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Best performing D5 Top? - Page 4

post #31 of 40
If the the vario 5 setting is the same as the 655-B setting then its pretty much silent from what I can tell. Even with most of my fans off a HDD or a CD or even the psu mask any noise from the pump.
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post #32 of 40
For what it's worth, I've had a D5 (MCP655 Vario) running on setting 5 using an old prototype EK top for over 2 years straight.

Do not worry about the D5 motor, it uses a metal cup for the bearing housing which provides really good cooling for the motor.

As far as I can tell, the vario motor and the strong model motor are also the same PCB. The strong runs a good 1000RPM faster than the vario at setting 5 and is designed to run that way.

The DDCs are the ones that get hot, but I think it's because of the plastic housing which acts more as an insulator.

BTW, the basic model = Vario Setting 4.
    
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post #33 of 40
Thread Starter 
I don´t have the Vario from Swiftech.

I have the Alphacool VPP655 T12 : http://www.aquatuning.at/product_inf...nschluss-.html

Step:5 = 4800 rpm

It is just a rebranded version I know put people some it differs minorly from the Vario cause it is newer and the are said to have maid some changes but I don´t know which.

In terms of noise, I have the Extended Ascension with triple quad top and trinity front...the front will be used by 1 x 360 rad with GentleTyphoons on the Alphacool Heatmaster(special fan controller)...the other 6 x 120mm spaces will be used for 6x120mm Yate Loons 1350 rpm...the top will be occupied by my phobya 1080 rad with the phobya 1500 rpm silent fans ....rest of the case will be exhaust also only by low rpm fans ....minimum rpm of all the fans will be 800-1000 rpm ..I hope I won´t hear the D5 on seeting 5 then.


Also Martinm210 if I understood your post right you have the MCP 655 and a MCP 355 in your loop? Some people in this thread said this wasn´t possible because I wanted to try that myself to either not having to run the D5 on setting 5 and having some extra power and headpressure with the MCP 355 ....but charliehorse555 confirmed that this was indeed possible ...maybe you wanna give some more info if you have that in your loop
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post #34 of 40
Same Laing D5 vario pump just rebranded/packaged.

I have two separate loops, one with the mcp655 setting 5 with EK prototype top and one with a mcp355(DDC3.2) with an prototype swc top. Ran bothlike that for 2 years.

One cpu only loop with an EK supreme and TFC 480, the other is a GPU/MB loop with a GTX480. You can see pics in my build log in my old MLL archive link below.

You can mix pumps as long as they are similar enough, especially the laing pumps, they are designed to operate in their full potential range and have rpm limting circuity built in.

I ran a PMP450 and PMP450S in series on a test both turning different RPMs, and they behaved together just fine. One turned 5800 rpm while the other turned 4800 rpms. AT 24V they actually hold that rpm regardless of the restriction and flow rate.

For some reason people think the impeller is turning like a slipless gear or tires on pavement. It doesn't work that way. They are more like a boat prop in the water. You can drop an anchor and run a boat at full speed and go nowhere. The pump impellers are much the same in working in a slipping like mode so there is no problem mixing , especially in a high restriction scenario where you'll never even come close to the max flow rate of either pump.

Indusrial pumps are different though, in those you want to operate the pump near it's best operating efficiency point which is sort of in the middle of the pump curve. Too low or too high along the curve is bad, but we don't have that with these small DC pumps...especially these that have protection built in.
Edited by Martinm210 - 2/24/11 at 5:20am
    
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post #35 of 40
Thread Starter 
Bottom Line:

What will give me better temps in a CPU only loop?
A kryos with a MCP355 with acceptable GPM.
Or a EK Supreme HF Full Nickel with D5 at setting 5 with max high flow GPM.
------------------------------------------------------------------------------------------

Same question here in a full loop :
EK Supreme HF Full Nickel,1080 rad,EK GPU Block,360 rad with D5 at setting 5
AC Kryos XT,1080 rad,EK GPU Block,360 rad with MCP355

Or Kryos + full loop with D5 & DDC
Or EK + full loop with D5 & DDC
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post #36 of 40
Quote:
Originally Posted by Kung Pow View Post
Bottom Line:

What will give me better temps in a CPU only loop?
A kryos with a MCP355 with acceptable GPM.
Or a EK Supreme HF Full Nickel with D5 at setting 5 with max high flow GPM.
------------------------------------------------------------------------------------------

Same question here in a full loop :
EK Supreme HF Full Nickel,1080 rad,EK GPU Block,360 rad with D5 at setting 5
AC Kryos XT,1080 rad,EK GPU Block,360 rad with MCP355

Or Kryos + full loop with D5 & DDC
Or EK + full loop with D5 & DDC
I would pick the Kryos in a CPU only loop and I would pick the EK HF for a multiple block loop because of their restriction differences and performance being so close. Not so much for the CPU temps, but for the rest of the blocks getting better cooling as well as the rad being a bit more efficient.

You could probably do fine with just one pump in the big loop to, but if you're going to try that, it would be better to go for the EK. You'll get a hair better GPU temps and a hair better performance out of the radiators is all.
    
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post #37 of 40
Thread Starter 
The MCP 355 has max 22PSI????!!!Oo
It would be stupid to operate my loop with 5 PSI if I could do it for the same price with 22 PSI?
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post #38 of 40
Quote:
Originally Posted by Kung Pow View Post
The MCP 355 has max 22PSI????!!!Oo
It would be stupid to operate my loop with 5 PSI if I could do it for the same price with 22 PSI?
That's not how much pressure the pump produces, it's how much pressure it can withstand before cracking or leaking. The pump with a good top puts out just over 6 PSI.
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post #39 of 40
Thread Starter 
Hey and charlie as long as you are on.
A guy of mine took a look at your PSI calculation.
He said that you made a little mistake, meaning that you took the PSI values of the components that were tested in a loop that only contained them singularly.
And that adding all the PSI values would not result in the PSI requirements in full loop because the PSI they needed together would be less.

What can you say about that?
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post #40 of 40
Thread Starter 
charles?
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