switching from 345AT to a 370

CPU water cooling blocks...
locksmith
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switching from 345AT to a 370

Postby locksmith » Sun Mar 13, 2011 11:26 pm

Guys I am currentlt switching to a 370 waterblock and I need some advice as to if my RP980 can handle the block since I am running a 4 radiator setup but my fans will only come on if I turn the fans up to max(10). I am currently trying to cool a I7 975 Extreme Ediotion cpu and going to add cooling to my Ram and 2 GTX460's in sli in the future.
I also had 2 high flow quick disconnects which I had to remove because of poor flow problems. I am figuring that the RP980 is too week for the cpu and 1 quad rad with 4 fans in push and pull configuration. The exchanger is mounted outside the case in a vertical position with the nozzles at the top, not sure if it should be switched with the nozzles at the bottom. Any help would be greatly appreciated.


Here is what I have:

case: cooler master haf X
MB: Evga x58 3 way sli
ram: 6 gig corsair dominator
HD: 160gb Intel ssd
HD: 2 1 tb wd
DVD: LG Super Multi rewriter
Fan Controller: Rheobus Extreme
Tubing : 3/8 id x 5/8 od (replacing with 3/8 x 1/2)
Fittings: Koolance Compression.

Mik
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Re: switching from 345AT to a 370

Postby Mik » Mon Mar 14, 2011 12:14 am

The 345 block is low resistance and from what I understand of the 370 it's pretty low too. Neither should pose a problem for a healthy RP980 but by the sound of it yours may have some issues.
A couple of high flow QDCs shouldn't pose a problem for flow; what setting was the pump on?
Don't worry about the location of the nozzles on the rad, it's a wash from the pump's point of view.
Are you running the fans off the fan headers on the unit? When you say quad rad with 4 push pull fans does that mean you have a total of 8?
It sounds to me like there could be something wrong with your RP980

locksmith
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Re: switching from 345AT to a 370

Postby locksmith » Mon Mar 14, 2011 9:17 am

The fans only turn on when turned up to 10 or full, if I turn back to 9 they all shut down and the temp starts going up. The fans are on a 4 wire harness from Koolance going directly to the fan connection on the back of the RP980. All the fans are mounted on the same side of the rad with 2 pushing and 2 pulling, should I be using 8?

Mik
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Re: switching from 345AT to a 370

Postby Mik » Mon Mar 14, 2011 8:17 pm

There's some kind of problem with your RP980. You should be able to power 4 fans at variable settings without stalling. I'm wondering if the same problem (low power probably) isn't messing up your flow. Using 4 fans is fine but you'd be better off having them all either pulling or pushing so you get a smooth flow of air. If the rad's outside the case I'd go with push as most fans seem to work better in this mode. You'd get better temps with a push- pull (push fan> rad> pull fan) but I'd urge you to sort out your RP980 first as with a simple loop like yours 8 fans would be overkill. Is it under warranty?

locksmith
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Re: switching from 345AT to a 370

Postby locksmith » Tue Mar 15, 2011 6:19 am

No unfornately it was purchased over a year ago so I'll have to buy another so I should go with the the RP1000. The pump in the 980 is a lirttle noisy anyway so I did suspect it as being bad anyway.

bambihunter
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Re: switching from 345AT to a 370

Postby bambihunter » Wed Mar 16, 2011 12:33 pm

Another thought is to run the fans off the motherboard headers. I run ALL of my fans off my old Asus Crosshair II fan headers. That includes 6 120mm fans and 4 80mm fans.
PC5-1336BK
PSU-1300ATX
2 VID-NX295S
2 RP-1000
RP-980
CPU-350AC
2 CHC-122
MVR-100
AMD 955BE, 6 250gb in RAID0, 8GB OCZ Flex 1200, 2 EVGA GTX295 FTW's. Loop 1: CPU & quad GPU's. Loop 2: PS to 120mm to NB/SB/Vreg's to dual 80mm rad/fans

Mik
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Re: switching from 345AT to a 370

Postby Mik » Wed Mar 16, 2011 7:14 pm

An RP 980 would work as a replacement but an RP 1000 will be less stressed so probably quieter and allow for future expansion. As bambihunter says, you can run the fans off the motherboard if you prefer. They'll work fine that way. I run mine off the RP 1000 for simpler manual control (plus I use a couple of fan headers for FM17 data input) but it's purely a personal choice. In my case I have 3 RP1000s and 11 fans with the most powered off a single unit being 5.


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