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Thermal Pad Instead of Thermal Paste?

2017-06-14
it's about time we add a second video to our will it fry playlists in the first video we microwave to CPU definitely fried in this video I have an i3 73 50 K which should not exist it's a stupid processor don't buy it more details somewhere around here we're going to swap thermal paste which is kind of like the interface between a heat source and a heat sink with this right here a thermal pad now for those of you new to the scene thermal paste or thermal grease is sandwiched between typically a CPU heat spreader and a large CPU heatsink or a water block something that helps bridge the gap between the heat source which is the CPU itself and what is supposed to dissipate the heat the heat sink the compound in here and other variants supposed to be a great conductor of heat that's the point by the way to transfer heat from point A to point B as efficiently as possible but thermal pads which do the same thing in essence are not expect the same these are meant more for prm's via RAM modules things that get hot but not you know 100 degrees Celsius hot so the mitigation technique is the same but you wouldn't want to use this between a CPU and a heatsink we're going to do it anyway in this video okay so in goes the CPU now we're going to run two tests one will be of course our control our control test will consist of just typical thermal paste application we're going to use some Noctua in th one here it's good thermal thermal grease so we're going to slap some of this on then we're going to use the cryo rig c7 to cool the CPU and then after we've run our tests we'll run a few benchmarks to CPU synthetics will record temperatures we will remove the cooler remove the thermal paste and then apply the thermal pad and in case you're wondering this is three millimeters thick so here we go with the control test first slap some of that on there alright in before the oh that's too much thermal grease bro or that's too little man you should have put more than that that's fine trust me it's fine don't forget to remove your warning label alright slap this one right on top there all right good to go that's literally all we need to do now let's plug it in and some benchmarks this is a beautiful LED combo by the way okay Cinebench first remember this is with the thermal paste the temperatures should be completely fine here running its stock frequencies by the way and the fan curve is just whatever the fan curve was in the system bios out of the box okay so max temperature with Cinebench was right at 60 degrees Celsius so we will take note of that by the way if you're wondering seventh or at stock speeds 4.2 gigahertz turbo boost was 454 CB it's been exit out of that one now I'm sure we can save that now you're probably wondering why on earth I am running benchmarks and not just I 264 which is kind of a CPU stress test that's because if this CPU does thermal throttle at all we will see actual like differences in scores that's just something else to reiterate here I'm not saying that it's going to happen but it's likely that it will it's probably in a thermal throttle when we swap the paste for those thermal pads all right and now Geekbench here we go the highest temperature running Geekbench for was 55 degrees fahrenheit now it is time to swap the thermal grease on top of the CPU spreader here for a thermal pad not sure if I said this already but don't try this at home big waste of time not worth it period clean off the thermal paste here and on the CPU cooler and then just slap one of these pads on there I'll try to cut it down to size about the size of the die itself alright let's see something like that yeah that should do it's not a bad sign oh this almost this almost hurts it would hurt if I cared about the CPU CPU stupid dust or they care all right the CPU cooler back on there and plugged in to go ahead and give it a go alright so right off the bat idle temperatures are a bit higher we were in the low 30s before now we're in the low 40s and Cinebench here we go okay temperatures are going up and up we're in 70 72 74 75 76 this is not good 77 79 on Jesus 80 91 degrees Celsius 92 please 92 Oh okay so things are freaking hot right now 92 degrees Celsius 94 we almost hit T Junction if I'm not mistaken this is not good at all okay now I'm going to rerun Cinebench because our score was pretty much the same here or score was 451 CV which is only four lower than our previous run so because the CPU is nice and toasty now I'm going to rerun Cinebench to see if we can instigate that thermal throttling we were talking about earlier well on that run exactly the same score 451 again so we're not thermal throttling and if we are it's I mean that's barely happening because our score is basically the same it's kind of weird I assume that if we had kept running the Cinebench test over and over eventually would have thermal fatigue and see this is basically both Cinebench runs here so we would approach the T Junction and once we hit it it would probably throttle by about five to ten percent to keep the temperatures around 90 95 degrees Celsius any more than that and yeah not good for the CPU so it makes sense that we're barely throttling if we didn't have any thermal pad at all any thermal interface between the CPU and the heatsink I imagine we would thermal throttle almost immediately all right and max temperature for Geekbench four it looks like was about 69 degrees Celsius so that's about 14 degrees higher than it was with our control test the thermal pad looks to be in pretty good shape though so there's that now there are a couple things we could take away from this weird experiment you might be wondering why the heck we even bother trying it out because I was curious mainly but you can also learn a thing or two here the first is that both of these are still good mediums of exchange between heat sources and heat sinks the second is that you should use this for your CPU and not this I mean you can so use this I guess I mean you'd have a lot of thermal throttling issues you'd probably have a very loud system because your family be compensating for all that heat that's not being dumped from your CPU and but the thing about CP is nowadays is that they're so a well-engineered but it's difficult to force a CPU to overheat and explode or they'll shut your whole system down there are so many fail-safes built into these systems into these CPUs nowadays it's getting pretty difficult to just fry one so with that I guess it didn't fry and that's kind of to be expected at this point but I have a few more things up my sleeve for a couple other videos in the future on this playlist I think I'm going to try over volt in the CPU maybe like 3 volts or something ridiculous see if we can kill the CPU then I don't know suggest things in the comments we'll see what we can do to kill the I 373 50k with that if you liked the video be sure to give it a thumbs up thumbs down for the obstacle subscribe but if you haven't already I'll catch you in the next video this science to do thanks for learning with this you
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