock on my BFG 6800 GT 100% stable.

Could you guys tell me what you were getting before and after you water cooled your 6800 cards?

 

[DieLate]

IMG

You're my hero, Liquid_Cooled. That's a great job on the GPU cooling there. And I've still never seen a better looking case than the one you've got.

 

[Liquid_Cooled]

why thank you!!!

 

[12 Axes]

I vote for swiftech too. I use the TEC version and have monster BGA ramsinks held on with silicone at the sides of the ramsinks. It sound ghetto but works really well and isn't permanent. My overclock went from about 415/1.08 to 440/1.15 at stock 1.3v.

 

[centvalny]

i have a hard time thinking the mcw50 will cool better than the DD6800 block with just heat sinks on the memory
is just a money thing is why u say go with the mcw50
i dont care about the money i just want the best possible cooling for the 6800 ultra i got
but if the mcw50 with the vantec heatsinks cool better than the DD 6800 ultra i will go with that but its hard for me to think that it willl

the DD6800 is 124.99 with 10% off at DD comes to 112.49
mcw50 with 6800 clips comes to 52 bucks then add the 14 bucks for heat sinks
68- 112 u save 44 bucks is all going with switftek
when the DD cools both

Believe me, I tried both blocks and NV-68 did not perform well.

NV-68 with MSI NX6800U and Swiftech w/ PNY6800U. Too bad SLI only w/ PCI-E not w/ AGP. With Swiftech at 475/1235(PNY) load 46C,idle 41C/ambient 33C. NV-68(MSI) 470/1199 load 50C. Both with MSI 61.22 driver.

 

[pcpro2]

thanks guys for the reply i went with the swiftech
my 6800 ultra extreme from evga clocks at 480/1240 out of the box

Just ordered all my stuff from danger den and swiftech..
swiftech MCW50 with 6800 adapter for my evga 6800 ultra extreme
swiftech MCW6002-p intel p4 cpu
danger den 12 volt D4 pump 1/2
double heatercore radiator with shroud 1/2 with 2 122mm evercool chrome fans
tygon 1/2 id tubing 10 feet
danger den bay reservoir polythylene 1/2
hydrx uv coolent
vantec iceberq copper BGA ramsinks
total 317.19 shipping and all

 

[DieLate]

Believe me, I tried both blocks and NV-68 did not perform well. NV-68 with MSI NX6800U and Swiftech w/ PNY6800U. With Swiftech at 475/1235(PNY) load 46C,idle 41C/ambient 33C. NV-68(MSI) 470/1199 load 50C. Both with MSI 61.22 driver.

You're telling me the $40 Swiftech with air cooled RAM heatsinks outperformed the $120 Danger Den with watercooled RAM?

 

[centvalny]

Yes.Especially DD recommend to use 60% compression on NV-68 mounting springs which imo not giving enough contact with GPU. Eventhough I used ACS5 temp. is a bit high for heavy overclocking to match cpu wth vapochill. GDDR3 is not a heat spreader(most ATIx800xt platinum have naked memory chips).

 

[centvalny]

thanks guys for the reply i went with the swiftech
my 6800 ultra extreme from evga clocks at 480/1240 out of the box

Just ordered all my stuff from danger den and swiftech..
swiftech MCW50 with 6800 adapter for my evga 6800 ultra extreme
swiftech MCW6002-p intel p4 cpu
danger den 12 volt D4 pump 1/2
double heatercore radiator with shroud 1/2 with 2 122mm evercool chrome fans
tygon 1/2 id tubing 10 feet
danger den bay reservoir polythylene 1/2
hydrx uv coolent
vantec iceberq copper BGA ramsinks
total 317.19 shipping and all

Just make sure that 6800 adapter(metal bracket)fit your MCW50. Mine was not. I have to use dremmel to make a bigger diameter. It scratched the bottom side of my MCW50. And also tried to use the black backplate that comes with 6800 adapter so your card won't bend, It has to be insulated though. You can use neoprene sheet with longer screws.

 

[fallguy]

On air I'm currently getting 420/1.2ghz over clock on my BFG 6800 GT 100% stable.

Could you guys tell me what you were getting before and after you water cooled your 6800 cards?

BFG 6800GT

420'ish/1140 before.

440/1180 after.

Innovatek GPU+Ram waterblock. Seems I need more volts, but Im not willing to flash the bios. Its 100% stable at 440, but 2-3 more Mhz and it hard locks. Temps down from 87c under load, to about 66c. Which is ironic, because that was my X800 load temp with the stock air cooler.

 

[mchammer]

BFG 6800GT

420'ish/1140 before.

440/1180 after.

Innovatek GPU+Ram waterblock. Seems I need more volts, but Im not willing to flash the bios. Its 100% stable at 440, but 2-3 more Mhz and it hard locks. Temps down from 87c under load, to about 66c. Which is ironic, because that was my X800 load temp with the stock air cooler.

I know you may have more headroom if you up the volts, but are the increases even worth messing with watercooling your video card? I fried a GF4 4400 2 years ago and have not touched water-cooling of a video card since. I had a DD block on it and I guess it wasn't making good enough contact. I hate how the block sits on the underside, but I guess it would be worse on top if leaks were to occur.

By the way Fallguy, I checked out your setup at your website and it makes me want to touch myself

 

[12 Axes]

Thats going to be one hot system, or is that cool . Be sure to let us know when you get it put together. Wow that is an awesome V/C clock I guess the UE really is Extreme . I can't wait to see if you get it up to 500 on water.

I could get mine to pass the coolbits test at 490, but unfortunately it was really unstable.