eva2000

Scary stuff... it's my first time ever water cooling a video card

I probably put off GPU water cooling for numerous reasons one being i can't volt mod if my life depended on it and straight water cooling for stock volt cards don't bring much gain. But along comes HIS X1800XT with software adjustable voltage for GPU and mem

I'm using the following:

• Dangerden Acetal Maze4 Low Profile water block with 1/2" barbs
• Swiftech MCP655 pump
• Radiical.com.au Ultra triple fan single pass radiator
• 3x Xinruilian RDL1225S 120 mm fans (28dba/1700rpm/71cfm) pulling
• Clearflex 1/2" tubing
• Radiical Brass T-line piece
• Nulon Ultracool Green coolant mixed in ratio 1:10 with distilled water
• Kayl's custom 100W psu with auto startup wire to power MCP655 and fans

I originally wanted to use my MCP600 pump but that went down the sink read MCP600 went down the sink

Pictures:
There aren't any right now because the gear is placed in my utility trolley's 2nd tray pictured here http://www.fileshosts.com/DFI/NF4_SL...n_cooled/html/. Due to the placement of gear, you wont get any clear pictures of the gear once it's installed and I didn't bother taking pics when installing. Will take some later if possible

Here's Kayl's custom 100W psu i'm using - i'm using the one marked 13.81v which is the max adjustable 12V voltage i can set if needed




Full pics of psus here http://www.fileshosts.com/watercooling/custompsu/html/

Results:
Nice and cool @625/750 stock 1.3v (disabled ATI CCC)

GPU idle = 33C
GPU environment = 30-31C

GPU load = 37C
GPU environment = 34-35C

Post GPU load temps instantly drop to 33C





I'm going to have some fun


edit: my progression so far

HIS X1800XT stock heatsink, stock bios max clock = 756/900 load temp 69-71C
VF700CU with zalman ramsinks with ceramique, stock bios max clock = 735/873 load temp 73-85C
HIS X1800XT stock heatsink 1st remount with ceramique, stock bios max clock = 756/936 load temp 69-71C
HIS X1800XT stock heatsink 1st remount with ceramique, stock bios + air con cooled max = 776/936 load temp 59-62C
HIS X1800XT + DD Acetal Maze4 with ceramique, stock biox + air con cooled = 817mhz on core and 963mhz artifact free and 972-981 with slight artifact in GT3 of 3D2k05 - mem undervolted from 2.097v default to 1.985v allows me to jump from 936 to 981mhz!. Load temp 51-52C

room ambient between 28-31C average

Update: Jan 5, 2006
Unhappy with the mem clocks with the puny Zalman ramsinks, i swapped 5 of the pieces over to some BGA copper monster ramsinks - these are huge @20x20x15mm !



Full pics at http://fileshosts.com/videocards/HIS...XT/Maze4/html/


Update: Jan 10, 2006
Roughly seems it scales as

GPU
1.425-1.45v = 756mhz
1.475v = 762mhz
1.5v = 783mhz
1.525v = 789mhz
1.55v = 796mhz
1.575v = 803 all the way up to 816.75mhz

Mem seems to have gone from
2.097v = 909-936mhz
1.933v = 945mhz
1.949v = 954mhz
1.955-1.965v = 963mhz
1.979-1.987v = 972mhz with slight artifact in 3dmark05 GT3

To give you an idea of power draw at load for

Opteron 170 @2950mhz at 1.62v
Corsair Hydrocool 200EX
HIS X1800XT @803/972 1.575v/1.985v
4x 80GB Hitachi 7K80 SATA II raid 0
1x 250GB Maxtor Maxline Plus2 PATA

3dmark05 load = 580W

Load includes
- 61W from BenQ FP2091 + BenQ FP91G LCD monitors
- 34W from MCP655 pump + 5x 120x25mm fans + dual LCD monitor probe
- ~14W Corsair Hydrocool 200EX
- 580W - 104W = 476W for system at load

And so far 11,852 3dmark05!







Update: Jan 8, 2006

Closer and closer we get to 12k

512MB HIS X1800XT with Acetal Maze4 waterblock
@810/972

3dmark05 = 11,904
http://service.futuremark.com/compare?3dm05=1666337





AM3 = 116,845





Update: Jan 14, 2006

Changed to 2x 512MB Gskill PC4400LE TCCD 431 @295mhz 2.5-3-3-6 and finally breaks 12k by 1pt LOL

512MB HIS X1800XT with Acetal Maze4 waterblock
@816/981

3dmark05 @816/981 = 12,001
http://service.futuremark.com/compare?3dm05=1698234

Attached Images

APC_580W_803-972_295ghz.jpg (43.0 KB, 3 views)

KingYubbo

100W CPU? I thought it was more? Wow cool! eva's lost his virginity :O quick! ON THE BANDWAGON EVERYONE!

DeNs

About damn time is all i've gotta say Welcome! GPU cooling is a heck of a lot more fun than straight air. Can't wait to see some results from the 1800XT now it's on water.

What's the next step?

---dens

eva2000

Next step who knows


Well just prelim looping ATI Tool beta 11 'show 3d' stress test.

oc'ing using ATI Tool beta 11 max = 762mhz at 1.45v and locks up higher

but using good old method of X1800 Overclocking tool for clocking max i get so far is:

GPU
783mhz at 1.5v
789mhz at 1.525v
796mhz at 1.55v (gpu idle = 46-47C and gpu load = 51-52C)

Mem
seems to lost mem max of 909-936mhz with the puny Zalman ramsinks - past 769mhz GPU can't get mem past 873mhz ??????

Tried upping and lowing mem volt doesn't seem to help ... SIOUX how ya manage 970-999mhz on mem ?

I think i need some fan cooling over ramsinks to see if that helps

edit: realised the 2x side 120x25mm 71cfm fans were turned off so no additional air flow was happening - turn them on and bam mem @920mhz and rising so far

eva2000

First real 3dmark05 bench on water

HIS X1800XT + Acetal Maze4 Low profile GPU block
@797/936

3dmark05 = 11,642
http://service.futuremark.com/compare?3dm05=1652334

Rammsteiner

Thats very nice Eva! . Is that a 24/7 OC?

eva2000

well it cant be 24/7 oc as i only had water cooling for ~3-4hrs

Rammsteiner

LOL . Are you gonna try to run 24/7?