Cooler Master GeminII: Performer or Poser?
by Wesley Fink on April 30, 2007 2:00 AM EST- Posted in
- Cases/Cooling/PSUs
Cooling at Stock Speed
Some users will never overclock their CPU, but they still want to run the coolest CPU temperatures possible to enhance stability and extend CPU life. The Cooler Master GeminII does not come with fans, so we tested with four fan configurations as detailed on page four. Since there was little difference in performance among the four fan configurations results are reported with the dual Noctua SF12 configuration. This was the only tested configuration that managed to hold noise below the system noise floor while still cooling at temperatures very close to the high-output 110+63CFM fan configuration.
Where the very good Intel stock cooler keeps the X6800 at 41C at idle, the CoolerMaster GeminII manages 30C in most fan configurations. This is a significant improvement over the Intel stock cooler performance, but it is still far from the best we have tested. The Thermalright coolers, at the top of our heatpipe tower performance charts, cool to 26C and 27C, and the Tuniq 120 maintains 27C. The GeminII is obviously not the best stock idle cooler we have tested, but it is broadly competitive.
It is more difficult to effectively simulate a computer being stressed by all of the conditions it might be exposed to in different operating environments. For most home users CPU power is most taxed with contemporary gaming. Therefore our stress test simulates running a demanding contemporary game. The Far Cry River demo is looped for 30 minutes and the CPU temperature is captured at four second intervals with the NVIDIA monitor "logging" option. The highest temperature during the load test is then reported. Momentary spikes are ignored, as we report a sustained high-level temp that you would expect to find in this recording configuration.
Cooling efficiency of the GeminII was compared under load conditions at stock speed to the retail HSF and other recently tested CPU coolers.
The GeminII under load at stock speeds reached a maximum temperature of 39C with most fan configurations. Best performance was with a Silverstone 110CFM fan plus Scythe SFLEX configuration at 38C. This was only 1C cooler with a big increase in noise. This performance compares to the Thermalright coolers at 32C and 33C, the Tuniq at 34C and the Cooler Master Hyper 6+ and Zalman 9700 at 36C. Stock load performance is average at best among tested coolers.
Some users will never overclock their CPU, but they still want to run the coolest CPU temperatures possible to enhance stability and extend CPU life. The Cooler Master GeminII does not come with fans, so we tested with four fan configurations as detailed on page four. Since there was little difference in performance among the four fan configurations results are reported with the dual Noctua SF12 configuration. This was the only tested configuration that managed to hold noise below the system noise floor while still cooling at temperatures very close to the high-output 110+63CFM fan configuration.
Where the very good Intel stock cooler keeps the X6800 at 41C at idle, the CoolerMaster GeminII manages 30C in most fan configurations. This is a significant improvement over the Intel stock cooler performance, but it is still far from the best we have tested. The Thermalright coolers, at the top of our heatpipe tower performance charts, cool to 26C and 27C, and the Tuniq 120 maintains 27C. The GeminII is obviously not the best stock idle cooler we have tested, but it is broadly competitive.
It is more difficult to effectively simulate a computer being stressed by all of the conditions it might be exposed to in different operating environments. For most home users CPU power is most taxed with contemporary gaming. Therefore our stress test simulates running a demanding contemporary game. The Far Cry River demo is looped for 30 minutes and the CPU temperature is captured at four second intervals with the NVIDIA monitor "logging" option. The highest temperature during the load test is then reported. Momentary spikes are ignored, as we report a sustained high-level temp that you would expect to find in this recording configuration.
Cooling efficiency of the GeminII was compared under load conditions at stock speed to the retail HSF and other recently tested CPU coolers.
The GeminII under load at stock speeds reached a maximum temperature of 39C with most fan configurations. Best performance was with a Silverstone 110CFM fan plus Scythe SFLEX configuration at 38C. This was only 1C cooler with a big increase in noise. This performance compares to the Thermalright coolers at 32C and 33C, the Tuniq at 34C and the Cooler Master Hyper 6+ and Zalman 9700 at 36C. Stock load performance is average at best among tested coolers.
Facebook
Twitter
RSS
44 Comments
View All Comments
PICBoy - Monday, April 30, 2007 - link
I know it's been a a while since Wesly reviewed the Katana and this space is reserved for the recently reviewed heatsink.But I wanted to know if AT is planning on a review about the "Katana 2" (now available @ FrozenCPU). I hope it's better than the Katana Cu and the regular Katana. I even hope to see it close to the Ninja!
That's all. Thanks!
Rocket321 - Monday, April 30, 2007 - link
I think this is an error at the bottom of page 2.
Wesley Fink - Monday, April 30, 2007 - link
Both editing errors corrected.herbiehancock - Monday, April 30, 2007 - link
I do appreciate the heatsink reviews AT and Wesley do...........but I have some observations to make about them.First, Wesley absolutely gushed over the SilenX fans....and was wowed by the 14dBA rating! Gosh....so quiet!
It certainly is too bad that Wesley did absolutely no research into the fans or testing of them. If he had he'd have found out they are absolutely nothing special and are mediocre at best. SPCR has done an indepth test of the SilenX fans and found their dBA ratings are just hype and bogus....the fans actually created a sound rating of 34dBA or worse....and their air output was bested by comparable fans such as the S-Flex SFF fan lineup....not the monster 110cfm fan that is included in the overly loud ratings, but maybe the SFF21F fan that produces 70cfm at an honest 31dBA. Or use the next level down...the SFF21E...producing 51cfm at an honest 23dBA.
But, then again, when you rate the loudness of your fans by taking sound readings from 1M away from the fan, take them on 3 axes (one on axis with the fan...two off-axis and therefore oblivious to the noise production), and then take the mean of the three readings, I'm sure I could get almost any fan out there to achieve around 14dBA.
Naturally, the sound production of SilenX fans does not address their overly small motors, either. User after user has commented on the fact that after extended use, the small motors of SilenX fans tend to heat up a LOT more than fan motors of more normal sizing. But....when you source your fans from Globe Fan as SilenX does, and Globe is not the best producer of quiet fans, what do you expect?
Second, why even post sound ratings of any of the heatsink/fan combos when they are all drowned out by the noisy power supply? To just show hs after hs sound ratings that are almost all at 47dBA....that's meaningless information. All we know is that the power supply is making that much noise. Nothing about how much each hs/fan combo is producing.
My suggestion is to test the hs/fan combo in question mounted on a mb separately from a power supply's contamination. You don't have to have a darned thing heating it up to make the fan run at full speed to see how loud the fan is at full tilt. Alternatively, there are methods of producing a heating device a heatsink can mount to to test cooling capacity and sound production at various levels of cooling....all without having the contamination of the pwoer supply's fan.
yyrkoon - Tuesday, May 1, 2007 - link
AM I missing something here, or was this review concerning a new heatsink, or a fan, that some other sites are 'waring' over ? I am really, really, getting bored with you whiners, that feel it nessisary, to spread your unhappyness all over the internet.In case it has not been made obvious to you, and the other whiners, that the AT staff view themselves as a real world application type reviewer, I DO NOT CARE how quiet the fan really is, so long as it is quieter than the rest of the components in the system( I know I am not alone here). I am sure, the specifications AT gave out, where copied directly from the box, or given to them by the manufactuer. Now, if you really feel it nessisary to know the true specifications, go read about the fan at some other site, that has nothing better to do, than whine about how quiet a fan really is.
Let me know if the above text is too complicated to understand, and I'll be happy to throw in a few 'goo goo's', and 'gaa gaa's', just for you.
xsilver - Tuesday, May 1, 2007 - link
maybe a good compromise can be made on this whole fan noise issue.maybe AT can test the HSF as a separate setup to the system(psu).
With the graph though they can have a line going through it for where the system noise should be; so you have the noctua/sflex etc. with lower bars but then a great big red line at 47/38.3 db saying "your psu noise is most likely here you knob!"
that should put all the naysayers to rest.
yyrkoon - Wednesday, May 2, 2007 - link
Maybe each individual AT reader could send the AT staff $100usd daily for their time ? Possible, but not likely.Seriously though, as an outsider looking in, I do not think it is in ATs best interrest to do so. Each seperate test takes time, and time is money . . .
stromgald - Monday, April 30, 2007 - link
As a member of the SPCR community, I haven't heard anything about the issue with small motors. Also, there are several very good Globe fans in terms of quiet computing. Check SPCR's recommended list. I believe there are one or two Globe fans on there.Most SPCR members will tell you that SilenX aren't the best, but they certainly aren't the worst. Misrepresentation of noise and airflow levels are rampant in the industry and has been demonstrated by several websites. It's nothing new or particularly bad that SilenX misreperesents their numbers. The rift between SilenX and SPCR does not come from their hardware, but a marketing ploy SilenX tried on SPCR forums.
Even as a silent PC enthusiast, I don't expect AT to do SPCR level testing. I just want consistent testing for all products, and testing that is close to real world applications as possible, with discrepancies from real-life application pointed out clearly.
The drown-out issue is important though. Even though most environments have a sound 'floor', I think AT should consider using a quieter PSU (Seasonic or Corsair) or passive graphics card when doing cooling tests. A reference 'everything off', quiet room reading of the sound meter would also be greatly appreciated in the noise readings, and wouldn't be hard to do.
strikeback03 - Tuesday, May 1, 2007 - link
5th paragraph on the Noise page of the review.
Wesley Fink - Monday, April 30, 2007 - link
It is clear SilenX and some SPCR readers had a war some time ago and feelings still run deep. We were not part of that war. We can only report what we found, which was the SilenX fan cooled well and improved performance at below system noise floor on the heatsinks we tested with it. Performance was improved over the stock cooler on some heatsinks and not on some others.As we have said repeatedly, there is a place for testing fans in isolation separated from a real world power supply. You will not find those kinds of fan tests at AT. We are revising our test bed to further lower noise, but noise measurements will still be with a balanced system capable of enthusiast level performance.
Those interested in silence only need to look at other sites that specialize in that approach.