Originally Posted by Unicr0nhunter
Years ago (~2010-ish?) when Arctic first came out with their MX-4 I used it to replace their Arctic Silver 5 that I was using first just on one air cooler and was pleasantly surprised by the improved temps I got, so I set out and replaced the AS5 TIM on every cooler in the house, iirc 5 in all at the time, and saw at least that 1C improvement on every single one of them and never went back to AS5 after that.Warning: Spoiler! (Click to show)
Then around 2 yrs or so ago in the OCN Watercooling Club thread, back when I was still lurking here and was still contemplating making the switch from CLC AIO to a custom loop, there was a long discussion where it was nearly unanimous that the most recommended TIM by a dozen or more members was GeLid GC Extreme, with only a few people recommending something else like Coolaboratory's or Indigo Extreme's products which are extraordinary but have some serious drawbacks as well and can't really be compared to a thermal paste. So I gave GC Extreme a shot and similarly saw across the board at least a 1C improvement as I replaced the MX4 on all of our air coolers, and especially on the H110 I was using at the time over whatever came on it and if I'm not mistaken I believe it came with Shin-Etsu TIM.
Thermal Paste Comparison: 39 Products Get Tested
http://www.tomshardware.com/reviews/thermal-paste-performance-benchmark,3616.htmlWarning: Spoiler! (Click to show)
In fact, all the temp improvements I've seen through my shifts in preferred TIMs are reflected pretty well in this 2014 test ..
And though Shin-Etsu wasn't included by name in that test they did test the "thermal paste bundled with Corsair's coolers" which iirc depending on which of their AIOs they are talking about used either Shin-Etsu or another TIM that the OCN Corsair rep (George I think it was) said a few years back was "superior" to the Shin-Etsu. In either case the Corsair TIM and the AS5 fared ok in that test but nothing spectacular. There's just no way I would ever go back to using AS5, not even if it was free. It's just not even close to being in the same league as Gelid GC Extreme (aka Phobya HeGrease) and if anyone is putting Shin-Etsu alongside 'Arctic Silver 5 as the two best TIMs available', well, that's an argument I just can't buy into.
In that comparison you sent, you're looking at a difference of 1.2c between your GeLid GC Extreme(31.8) and AS5 (33.0) for the closed loop liquid cooler with high mounting pressure . How you can say that 1.2 degrees is not in the same league, well I don't get you point there. In fact, knowing how the temperature can fluctuate during testing, 1 degree is pretty much a margin of error. There is also no mention in the article of waiting for the curing time to pass for AS5. From my own experience, you can get another 1-3c improvement after the curing time.
Note that AS5 is only 3 degrees more than the liquid ultra, which is a metal TIM. This shows the AS5 performing really well in my opinion.
As for the author of the comparison, well usually I like Tom's, but in this case his description of AS5 in not very accurate. His own results show AS5 for be an excellent TIM for AIO water coolers. Even this same comparison showed AS5 (without curing I assume) to be .4 degrees better than the Corsair TIM (which is Dow Corning). I consider .4 degrees to be almost unmeasurable, other than by using mathematical averages. So, basically AS5 and Corsair's TIM are tied, yet the author likes the Corsair TIM but feels that there's something wrong with AS5. From the article: "However, it shows its age and does not keep up with the best pastes out there today.", while his own data clearly show AS5 keeping up just fine.
As I mentioned, there are quite a lot of really great TIMs available, all within about 3c of each other. There has never been such a wide variety of quality TIMs available before.
As I said, I have been using it since it came out and it has always performed well for me. I have no idea why you were getting such high differences, however if you're talking one degree then personally I wouldn't consider that even worth the time to change the TIM.