One pump or Two?

Ok so my current set up it this
Thermaltake Armour LCS. I added a Aqua Bay M1 to the loop and a t-type temp fitting all in 3/8" the current rad is a dual 120mm in and out on the top side mounted in the front of the case with fans pushing air on the rad into the case.

Setup planning on upgrading to.
1. Swiftech MCRES-MICRO Small Form Factor / High-Flow Reservoir (1/2" ID & 3/8" ID)
http://www.frozencpu.com/products/2...Flow_Reservoir_12_ID_and_38_ID.html?tl=g30c97

2. Swiftech STORM Extreme Performance Universal CPU Waterblock - Revision 2
http://www.frozencpu.com/products/1...al_CPU_Waterblock_-_Revision_2.html?tl=g30c85

3. Swiftech MCP655™ 12v Water Pump w/ 3/8" Conversion Kit (317 GPH)
http://www.frozencpu.com/products/2...38_Conversion_Kit_317_GPH.html?tl=g30c107s155

4. Danger Den Black Ice GT Stealth 240 X-Flow Radiator - Black
http://www.frozencpu.com/products/4...40_X-Flow_Radiator_-_Black.html?tl=g30c95s160

5. Danger Den Fillport - Black (mounted on the top of the case dropping coolant into the top of the res)

6. Danger Den DD-GX2 GPU Liquid Cooling Block (nVidia 7950 GX2)
http://www.frozencpu.com/products/5...Cooling_Block_nVidia_7950_GX2_.html?tl=g30c87

Now i ask One or Two pumps due to the fact that im am throughing in the DD_GX2 block. If that was not in the loop then i would only run One pump.

Current pic of setup:

Is you rad in the front of your case there?

Why are you planning on using 3/8" tubing? I would strongly suggest using a 1/2" system. If you are set on using 3/8" tubing you should just get an MCP350/355 (has 3/8" barbs) instead of the MCP655.

One MCP655 is plenty ...

Would you put them in series or in parallel? Because if you put two in series you will be limited by whichever pump has the lowest flow rate. I think that putting them in parallel would increase your head pressure but I am not sure how much. Either way, I think that one MCP655 should be able to easily handle that load.

No no no, my current setup is on 3/8" ans yes the rad is mounted in the front of the case in those pics here is a better pic. Yes those inserts are perferated if i put my hand in the front of the case i feel air being pulled in.



I am planning on jumping up to 1/2" line on the new setup.

Loop was looking at this pattern

1. Res out to pump in
2. Pump out to DD-GX2 in
3. DD-GX2 out to CPU block in
4. CPU block out to rad in
5. Rad out to res in
6. Fill port dumps into top of the res (strictly used only to add fluid, not as an mini res as in some other setups.)

If i needed two pumps then i would look at putting the second pump right after the CPU block into the rad.

or

Res outlet has a y split to both pumps in, pump #1 to DD-GX2, pump #2 to CPU block. Both DD-GX2 and CPU block out go to another y split into one tube going into the rad inlet. Then rad outlet to res inlet.

just an idea. but i think i'm going to stick with the first idea, don't know if 1 or 2 pumps. maybe 1 will do good.

I dont think you need two pumps, especially two different ones.

just sell the spare.

One pump should be enough.

Moded Mcp355 or DDC+ might be better due to the higher delivery head and less heat dump. Though mcp355/ddc+ if purchased moded it will cost more than mcp655. If purchased and moded through guide on your own, it should cost less. Mcp655 is still good choice and will do the job.

Ok, so one pump it is. thanks a lot guys.