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post #1 of 16 (permalink) Old 04-05-2020, 06:22 PM - Thread Starter
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Custom Loop Question

Hey OCN! So I am looking to get back into watercooling and will be purchasing my parts starting in the next couple of weeks. I plan on mounting my components in a desk, with a sheet of glass over it. So I have included a picture of my loop idea, but I am just worried about the routing and order. Can someone let me know if this loop order looks sufficient and spot any issues I am not seeing. Keep in mind, the res and pump will be mounted flat inside this desktop. i have included a picture of a similar setup so you see what I am planning. Thanks!
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post #2 of 16 (permalink) Old 04-05-2020, 06:36 PM
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...probably might not make that much difference (and I hope I'm not misreading your diagram), but I typically mount radiator(s) right after the heat-generating components (ie CPU, GPU), then into the reservoir and then on to the pump which then feeds back into the water-blocks for CPU and GPU.

[also 'optional' comment' ...with a desk affording you plenty of space, have you considered dual rads (depending on the size & thickness you settled on, ie 360x60 ?). I know it would mean more 'plumbing and fan wiring' but with a desk-computer-build, might as well use all that space you gained ?]
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post #3 of 16 (permalink) Old 04-05-2020, 06:43 PM - Thread Starter
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Quote: Originally Posted by J7SC View Post
...probably might not make that much difference (and I hope I'm not misreading your diagram), but I typically mount radiator(s) right after the heat-generating components (ie CPU, GPU), then into the reservoir and then on to the pump which then feeds back into the water-blocks for CPU and GPU.

[also 'optional' comment' ...with a desk affording you plenty of space, have you considered dual rads (depending on the size & thickness you settled on, ie 360x60 ?). I know it would mean more 'plumbing and fan wiring' but with a desk-computer-build, might as well use all that space you gained ?]
I see what you mean. I was thinking in my head I wanted the cool water to go directly into heat generating components and not give time for the water to warm up before going back through the loop. I did think about dual rads, but the radiator I was looking at was an EK Coolstream 480. Do you suspect that maybe I'd be better of with 2 smaller rads, 1 for CPU and 1 for GPU, or will the bigger one for both suffice?

Also unrelated question...can you install more than one temp plug in your loop to monitor temps lets say before and after the radiator?

Thanks guys and gals!

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post #4 of 16 (permalink) Old 04-05-2020, 07:05 PM
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Quote: Originally Posted by jfizz84 View Post
I see what you mean. I was thinking in my head I wanted the cool water to go directly into heat generating components and not give time for the water to cool before going back through the loop. I did think about dual rads, but the radiator I was looking at was an EK Coolstream 480. Do you suspect that maybe I'd be better of with 2 smaller rads, 1 for CPU and 1 for GPU, or will the bigger one for both suffice?

Also unrelated question...can you install more than one temp plug in your loop to monitor temps lets say before and after the radiator?

Thanks guys and gals!

Re. radiator count and size, it really comes down to a.) your components and b.) planned 'oc'. I would think that the EK 480 should be able to handle quite a lot of heat, but once you get into a 380w-400w GPU (ie some 2080 Ti) and an oc'ed multi-core HEDT CPU at >1.33v, things might get toastier.

I typically run mutli-GPUs (ie sig rig) and thus always run separate loops for CPU and GPU...not an absolute necessity, but it works for me. Just the two GPUs in my system put out a combined 780w. That said, you do not need separate loops to run two (or more) rads, but the more components you add per loop, the more you want to consider the pump's head pressure rating.

Along the same line, having more than one temp plug in your system shouldn't be an issue unless the the temp plugs are restrictive. Usually, GPU blocks are the most restrictive in a loop, then CPU blocks
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post #5 of 16 (permalink) Old 04-05-2020, 07:16 PM - Thread Starter
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Quote: Originally Posted by J7SC View Post
Re. radiator count and size, it really comes down to a.) your components and b.) planned 'oc'. I would think that the EK 480 should be able to handle quite a lot of heat, but once you get into a 380w-400w GPU (ie some 2080 Ti) and an oc'ed multi-core HEDT CPU at >1.33v, things might get toastier.

I typically run mutli-GPUs (ie sig rig) and thus always run separate loops for CPU and GPU...not an absolute necessity, but it works for me. Just the two GPUs in my system put out a combined 780w. That said, you do not need separate loops to run two (or more) rads, but the more components you add per loop, the more you want to consider the pump's head pressure rating.
I am planning on a 5700XT GPU with OC, and I have an 8700K with OC. Like you said, given the space I will have I am not opposed to getting dual radiators...maybe 2 240 radiators in a single loop? I am concerned about pump pressure though, but the ek-xtop revo dual pump is sooooo expensive. Do-able but expensive.

So I guess those are the main questions right now...2 smaller rads or 1 big rad? And single pump or dual pump?

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post #6 of 16 (permalink) Old 04-05-2020, 07:24 PM
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you know LianLi makes a desk like that, AND its motorized adjustable?

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post #7 of 16 (permalink) Old 04-05-2020, 07:30 PM
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Quote: Originally Posted by jfizz84 View Post
I am planning on a 5700XT GPU with OC, and I have an 8700K with OC. Like you said, given the space I will have I am not opposed to getting dual radiators...maybe 2 240 radiators in a single loop? I am concerned about pump pressure though, but the ek-xtop revo dual pump is sooooo expensive. Do-able but expensive.

So I guess those are the main questions right now...2 smaller rads or 1 big rad? And single pump or dual pump?

I think a single EK 480 and D5 type pump should be able to handle an oc'ed 5700XT and oc'ed 8700K well, especially with a well-ventilated desk design you had drawn out above.

If you do decide to go for two rads, then why not go for some 'thick' 2x 360s instead of 2x 240s; that also gives you some headroom for future upgrades. Now, I only use D5 type pumps and while they have a deserved, superb reputation, they do not react well to any air in the system (given their larger internal diameter) - having two D5 in series helps with that, and I also like the fail-over with two D5s, and the solid pressure. But it is not an absolute necessity to go for dual pumps if you get all the air out.
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post #8 of 16 (permalink) Old 04-05-2020, 07:37 PM
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SideWinder is having a massive sale. Koolance's 450S is on sale for $65(normally ~$80)

also lots of other good stuff half off. all sorts of random BP fittings left.

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post #9 of 16 (permalink) Old 04-06-2020, 02:24 AM - Thread Starter
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Quote: Originally Posted by skupples View Post
you know LianLi makes a desk like that, AND its motorized adjustable?
I've seen that, however I think half the fun is building it

Quote: Originally Posted by J7SC View Post
I think a single EK 480 and D5 type pump should be able to handle an oc'ed 5700XT and oc'ed 8700K well, especially with a well-ventilated desk design you had drawn out above.

If you do decide to go for two rads, then why not go for some 'thick' 2x 360s instead of 2x 240s; that also gives you some headroom for future upgrades. Now, I only use D5 type pumps and while they have a deserved, superb reputation, they do not react well to any air in the system (given their larger internal diameter) - having two D5 in series helps with that, and I also like the fail-over with two D5s, and the solid pressure. But it is not an absolute necessity to go for dual pumps if you get all the air out.
Definitely worth considering!

Quote: Originally Posted by skupples View Post
SideWinder is having a massive sale. Koolance's 450S is on sale for $65(normally ~$80)

also lots of other good stuff half off. all sorts of random BP fittings left.

I am not opposed to the Koolance pump. But it has less head pressure than the D5. But I did notice both pumps use some form of aluminum. Can I even use either of those with Copper EK waterblocks?

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post #10 of 16 (permalink) Old 04-06-2020, 03:50 AM
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Quote: Originally Posted by J7SC View Post
...probably might not make that much difference (and I hope I'm not misreading your diagram), but I typically mount radiator(s) right after the heat-generating components (ie CPU, GPU), then into the reservoir and then on to the pump which then feeds back into the water-blocks for CPU and GPU.

The water temperature will even out so there is no single component that will dump enough heat to increase the temps that you need to add a radiator after it.
I have temp sensors on every inlet/outlet in my loop and at no stage is any more then a degree of each other.

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