Water Cooling Help


Jun 17, 2009
Hello all,

I have been doing some reading and have some questions based on my homework, I recently upgraded my entire pc, I have an Antech 1200 case, I am not happy with my temps currently with air cooling so I have started investigating liquid cooling.

This is my first time for water cooling, and I am trying to be prepared before the parts arrive, I also am finding it difficult to order all the parts connectors clamps etc, and secondarily visualize or draw out the flow of water through the system, which I believe has to be a dual loop configuration bc i have dual gpu's that draw 298 watts a piece lots of heat! here are my specs to start off.

Windows Vista™ Home Premium 64 BIT

Dual BFG Tech BFGEGTX2951792E GeForce GTX 295 1792MB 896 (448 x 2)-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI

ASUS 24 Inch VW246H using a DVI connection. 2 ms refresh

Intel Core i7 Extreme Edition 965 Nehalem 3.2GHz 4 x 256KB L2 Cache 8MB L3 Cache LGA 1366 130W Quad-Core Processor
OverClocked to to 3.8 GHZ

ABS Tagan BZ Series BZ1300 1300W ATX12V / EPS12V SLI Ready CrossFire Ready Modular Active PFC Patent Piperock Modular Power Supply

Antec Twelve Hundred Black Steel ATX Full Tower Computer Case - Retail

Mother Board
EVGA E758-TR 3-Way SLI (x16/x16/x8) LGA 1366 Intel X58 ATX Intel Motherboard

My mother board manual is here http://www.evga.com/support/manuals/files/132-BL-E758.pdf

So basically I have read up on the system components I think I need, I will be cooling the following components Dual GTX 295's in SLI they are in slots 1 and 2 of my mother board which are right on top of each other, this is because those two slots operate at 16x or 8GBS, the pci express slot at the bottom of the mother board is a x8 slot. I will also be cooling the north and south bridges and the cpu, I am most concerned with having my video cards being the coolest I use the dummy oc feature in the evga mobo but nothing more for cpu overclocking yet! :)

I have looked up the following components and connectors, hoses etc for the system, can someone please take a look and tell me if I am on target missing anything, or any advice?

For my cable width I used http://www.primelineindustries.com/pdfs/sizechart.pdf

I believe I will be running 1/4 off the back of the cooling unit it will be 3/8 inside the case, then 1/4 inch to the water blocks then converted back to 3/8 although for the cooling unit I was a bit confused it says it has 1/4 entering and exiting but then it says it supports 3/8 inch

This is form the web site for the Koolance Exos-2.5

"The Exos-2.5 features rear G 1/4 threaded inlet and outlet nozzle sockets (nozzles are not included). This allows any Koolance G 1/4 nozzle or threaded quick-disconnect to be added to the unit. Like all Exos systems, the Exos-2.5 will connect with any PC through a standard rear card slot. This is ideal to avoid any modification to the computer chassis.

NOTE: The included Exos Slot Adapter will accommodate tubing up to 3/8" (10mm) ID, 1/2" (13mm) OD. If using 1/2" (13mm) ID tubing, Koolance recommends the BKT-PCI-G with your preferred nozzles."
I have used the following guides to help me come to this point


Installing the Koolance VID-NX295 GPU waterblock

Review of the VID-NX295 GPU Waterblock

Here is the is the list of equipment I have compiled.

External Cooling System
Liquid Coolant Bottle, High-Performance, 700mL (Fluorescent Blue)
Nozzle Pair, G 1/4" Barb [For ID: 10mm (3/8")]
3 Feet of Tubing, Clear UV-Reactive PVC, 1ft/30.5cm [ID: 10mm (3/8"); OD: 13mm (1/2")]
3 Feet of Tubing, Clear UV-Reactive PVC, 1ft/30.5cm [ID: 06mm (1/4"); OD: 10mm (3/8")]

Gpu Water Block x2
Nozzle Pair, G 1/4" Barb [For ID: 10mm (3/8")]
Nozzle Pair, G 1/4" Barb [For ID: 10mm (3/8")]

CPU Water Block
Nozzle Pair, G 1/4" Barb [For ID: 10mm (3/8")]

North Bridge Water Block
Nozzle Pair, G 1/4" Barb [For ID: 10mm (3/8")]

South Bridge Water Block
Nozzle Pair, G 1/4" Barb [For ID: 10mm (3/8")]

Tubing Splitter, F 10-6mm (Plastic)
Tubing Splitter, F 10-6mm (Plastic)
Hose Clamp [For OD: 10mm (3/8")]
Hose Clamp [For OD: 10mm (3/8")]
Hose Clamp [For OD: 10mm (3/8")]
Hose Clamp [For OD: 10mm (3/8")]
Hose Clamp [For OD: 10mm (3/8")]
Hose Clamp [For OD: 10mm (3/8")]

Any feedback would be greatly appreciated,





Jan 7, 2009
Errrr... do you really need two GTX 295s? You're "only" using a 24" monitor, and a dual-295 setup is designed to drive two 30" monitors at the very least. Try taking out one; I guarantee your heat problem will be reduced significantly.

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