Testing methodology

Except where noted all comparison testing was done on an open bench with an ambient temperature of 20c. Recorded temps were as reported via CoreTemp's "Temp Log". Average load temps were taken after 15 minutes of running Prime95 v25.4 “small fft” and are taken directly from CoreTemps temperature text file. Excel was used to average the results of all cores. Idle temps were taken 15 minutes after Load testing ceased. Motherboard temperatures were recorded using SpeedFan. All CPU throttling technology was disabled in the BIOS but due to the fact that the Ultima 90’s Scythe F fan is voltage adjustable, CPU fan speed control was not disabled and rather was set to voltage only. The fan used on the IFX-10 is not a variable speed fan and thus all fan speed control for it was disabled.

Arctic Cooling MX-2 thermal paste was used for the Ultima 90, but the foam pad that comes with the IFX-10 was used for it. Application of all thermal paste was according to the manufacturer’s instructions and while not necessary it was allowed to cure for 48 hours under moderate to high loads (with periods of low loads) prior to testing. All tests were run 4 times and only best results are represented.

Please note: Because the Ultima 90 does not come with its own it was paired with a single Scythe F 120mm fan for the results listed in this review.

Please note: To keep the motherboard chipsets from overheating two 120mm Scythe E models were used, but they were orientated in such a way as to not interfere with nor help the backside cooler nor the Ultima 90 (i.e. they were basically pointed down and angled away from the IFX-10 and Ultima 90 so that no air was pulled near nor pushed towards them nor interfered with their air paths).

Notes about Overclocking:

For q6600’s I consider 1.45 volts to be the most that I would seriously consider for a moderate-to-long term overclock.Yes you can go much higher but the longevity of the CPU is then called into question. Just as importantly the CPU should average out at LESS than 65c as this is also what I consider the safest, maximum long term overclocking temp. For the purposes of these tests I was willing to overlook temperatures as long as they averaged below 70c and did not peak over 75c. If 75c was displayed for more than 10 seconds in CoreTemp all testing was stopped and that test run was considered a fail.

With these two general guidelines I overclocked both systems until either one (or both) of these "rules" was needed to be broken to continue.

Overclocking was accomplished by increasing FSB speed and then Vcore (only if necessary).

Before testing for idle and max temperatures Orthos was run for 1 hour to make sure that it was stable at a given overclock and voltage. If both finished with no errors SuperPi set to 32m was run twice. After the stability testing was accomplished the given system was allowed to sit idle for 30minutes before starting the official tests. IF both of the above stated guidelines were not broken then testing continued with an increased overclock. These steps were then repeated until 1 or both of the general guidelines were broken.

As they have no bearing on these tests the RAM’s voltage and timings are not recorded, the RAM was set to run at or as close to as possible PC-6400 speeds by running various cpu : memory dividers. Please do not consider this a full “how to” review on overclocking or “safe guidelines” for overclocking nor even an indicator on how well a given CPU will overclock. IF you are interested in OC’ing your system, and use these guidelines we at HWC take no responsibility for the results. Bad Things can happen if you are not careful.

Complete Test System:

Processor: Q6600 & E4600
Motherboard: Gigabyte p35 DS4
Memory: 4GB G.Skill PC2-6400
Graphics card: XFX 7200gt 128mb
Hard Drives: 1x Western Digital Se16 320GB (single platter)
Power Supply: Seasonic S12 600W
Fan for IFX-10: Panaflo medium speed 80mm fan

Since the InfernoFX-10 does not include a fan we have paired it with a Panasonic Panaflo 80mm Medium Speed Cooling Fan that runs at a nominal 2450RPM, moves 32.1CFM of air and is rated at a moderate 28DBA.