Trying to figure out pumps

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spr0k3t

n00b
Joined
Feb 16, 2008
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I'm a noob, so I need some help on pumps and possibly tubing.

Ultimately I'm going to set up the loop on the CPU, GPU, and NB/Mosfets. My primary concern is to make sure the system is stable and quiet. I've got a Feser 360, Swiftech Apogee GTX 1366, and a Swiftech MCRES rev2 so far. I'm trying to figure out what would be the best pump to go with. The initial loop may only include the CPU and expand to the GPU and NB/Mosfets later. Space is no concern... I have plenty of room in the CM ATCS Running the Asus P6T D board.

Now, the later question... should I go with 1/2" ID or 3/8" ID?
 
I'd go with 1/2" barbs with 7/16" Masterkleer tubing - this is your safest option.

As for the pump, the swiftech MCP655 is IMO the most "durable" pump - mine's been in operation for over 3 years now. The DDC+ with any modded top of your choice will take the crown as the absolute "best" right now though.

I recommend the 655... The extra head pressure of the DDC+ Top just doesn't make a damn difference for a low restriction loop.
 
I also would recommend the MCP655. It quiet and in the year I own it have not had any problems with it.
 
Arcy, I wouldn't call that low-restriction. I remember that you prefer to keep everything inline, in which case the NB/MOSFETs will hurt the entire system's flow. As such, I'd steer him back towards the MCP355 (or twins) with a modded top.

I know you disagree with my idea of balancing pressures through splits and rejoins, but I always prefer to keep low-heat, low-space blocks like these in separate, smaller-diameter branches off the main line. For these types of setups, the MCP655 is definitely the best choice.

And to the OP:
No matter which pumps you settle on, make sure they match the rest of your outfit. :p
 
Yep, i have dual loops with a 655 vario pushing each. Great pump. Also, even if you run 7/16" tubing over 1/2" barbs, its still a good idea to clamp. I still have a few unclamped parts mostly because i need to order the right size clamps.
 
Thanks for the great suggestions. I've decided to go with bitspower barbs (for the silver) and the masterkleer tubing. I've also decided on a single MCP655. Later on, I might go ahead and do a dual loop setup from a single resivoir. For now, it's just going to be the CPU until I can expand on my blocks (first I have to replace my graphics card). Any recommendations for using compression fittings on in specific areas or will barbs take care of everything as long as they are clamped properly?

After a bit of research, I'm going to order my stuff through jab-tech.
 
Masterklear is good stuff considring the price. I bought 20ft of it when i set up my UFO.

Compression fittings work the same as a clamp, its just prettier.
 
Picked up the 655 pump. I couldn't find any restrictions on how to mount this pump. So, can this pump be mounted any direction... if so, what is the best orientation to mount it?
 
Good choice, I have the 655 non-variable pump and it's been a champ. I prefer 1/2 inch tubing / 1/2 inch barbs with worm clamps...as 7/16 inch on 1/2 inch barbs is a pain in the ass to remove. If you change and mod your system frequently, I'd go with 1/2 inch tubing and worm clamps. If you know your going to leave your system alone once everything is put together, I definitely would go 7/16 tubing and 1/2" barbs. I'd still put clamps on it though for peace of mind.
 
spr0k3t said:
Picked up the 655 pump. I couldn't find any restrictions on how to mount this pump. So, can this pump be mounted any direction... if so, what is the best orientation to mount it?
Click to expand...

The pump can be mounted in any direction EXCEPT for when the inlet faces down (towards the center of the Earth).

And Mav, I don't really disagree with balancing loads on a NB/MOSFET loop, but having run 2 EK MOSFET blocks and a DD NB block on my old A8N-SLI with absolutely 0 degradation of cooling performance (7900GTX and 3800X2 might not have provided enough heat to showcase restriction based loss of performance)...

I would only term a loop restrictive if it's got a few full GPU blocks, and maybe some RAM blocks.
 
IMO the most important characteristics of a pump are size (how much room you have in your case (with the tubes, rad, rez, etc), head pressure, I'm not too concerned with flow characteristics. I let the tube size and loop design worry about the flow characteristics, probably as brother Arcygenical said "1/2" barbs with 7/16" Masterkleer tubes" would be the best for you. I use 3/8", but, ATM, I only have CPU loops.

I have a Laing D4 (MCP650) I got from a Petras Tech Shop sale (I just made sure it worked, I haven't used it yet, it is loud) and I'm currently using two MCP350's (pretty silent). :D I just trashed a XSPC top and I've got one on the way, IMO a great top :(

I've never had a MCP655 or a MCP355, but I imagine the reliabilty factor is about the same for both pumps (it really depends on who you talk to), but I read somewhere they had problems with the early DDC3.2 (MCP655), black rotor or red rotor or something rotor:confused: (the Laing D5 (MCP655) might be your best bet, but it is rather large, Swiftech is the best IMHO) As far as the space factor comes in, AFAIK, you can't beat the size of any DDC3.x pump (MCP3xx). On the head pressure deal, now thats a hard one. I know the head pressure is increased by the custom tops on the DDC3.x pumps (MCP3xx), but I don't know if it's increased for the Laing D5 (MCP655), there are several custom tops for it and more on the way. I do like the idea of the Laing D5 vario (MCP655 with speed controller)A DDC3.x (MCP3xx) is wide open all the time. As far as noise is concerned my MCP350's are very hard to hear after they've been bleed successfully. (in other words got all the air out) I like the ability of the Laing D5 vario (MCP655 with speed control), being able to reduce or increase the head pressure to meet my needs or reduce any noise that's audible (noise is respective to each individual) ;)

If I was to take a quess, with the restrictions you have CPU WB, GPU WB, and NB/Mosfets WBs I'd say ATM and AFAIK, you can get more "head pressure" out of the MCP355 with the XSPC custom top than the MCP655 (I don't know about the MCP655 tops). I may be wrong and I probably am, but thats my $0.02 cent worth. :cool:

DCing for the CURE
 
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