8-10 pairs of QDC in One Loop?

[CedricFP]

Hello LC section

I'm looking for kind of a gut feeling here, but would you fellas feel that doing 8-10 sets of VL3N QDC in a single loop with 2 DDC 3.2 in series would be a good idea? I was toying with the idea of isolating every single component making loop changes extremely easy.

Thanks for the input!

[Vapor]

8-10 VL3N pairs would be like having two AC aquagrafx480 blocks in your loop. With two DDC3.2s though, you'd still get functional (above .7GPM) with multiples of a wide range of blocks though.

[iddqd]

what about... say, 3 pairs of VL4Ns? those are way fatter. also, only 3 pairs.

E: but with 1xD5 rather than 2xDDC

[Vapor]

A VL4N pair is a little less restrictive than the Danger Den block in above chart. A VL3N pair is a little less restrictive than the EK block in the above chart.

2.5x VL4N pair is roughly equal to 1 VL3N pair. So 3 VL4N pairs is roughly as restrictive as the EK block above, which isn't bad at all for the functionality they bring

[Martinm210]

Using the estimator as a rough guess:

Assuming a low restriction CPU block, some tubing, common D5 pump = 1.74GPM

Adding 10 VL3N = .73GPM

Adding a second pump in series would bring you up to 1.14GPM.

So while a couple is no problem, running 10 of them would likely bring you under 1 GPM, you might want to plan on throwing another pump in line if you wanted to keep flow rates up.

[CedricFP]

I had feared under 1 GPM as well. Thanks for the input fellas. I see here that the VL4N's are roughly twice as "free flowing" as the VL3N QDC. But 8 sets with an XT and FC block still brings me a little low and I'm not happy with that, despite the XT's low flow resilience.

Thanks for the data estimates, Vapor and Martin. You fellas always manage to make the picture clearer. May have to stick another pump inline.

[patriot71]

So what your telling me is that if I plan a loop of:

2 x XSPC RX360
1 x XSPC Rasa CPU Block
1 x Reservoir
8 sets x Koolance VL3N

A D5/MCP655 cranked all the way up may not cut the mustard?

Before anyone points it out, yes I understand this is overkill for a CPU only loop.

[Vapor]

So what your telling me is that if I plan a loop of:

2 x XSPC RX360
1 x XSPC Rasa CPU Block
1 x Reservoir
8 sets x Koolance VL3N

A D5/MCP655 cranked all the way up may not cut the mustard?

Before anyone points it out, yes I understand this is overkill for a CPU only loop.

You'd be fine...over .7GPM, I'd guess (possibly a little bit over .75GPM, actually). And the Rasa is pretty good at low flow.

A second D5 might get you to around 1GPM (.7GPM * sqrt(2)), but would not be worth more than 1C, I'd estimate.

[patriot71]

You'd be fine...over .7GPM, I'd guess (possibly a little bit over .75GPM, actually). And the Rasa is pretty good at low flow.

A second D5 might get you to around 1GPM (.7GPM * sqrt(2)), but would not be worth more than 1C, I'd estimate.

Last question.

In your experience, if I reduced the number of QDC's to only 2 sets (CPU block), do you believe I would see a significant decrease in temperatures due to the increased flow rate?

[Vapor]

Maybe ~1C improvement

[patriot71]

Thank you much!