OK - Some figures to ponder:Total length of acrylic tubing runs in build - 2424mm
- 16mm OD acrylic used throughout buildSystem coolant capacity - 4500mL
[Coolant utilised - Tectaloy 60 Plus - Auto based glycol coolant]Total number of Bitspower fittings utilised - 180
Flow figures for system:
Max Flow with 2x D5's @ 100% is just a tad over 1.4 GPM (Actual achieved is 1.43 GPM) - Yes, even with the relatively large amount of 90 degree fittings and other snake & elbow fittings this build utilises, it still manages to achieve an optimal flow rate.
To tell you the truth - it did surprise me a little in that we all read (scary rumours..
) of 90 degree fittings being somewhat restrictive on the forums and to avoid them like the plague - yet not many actually measure this effect.
This build goes some way in solidifying Martin's original (Martins Liquid Lab) findings on testing the impact of 90 degree fittings where he generally found only minimal impact on flow rates.
Off the top of my head, here are some of the (what I would consider) best features of this build:*
Aesthetics - Primarily a personal chopice of course but I specifically stuck to accurate vertical and horizontal tubing runs while utilising the less commonly seen larger sized 16mm acrylic tube. Combined with the 'larger' elbow style (Bitspower L-Block) fittings it results in a strong 'industrial' style/look which is primarily what I was aiming for.*
One design feature that is not immediately obvious (but caused some head scratching with regards to eventual cable routing, overall GPU length etc) is that I offset both reservoirs as far left as possible which results in the RHS reservoir still being fully visible through the window with side door closed.*
Case holds 3x 560 radiators all set to intake fresh cool filtered air - no radiators using pre-heated airflow as an intake. To me this was an important design criteria as many builds have rads which intake using preheated air from another rad affecting the rad's overall cooling efficiency.*
Single loop design - Total 3x 560 radiator cooling capacity shared across all water cooled components.*
Acrylic tubing run out from GPUs is not run directly straight down through the midplate - This allows maximum flexibility for easy tubing re-arrangement of different video cards (specifically differing coolant port positioning on blocks).
No need to re-drill or reposition pass-throughs through the midplate.
The midplate is the most difficult panel to remove (requires total case disassembly) so I decided early on that the tubing run out from the second GPU would not be through the midplate but simply be offset and passed through the rear motherboard panel. I extended the very front horizontal lower tubing run (section connected to long vertical tube) so that it would simply match the lower GPU tubing run to maintain some form of symmetry.*
After modification (Bitspower Aquapipe addition), the Photon reservoirs IMO are now one of the best in class as far as bleeding and overall performance is concerned.
The fact that the inlet tube is on the bottom forcing air bubbles upwards working in conjunction with the internal deflection plate works extremely well in isolating incoming air bubbles from the outlet. Also due to their parallel configuration not only is overall restriction reduced, but the whole air bleeding process is now extremely short.
Now that the build is coming to a close I will capture some cooling performance stats and post them up at a later stage. However - so far, while overclocking and stress testing etc it has been awesome to have all that cooling reserve/capacity that the 3x 560 rads provide - while at the same time keeping the fans barely rotating @ 550rpm....