sli on a nautilus

[Elof]

Ok a quick question im using a nautilus and im running sli so im going to hook up 2 gpu blocks , should i use a y spliter to keep the flow to the cpu and gpu' s seperate ? or can i run the outlet of the cpu to them in loop , im going to be running 2 7900gt's so its a fair bit of heat , can the unit even handel this , will the pump handel the flow split , and can the radiator disapate that much heat ?

[JonKrmr]

The Nautilus should be able to dissapate a max of 500 watts of heat. Depending on what cpu you have, you should be under that with 2 7900gt's and cpu. I would suggest running all the water blocks in series. Res - pump - rad - cpu - gpu1 - gpu2 - res. Good luck! :biggrin:

[stev]

Elof,

 

Did you or are you planning the volt mod on the 7900GT? :sunglasse If your G71s are still under warranty, avoid this mod for now. ;):

 

http://forums.extremeoverclocking.com/showthread.php?t=216265

 

http://forums.extremeoverclocking.com/showthread.php?p=2332636

 

Even if you didn't do the volt mod, the 7900GT will push a max of 111W for each card. That's a good chunk of heat.

 

For best performance, I would go the route of having the CPU with or without the chipset on one parallel loop and the GPU's on another.

 

Sure, the Nautilus can handle 500W, but dumping high heavy loaded heat from one processor onto another before it gets to the HX isn't a good idea. Splitting the loop will give you the most gain for keeping things cool all around. Check out some eldon-james Y-fittings. I know that http://www.frozencpu.com has them. Your Presler 930 will thank you for keeping it's 95W surface cool too.

 

VR-Zone's review found here:

http://sg.vr-zone.com/?i=3437

 

Printable version here:

http://www.vr-zone.com/print.php?i=3437

 

Hope this helps some.

 

Stev

[Elof]

Thanks im using a 930d and the cpu is staying nice and cool but the video cards before i even start over clocking are pushing 60c each wich was why i was asking . Ive noticed im getting more heat of the 2 gt's than off anything else .

 

I wasnt planing on moding but i might in the end , for the moment i just want ot bring the internal temps down and queiten the case

[stev]

Elof,

 

You can get hose and fittings at FrozenCPU here:

http://www.frozencpu.com/ex-tub-27.html

 

OR

 

You can get hose and fittings at US Plastics here:

http://www.usplastic.com/catalog/product.asp?catalog%5Fname=USPlastic&category%5Fname=6915&product%5Fid=9057

 

http://www.usplastic.com/catalog/product.asp?catalog%5Fname=USPlastic&category%5Fname=7512&product%5Fid=8115

[Elof]

Thanks im a aussie so im looking for a local distributor at the moment , think i found one just waiting to hear back

 

Any sugestions on gpu waterblocks ? ive looked into the danger den koolash but im wondering if its worth the money they want for 2 of them , or stick to the swiftech and ram sinks ?

[DavARei]

I'm running DangerDen Maze 4's and my SLI is only 30 idle and 40 load.

That's OC'd to 645 clock and 805 mem ... but w/ 7600gt's.

Don't know the load diff, but DD is some good stuff.