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Loop surgery and transplant

post #1 of 4
Thread Starter 
Hi y'all.

I first installed a custom loop on a project build before I wanted to install it in my main rig.
My old loop is as follows:
MCP350 with EK X-Res->MCRQP220 with push/pull AP-15->EK Supreme HF Copper/Acetal all plumbed up with Bitspower 1/2"ID 3/4OD compression fittings and Primochill Pro LRT tubing.

My plan is to take the pump/res, cpu block, fans and fittings and pair them up with a new MCR-QP 320 rad (and maybe the old 220 as well) with AP-15 push pull (all of which I have already) and add a couple gpu blocks onto my SLI'd 570's. The blocks that I'm looking at are the EKWB GTX 580+ nickel/acetal blocks. I know the nickel EKWB were having corrosion problems in the past, but that issue has been rectified IIRC. Will it be an issue to have a copper cpu block with nickel plated copper gpu blocks? I can't find any acetal/copper EK blocks. I also plan to use a EK serial bridge between the two cards.
If I'm adding these gpus and possibly rad, will my 350 have the muscle to power through it all, or should I invest in a new pump and res?

TL;DR
Will a MCP-350 be enough for SLI'd cards and cpu with two rads?
Will there be any issues using a copper cpu block with nickel plated gpu blocks?

TIA,
Ovlazek
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post #2 of 4
An MCP-350 should manage in a loop like that, but you might want to run your GPU's in parallel, as that will lower the loop restriction and raise the flow to the CPU block. As for the nickel corrosion issue, I don't know that anyone has a 100% certain reason as to why they fail, I don't personally have any nickel-plated gpu blocks. I've heard a few people speculate it's often an issue with a silver killcoil speeding up the problem, and I've also heard that if you have the issue, as long as you clean the results out of the loop to prevent clogs, it's just a visual problem that doesn't affect performance, so... *shrugs*
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post #3 of 4
Thread Starter 
Serial is preferred for temps though, yes? If that is the case and the 350 won't suffice, I'll probably pick up a new pump.
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post #4 of 4
Honestly, there's not a lot of difference between serial and parallel. GPU blocks aren't particularly affected by lower flow rates, the temp difference between them shouldn't be more than 1-2C unless you're looking at VERY low flow rates. Just flipping through the pump/radiator spreadsheet, it looks like you'd still be seeing between .9 and 1gpm with an mcp-350, 2 gpu blocks, that cpu block, and the two radiators, which should still be pretty acceptable. In parallel, you'd be seeing between 1 and 1.1gpm. You could always just add a second mcp-350 to the loop as well, if you're concerned that's not high enough for you.
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i7 860 Gigabyte P55A-UD4P 2x EVGA GTX460 2x 4gb Corsair Vengeance 
Hard DriveCoolingCoolingCooling
Samsung F4 XSPC Rasa cpu block 2x XSPC Razor 460 Black Ice GTX 360 
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MCP-350 Windows 7 64bit Samsung SyncMaster SA300 23" Filco Majestouch "Otaku" Tenkeyless 
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Hard DriveCoolingCoolingCooling
Samsung F4 XSPC Rasa cpu block 2x XSPC Razor 460 Black Ice GTX 360 
CoolingOSMonitorKeyboard
MCP-350 Windows 7 64bit Samsung SyncMaster SA300 23" Filco Majestouch "Otaku" Tenkeyless 
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