We are giving our opinions based on our experiences and what we have read just as you are. I have used at least 15 types over 12-14 years.Guys, OP is asking for the best thermal paste. Unless you've done testing yourself with a dozen pastes and have recorded the results, it would be nice for you to link reviews or other data so that the OP can get an objective answer to his question.
Amen. Google exists for a reason. We are assuming the best of the OP in that he wants the opinions of [H]'ers and not that he's too lazy to google.While I tend to agree, if OP wanted nothing but scientific results he/she could have just googled/searched for reviews on thermal paste.
People should use Indigo Xtreme between the cpu & integrated heat spreader on the Intel Ivy bridge chips that Intel didn't solder the heat spreader on. I likey my temps with Phobya He Grease & a Noctua NH-D14.
If you do a good job cleaning up the epoxy and lap the base of the IHS a bit like GTX480 owners were doing you'll end up with very good temps on Ivy with just some MX-2.People should use Indigo Xtreme between the cpu & integrated heat spreader on the Intel Ivy bridge chips that Intel didn't solder the heat spreader on. I likey my temps with Phobya He Grease & a Noctua NH-D14.
This isn't always true..I am also running a de-lidded cpu, except I am running an i7 3700K, with IC diamond..I applied a small rice grain sized amount to the die, then heated it for roughly 5 minutes with a 1850W hair dryer to make it soft like my MX-2..I then spread a THIN layer across the entire die, as IC recommended to me via email..SonDa5 makes a really good point in that if you have low pressure mount than nothing can match liquid metal pastes like Liquid Ultra or Indigo Xtreme. If you're using a de-lidded CPU or a push-pin mounting system then it might be worth it to invest in one of those pastes.
OTOH if you have a regular heatsink with good mounting pressure you have very little to gain. So it all depends on your situation, do whatever works for you.
I've seen a few people report that with their delidded ivy bridge cpus too. Its mostly that the CL ultra still performs well with a bad mount. I saw that much of a difference when I did a better job cleaning up the epoxy and lapping the base of the IHS a bit. So that was just fron correcting the mount.I like SonDa5 much as a fellow member, and have no personal axe to grind, but tests done by very well respected members going from IC Diamond to the IX and CL Ultra metal TIM did not create anywhere near a 19C drop, maybe 4-5C in the extreme cases..
Funny, you mention that you prefer MX-2..When I started this build I had a ton of MX-2, but it was getting nearly a year old, and while always kept away from light and extreme heat/cold, I was a bit leery..The reason MX-2 works so well is because it has a very high carbon content, just like Diamonds..(see what I did there?)I've seen a few people report that with their delidded ivy bridge cpus too. Its mostly that the CL ultra still performs well with a bad mount. I saw that much of a difference when I did a better job cleaning up the epoxy and lapping the base of the IHS a bit. So that was just fron correcting the mount.
Also IC diamond sucks. Its thick, its a pain to clean up, and its super sensitive to bad mounts. Most of the time mx-2 will actually perform better, at least in my experience.
I forgot to mention that with my latest mount of CL Liquid Pro I tweaked the mount with a .5mm layer of Fujipoly extreme around the die. I think it may be helping cool of PCB as well. My temps are really good with the last mount with the fujipoly thermal pad..
I feel SonDa5 is trustworthy, I just wanted more then one opinion, and one that offered cold hard facts like he does when he posts with data backing it up...
Stock heat sink was way hotter than my water loop. If I remember right with Intel Burn Test and stock heat sink at 4.5GHZ my 3570k was reaching TJ MAX temps of 105C on 1 core and others were about 100C.SonDa5, is your cooling setup allowing you to overclock the CPU higher than a regular heatsink?