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Best performing D5 Top? - Page 3

post #21 of 40
Quote:
Originally Posted by iamwardicus View Post
You should not mix and match pumps. They will be pushing/pulling water at different rates and at different pressures so you will wear them out *much* faster. Stick with just one pump type in the loop.
No, they don't.


@Kung_Pow

If you already have a 655 you can still use that just fine, you're just going to have to turn it up from setting #3 to setting #5. Here is the graph for setting #5:




As you can see it provides over 4 PSI at 1 GPM. I'd just keep your 655 and up the setting level. Even at setting 5 it's still more than powerful enough.
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post #22 of 40
Thread Starter 

The question is will it be quiet at that setting?I have never heard the D5 on level 5.
Is it very loud with the EK top?
And won´t that extremely shorten the lifespan?

My Phobya Balancer 250 res has anti cyclone still looks like it is sucking a lot of air though.
And many people report and advise not to run it at setting 5 because it won´t even last 4 months that way.
Edited by Kung Pow - 2/23/11 at 1:23pm
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post #23 of 40
it should be fine they would have to test the pumps at setting 5 from factory and it has a 50k hr warranty.
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post #24 of 40
I've never heard anyone else claim that the lifetime was the pump was significantly shorter at setting 5.

The reason the reservoir has a cyclone is because the pump has no restriction, so it's pushing it's maximum flow rate of around 4.5 GPM. With your loop you will have 1.0-1.2 GPM so you won't have that problem.

Noise wise most people say that the 655 is silent even at setting 5. Just make sure to mount it nicely in your case so that it doesn't cause any noise through vibration.
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post #25 of 40
I have a single D5-vario at setting 5 in my sig rig. CPU block, 2 GPU blocks, MIPS ram block, XSPC 360 and 240 radiator and it handles everything perfectly fine, I get great temps. As for sound, I cannot hear my pump at all over the fans, the D5 is silent even at max setting.

Also, I have a EK spin dual bay res and the flow meter is a good indicator for me that I'm getting good flow.

Edit: BTW I replaced my D5 top with a Bitspower V2 POM top.
http://www.sidewindercomputers.com/bid5modtop.html
Edited by ttoadd.nz - 2/23/11 at 1:48pm
    
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post #26 of 40
Thread Starter 
hmm I am not sure yet I think the MCP 355 will do better pressurewise than the D5 on setting 5.

Maybe the flow will be a little worse though don´t you think?

And charlie if you are sure it is ok to run both the D5 and MCP 355 without having to worry about the order the are alined than that is even better news
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post #27 of 40
The MCP355 does have better head pressure and would give you slightly higher flow rates. The difference between the two pumps for your loop is not huge so the temperature difference between the 655 and the 355 for your loop is easily less than a 1C.

I'd just stick with the single MCP655 that you already have, it will perform excellently and you can spend the money on more radiator power or some really nice fittings.
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post #28 of 40
Thread Starter 
thx charlie great advice
Looking forward to seeing my EK Supreme HF in action
And I contacted Vapor to get some (ambient temps,Delta T temps and descriptiosn of the used rads etc in his Kroys review in which he also stated the EK HF)

I am really wondering about those results.
And because there isn´t much on the net about Kryos vs EK HF P1
that doesn´t call them par or equal that is my only bet^^
I wanna see/know the EK HF is just a better block to make me feel better about my decision
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post #29 of 40
setting 5 is almost the same as setting 3 in terms of noise, the light hum the pump makes just gets slightly higher in pitch
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post #30 of 40
Two pumps at setting 3 will produce roughly the same pumping power as one at setting 5. For the ultra silence types, I have heard a few people prefer setting 3 over 5.

It's one of those things, you'll just have to try for yourself and see. In my system and if the pumps are decoupled properly, I don't notice the D5 at setting 5 nor the DDC3.2 @ 12V much. The fan and PSU fan noise masks the pump noise completely.

But...if you get down below 800RPM fans or so, it is possible that pump noise can be a concern. Also if you solidly mount the pump, that can also cause problems.

Anyhow, I would suggest trying the stock top first. The difference between stock and aftermarket tops on the D5s is a fairly minor gain compared to the DDC series. There is a little improvement in efficiency, but I would do it for other reasons such as looks or having the ability to use your favorite barbs as well.
    
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