E4600 / Q6600 Temperature Testing
Testing Methodology:
All comparison testing was done on an open bench with a constant ambient temperature of 20°C.
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, and due to the fact that the Scythe Kaze fan is not a variable speed fan all CPU fan speed control was also disabled in BIOS.
Arctic Cooling MX-2 thermal paste was used for all coolers during these tests unless otherwise noted. 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 fan, it was paired with a single Scythe F 120mm fan for the results listed in this review.
Notes about Overclocking:
For q6600’s that use 1.31volts 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 max 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 500GB
Power Supply: Seasonic S12 600W
E4600 Temperature Results
Idle Temperatures
With a cool running chip like the e4600 the Copper Ninja shows some amazingly low idle numbers. Even when overclocked to 3.5GHz it is 3°C cooler than an Ultima 90 and 7 degrees less than the Silentator which is down-right impressive.
Average Load Temperatures
As you can see the idle results are not due to the fact that the Scythe’s fan is a constant RPM model and thus was moving more air at idle than any of the other CPU cooling solutions; rather, this cooler is just that damn good at cooling dual core CPUs. In fact not only did it keep it lead on the Ultima 90 and Silentator it widened it out to double digits! Very, very impressive.
Q6600 Temperature Testing
Idle Temperature Results
While these numbers are not as low as the e4600, this is to be expected as the even the G0 stepping of the Q6600 are hot running little beasties. As we can see roles have been reversed at it is the Copper Ninja that is 2°C hotter than the Ultima at stock at this widens to 4°C when the CPU is overclocked to 3.4GHz. These are still some impressive results and it is only the Ultima 90 (with a higher RPM fan) that can claim to be better than the Ninja.
Average Load Temperatures
Once again the Copper Ninja displays some really good numbers, but once again the Ultima 90 is a slightly better cooler. Of course to get this advantage the Ultima 90 is using a relatively louder fan, and probably could not boast such good numbers if it had an 800 rpm fan.
Fanless Mode
Before giving the results that we got when using the Copper Ninja without any active cooling one must realize that even though Scythe states it can be done it is only to be done under light loads and is not intended for heavy loads. Since Scythe also states that sufficient case cooling is required this test was carried out inside a CM 690 case with 5 Scythe E 120mm fans running. After the testing phase the side door was removed so that we could touch the Copper Ninja to see just how hot it got.
When we paired this now fanless cooler with the e4600 it idled at 28°C, while under load it average about 51°C.
To put these numbers in perspective one simply has to look at the results of Intel’s Stock cooler and realize that Copper Ninja is almost as good as this stock cooler without any active cooling! These are amazing results and something I would not feel comfortable doing with many other coolers out there.
Unfortunately OC’ing is a different story all together and this cooler failed at anything besides very minor overclocks.
The Q6600 was not as forgiving as the e4600 and it idled at 33°C and barely passed under full load. During testing the copper fins got hot enough that just touching the top one was uncomfortable and would have burned us if we had left our fingers on it longer that a quick touch. Just as with the e4600, overclocking resulted in much higer idles (low 40s) and load testing was a failure due to sustained peaks above 75°C. At this point all testing was stopped.
In all honesty I do not see the need for running this CPP cooler in fanless mode as it requires a lot of air movement inside the case and in most cases (par the pun) the fans creating this air movement will be a lot louder than the Twelve Winds 800 rpm fan that comes with this unit. Like the old saying goes “If ain’t broken…DON’T fix it!”.