Watercooling Setup Help - Looking for Affordable Performance

Mancolt

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May 8, 2012
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I'm going back and forth on the idea of water cooling vs. air cooling. I read the watercooling sticky v2, and a number of other articles/posts on water cooling. Depending on what the total cost of water cooling will be, I'd really like to go that route. I know it's not cheap, but when I'm selecting components, I'm ending up with something prohibitively expensive. I could use some guidance on what would be a good value and decent to high performance setup.

The rig I'm building will be the following:
Processor: Core i7 4790k
Motherboard: Undecided
Memory: G Skill Ripjaws X DDR3 2400 (PC3 19200) 2x8GB, possibly 2 sets (total 4x8GB)
SDD1 (for OS): Still undecided, but likely a Samsung EVO 850 512GB.
SSHD2: Seagate 2TB SSHD
VGA: SLI two Asus Strix GTX 970
PSU: EVGA 850w G2
Case: Enthoo Primo (most likely choice, if going custom water cooling route) or Enthoo Luxe (if air cooling, although haven't completely ruled this case out for water cooling).

I'd like to cool the CPU and both GPUs. I've gone to Frozencpu, and after just selecting an EK CPU block, and 2x EK VGA blocks, I'm at $340. That still leaves me to get fittings, tubing, reservoir(s), pump(s), and radiators. I didn't bother to continue pricing those out, since I estimated I'd probably be in the neighborhood of $800 by the time I had gotten everything. My budget is realistically $450. I *might* be willing to go a little north of that, but it depends on the answer to question 1 below.

I've never overclocked before, but would like to get into it with this build. I'm not going to be trying to set any records, but would like to get the 4790k to 4.7GHz, and maybe a bit more if this setup has the capacity for it. And I'd like to overclock the GPUs, but I haven't looked into or read as much about that.

I guess my questions are:
1. What parts of a water cooling setup are future proof/reusable? I tend to upgrade to an entirely new system every 4-5 years. Spending so much money upfront is much more palatable if I know that I'll be able to reuse much of it on my next setup. I'm thinking reusable parts include the CPU block (as long as the new chip just requires a new bracket), the Radiators, Reservoir, Pump (not sure what the useful life is on these though), and fittings. The VGA blocks are specific to the GTX 970s, so those won't carry forward. And I'd probably replace the tubing because it's not overly expensive.
2. Is there a "kit" that includes most of this stuff, so I could just add in the missing pieces and save some money this way?
3. Would this be a 1 loop or 2 loop setup? Would the VGA cards be setup in parallel or series?
4. I've read that all components should be the same compound. Is there a significant performance difference between options here (nickel vs. copper vs. acetal, etc)? This seems like the first place to save money, because the variation between the same block with different compounds can be quite substantial.

Thanks in advance for helping a water cooling newb out!
 
Solution
FYI, FrozenCPU.com is no longer in business (at least until further notice).

I get all my gear from Performance-PCs.com these days.

Most radiators are brass and copper. Both are perfectly fine. Avoid aluminum in anything at all costs.

Suggestion is kit + 2 GPU blocks. Go with DDC or D5 pump. You may or may not want to consider fittings and tubing size change, or make sure you at least get additional for the 2 GPU blocks. Also need to consider GPU block bridges, or just using tubing.
Custom loop initial investment sure can bring tears to any person without a bottomless bank account. Like you've states, you can expect most of the components to last through many builds and years of service.

1. Nearly every part of the water cooling loop is reusable like you've pointed out in your question. You're really only losing out on the water blocks for the GPU's. Like you've said, the brackets for the cpu block are generally interchangeable. The socket dimensions haven't changed much in the last few cpu iterations, I'd guess they continue following this path despite die shrinks etc since manufacturers generally just cram more transistors onto the die instead of reducing package size for desktop components.

I would recommend going the full copper radiator route. That along with your pump of choice from a reputable manufacturer like EK should get you a life of the components that will most likely surpass your use of them. The pumps are generally rated at 50,000 hours, nearly 6 years of use all day every day.

2. Since you've been listing EK parts already, I'd just recommend one of the EK starter kits to begin with. Those include everything you need for a CPU cooling setup and usually plenty of tubing to allow you to expand your loop to the GPU's and extra radiators. These starter kits are available in many many radiator/pump/cpu block combinations.

There are several 'LT' kits that include their acrylic top CPU blocks. Those blocks perform nearly identically to their more expensive offerings, appearance and material change are most of the cost difference, longevity is not.

I would make a general estimate of your loop length/travel and make sure the pump head pressure is higher, allowing for lower wear operation, lower pump temperature and options for future expansion.

3. To keep complexity down, I would suggest a single loop. The components of your system that you've listed, unless you are heavily overclocking each component, are very efficient, generating very low heat.
I would run the GPU's in series. If you were running a R9-290X or similar space heater turned GPU, then a parallel loop of just the GPU's might be in more order.
In an efficient loop, you can increase flow rate (if you had limited it before or have a PWM pump), to greatly reduce any heat gain difference from components in series such as the GPU's.

4. With material differences, your primary goal is to match materials between all the components. In the same department, regular coolant flushes along with component cleaning will keep your parts running tip-top for a very long time. The material changes from what I've observed are for coatings and tops, not so much for the actual block. The performance between all those options is very similar, if any difference can really be noted.



 

rubix_1011

Contributing Writer
Moderator
FYI, FrozenCPU.com is no longer in business (at least until further notice).

I get all my gear from Performance-PCs.com these days.

Most radiators are brass and copper. Both are perfectly fine. Avoid aluminum in anything at all costs.

Suggestion is kit + 2 GPU blocks. Go with DDC or D5 pump. You may or may not want to consider fittings and tubing size change, or make sure you at least get additional for the 2 GPU blocks. Also need to consider GPU block bridges, or just using tubing.
 
Solution