Watercooling 4 5970's with 480 radiator, enough?

[jjshabadoo]

I have a radiator coming which is rated for 1300 watts. It's a  koolance quad 120mm HX-CU radiator, has higher fin density of 20 FPI and I plan on running it with 4 scythe ultra kaze 120x38 3000 RPM fans.. I have a swiftech mcp655 which should be more than enough to push water through quickly. I'm planning on using the ek acetal+nickel waterblocks with the EK quad parallel bridge. 

Since I'm down clocking the ram, etc. these things only pull like 250 watts each, correct? I'm hoping to overclock the crap out of the gpu's of course, but no over volting, just see how far I can go at stock voltage.

Any suggestions or tips? Oh and I'm using the ASUS P8P67 WS motherboard with a low watt 1155 processor. I just wanted the option to turn this into an ultra gaming rig down the road.

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[cuz0882]

I really doubt it, I have 2 6970's and a 6990 with 1 regular 360 rad and 1 Xtreme 360, also with kaze fans. I still have it sitting in front of the air conditioner. You may also run into pressure problems. Leave the stock pump top on for best results. Keeping the rad outside the case will help a lot also. I use the koolance quick release mount, works well. http://www.frozencpu.com/products/9095/ex-rad-159/Koolance_Radiator_Mounting_Bracket_w_Quick-Release_BKT-HX001P.html
The wattage sounds about right, more like 300 each + 200watts for the rest of the pc if you over volt. You can only run about 800 mhz without changing the voltage.  I would go 1100 @ 870 atleast. They would stay plenty cool on air at normal voltage so there's not much point of using water if you don't. Hope you have 2x 1000 watt power supplies and not cheap ones, I would go with 1x 1000 and 1x 1300 for the board.

[Syke]

4x5970s is a lot for single rad. Try putting fans on top and bottom for a push-pull configuration to maximize airflow. Also try to undervolt a bit. That will save a lot of heat.

[ArtForz]

I'd stay away from Scythe UKs, got a box full of em. Sleeve bearings shot after a few months @ 100%.
Btw, OEM of the Scythe UK line is Young Lin Tech Co.
If you're looking for decent rad fans in the size/power category of a UK3k...
delta afb1212hhe
panaflo fba12g12u
...
or really pretty much anything 120x120x38 from a reputable mfg. with ball bearings and 5-7W.

[jjshabadoo]

Thanks, I have another 480 I can use, so might as well I guess, but was wondering if I then should just go double loop. I have an extra radiator pump and reservoir exactly like the ones below.

To Art's comments about the kaze fans, I got 20 of them for $80 as part of all this other water cooling stuff used, so what the hell, I'll use them until they burn up and then go delta or panaflos. They should at least go well with these rads, because the research I did showed these radiators are great with high RPM fans.

Here's the system I'm building:

ASUS P8P67 WS motherboard
silverstone 1500 watt psu
Intel celeron G530 from newegg
Crucial 2GB 240 pin RAM
4 x HD 5970's
4 x EK acetal/nickel full cover water blocks
4 x EK RAM backplates
EK fc quad parallel bridge
EK fc link r5970
koolance quad 120mm rads HX-CU 
Swiftech MCRES-MICRO™ Rev. 2 
UltraKaze 120x38mm fans
Swiftech mcp 655 stock
1/2" fittings
1/2" ID 3/4" OD tubing

Operating System
16gb flash drive with linuxcoin running cgminer

Of course all unecessary motherboard features turned off, USB 3.0, etc. etc. whatever I can find to lower the wattage.

I'd also like to get all of this stuff in a case because I will be keeping it at one of my offices(no I'm not stealing the electric, I own the place!)

I just don't want to set it up all home rigged and then have an employee attempt to move it or something and screw it up. Sucks though, because any case that can hold two 480 rads is NOT cheap. Even if you're willing to gut some of the bigger cases. It looks like the cheapest one is the Zigmatek Elysium. I think you still have to remove all the HD cages to get two 480's to fit.

[bulanula]

Thanks, I have another 480 I can use, so might as well I guess, but was wondering if I then should just go double loop. I have an extra radiator pump and reservoir exactly like the ones below.

To Art's comments about the kaze fans, I got 20 of them for $80 as part of all this other water cooling stuff used, so what the hell, I'll use them until they burn up and then go delta or panaflos. They should at least go well with these rads, because the research I did showed these radiators are great with high RPM fans.

Here's the system I'm building:

ASUS P8P67 WS motherboard
silverstone 1500 watt psu
Intel celeron G530 from newegg
Crucial 2GB 240 pin RAM
4 x HD 5970's
4 x EK acetal/nickel full cover water blocks
4 x EK RAM backplates
EK fc quad parallel bridge
EK fc link r5970
koolance quad 120mm rads HX-CU 
Swiftech MCRES-MICRO™ Rev. 2 
UltraKaze 120x38mm fans
Swiftech mcp 655 stock
1/2" fittings
1/2" ID 3/4" OD tubing

Operating System
16gb flash drive with linuxcoin running cgminer

Of course all unecessary motherboard features turned off, USB 3.0, etc. etc. whatever I can find to lower the wattage.

I'd also like to get all of this stuff in a case because I will be keeping it at one of my offices(no I'm not stealing the electric, I own the place!)

I just don't want to set it up all home rigged and then have an employee attempt to move it or something and screw it up. Sucks though, because any case that can hold two 480 rads is NOT cheap. Even if you're willing to gut some of the bigger cases. It looks like the cheapest one is the Zigmatek Elysium. I think you still have to remove all the HD cages to get two 480's to fit.

Sick configuration. You certainly get the rep. Good value for money, too, I might add. 4*5970s is a max of 8 GPUs so very good utilization of density right there.

[jjshabadoo]

system cost at 3016 total right now which is really not bad considering. Even at potential hash rate and difficulty it can really generate some coins and pay for itself fairly quickly. I also expect to turn it into a pretty sweet gaming rig for my kids in a year or two. pull 2 5970's and add a solid cpu.

anyway, hopefully I can get it running sweet and stable. linuxcoin has been kicking my ass lately and I just had an ethernet port fail on an MSI 890fxa-gd70 which is driving me nuts. had 4 5870's that were super stable generating about 1.8 GH/s at 750 watts and decided to f with it of course and then zap, no ethernet. I wanted to add a few fans to blow into the cards to help cool them a little better and then poof.

My kingdom for a version of linuxcoin that doesn't fail once you move a gpu around or remove one.

I'll update everyone on this 4x5970 build once I get it done, might be a few weeks since i just had neck surgery about 3 weeks ago.

[cuz0882]

Water cooling is actually not very cost effective at all. I've been running systems with 3 5970's @ 2300-2400 mhash. Total cost per system is around 1200-1700 depending on prices. Thats with 1500watt psu so I could run 4 cards per system but its not really helpful for my case, if I run more then 6 cards on a breaker it won't work. I did purchase a few water blocks that came cheap with cards, I plan to use them on my next pc which will go in the living room. They are nice for keeping the pc quiet. Water cooling definitely does have its uses.

[jjshabadoo]

yeah this isn't meant to be a super cost efficient rig, more of a super rig that can be turned into an awesome gaming rig down the road. I also will be getting reasonable power costs, so it will make some money in the end and I've wanted to do some more water cooling work since i've only done three water cooled rigs before.

besides, I got the parts and cards for pretty cheap and the amount of money you lose f'in around with those diamond cards from newegg, I'm thinking water cooling should hopefully pay for itself right there. This should be a damn stable rig once set-up at least that is my primary goal.

Is a swiftech mcp655 enough for two 480 rads and four gpus in a parallel? I've read that it should be, but hearing from someone with some experience would be nice.