EK-FC8800 GTS Full Cover Waterblock
Published: 7th May 2007 | Source: SpecialTech | Price: |Testing Method
I have decided to impliment a control setup for the testing phase of this review. In doing so I have replicated a watercooling loop similar to that in conventional water cooled setups, but one that would return consistant and unbiased performance results. The first test conducted was for assessing the EK FC8800 GTS's capapacity for unhindered flow; the second test was to ascertain how efficiently the EK FC8800 GTS performed at cooling under real-life operating conditions.
The flow test was conducted outside of the case on a flat surface to reduce the possibility of 'siphoning' affecting the end result. Siphoning is essentially out of the scope of this review, and as such, I won't go into detail here but if you are interested in the theory then feel free to read about it here.
As I have stated above the flow test involved setting up a replica of a common, but restrictive watercooling loop. In order to gain a comparison between the EK FC8800 GTS waterblock, a Swiftech MCW60 GPU block was used. The components used in the test are listed below:
* 3 Litre capacity home-made reservoir
* 1 x DDC Ultra pump with Petra's top (run @ 12V)
* 1 x Swiftech Storm G4 Rev 2 CPU block
* 1 x Toyota Camry Heater core (fittings modded to take 1/2" ID tubing
* 1 x 'B-Meter' analogue dual jet flow meter / 90 deg C max watertemp capable: ISO 4064 compliant
* 1 x EK FC8800 GTS GPU waterblock
* 1 x Swiftech MCW60 GPU waterblock
* 1/2" ID tubing and barbs
For the flow test setup the reservoir and loop were filled with de-ionised water and the pump allowed to run for 1 hour to purge as much air from the loop as possible. Prior to the start of the test the number on the analogue counter was recorded and then the pump was allowed to run for 5 minutes and the number recorded again.
Three runs in total were made and an avarage taken to ensure uniformity of the results. After the conclusion of the third run, the loop was drained and the GPU blocks were switched over. After re-filling the loop and purging the air from it, the test began again, with the numbers recorded and averaged as before.
Real Life Test
In order to gauge the cooling performance of the EK FC8800 GTS block, this phase of the testing was conducted from within the confines of my PC case. The same loop was utilised for both waterblocks (FC8800 GTS and MCW60 respectively). During testing on the MCW60 waterblock, Swiftech MC14 BGA memory heatsinks were used to cool the memory (not ideal, but the only other block I had around at the time).
Both blocks received fresh applications of MX-1 TIM after each testing phase, and the loop was allowed to purge itself of air for an hour. A mixture of 90% de-ionised water and 10% Prestone coolant concentrate was used as the cooling medium for the loop. A list of the components used are listed below:
* CoolerMaster Stacker 830 case
* Intel C2D e6600 CPU
* ASUS P5B Deluxe wifi/app
* ASUS EN8800 GTS 640MB
* 2 x Seagate SATA II 250GB 7200.10 HDD's (RAID 0)
* D-Tek FuZion cpu block
* EK FC8800 GTS and Swiftech MCW60 gpu blocks
* 2 x Swiftech MCP600's (parallel)
* Radiical 120.3 radiator
* Xinruillian 120mm fans
* Custom reservoir
* 1/2" ID Clearflex tubing and 1/2" barbs
Prior to each testing run the water temperature was taken from within the loop via the 'T'. Each test run was given 30 minutes of idle time to reach uniform operating temperatures; idle GPU temperatures were taken along with the ambient air temperature from within the room at 30 minute intervals and again an average taken.
In order to simulate load temperatures for both the CPU and GPU, Stanford's Folding @ Home console (2 instances) and FutureMark's 3DMARK06 (Advanced Edition) were run, and an average taken after 3 complete runs of the benchmarking program. Riva Tuner (version 2.01) and the Nvidia Classic Control panel (driver version 97.94) were used to determine GPU temperatures at idle and load.
Let's move onto the testing phase....