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  Topic Review (Newest First)
06-16-2019 02:59 PM
TwilightRavens
Quote: Originally Posted by Falkentyne View Post
This works as long as you use a very small amount.
The main issues are :

1) RTV silicone expands as it hardens, if you use too much, this will cause the IHS to move upwards after it cures, which will cause terrible temps.
2) a tiny air gap is best left around the sides of the IHS (if possible) to help against thermal expansion and contraction. If the entire IHS is sealed airtight, this can cause a lot of problems (I believe this was discussed earlier in this thread).
The tiny 4 dots in corner method thus works well to satisfy both criteria. This also makes it easy to delid again without using the re-lid tool.
Yeah I used a very minuscule amount, like maybe not even 1/4th as much as Intel did on it originally. Thought about lapping the IHS to shave a few degrees off so I can do a 24/7 4.5GHz overclock but probably won’t make much of a difference when pushing the 1.49v though it that takes to get it semi stable.

Only lapped one CPU and that was my old Xeon X3230 (Q6700 equivalent) and it helped quite a bit but this IHS isn’t nearly as concave or convex as that was.
06-16-2019 12:29 PM
Falkentyne
Quote: Originally Posted by TwilightRavens View Post
On mine I just squeezed some out onto a plate and spread it around very thinly with a toothpick on the bottom of the ihs, zero issues so far and its been a little over a year.
This works as long as you use a very small amount.
The main issues are :

1) RTV silicone expands as it hardens, if you use too much, this will cause the IHS to move upwards after it cures, which will cause terrible temps.
2) a tiny air gap is best left around the sides of the IHS (if possible) to help against thermal expansion and contraction. If the entire IHS is sealed airtight, this can cause a lot of problems (I believe this was discussed earlier in this thread).
The tiny 4 dots in corner method thus works well to satisfy both criteria. This also makes it easy to delid again without using the re-lid tool.
06-16-2019 11:52 AM
TwilightRavens
Quote: Originally Posted by Falkentyne View Post
That's exactly why you seal with 4 tiny tiny dots of RTV silicon around the corners of the IHS and don't just apply it floating.
You do that and you never have to deal with the IHS moving when you reseat it.
On mine I just squeezed some out onto a plate and spread it around very thinly with a toothpick on the bottom of the ihs, zero issues so far and its been a little over a year.
06-16-2019 05:33 AM
Falkentyne
Quote: Originally Posted by Imprezzion View Post
Meh, I should've glued my IHS back in my 7700K.

I've been switching boards a couple of times now and still haven't really found the board I wanna have (MSI Z270 M7 or Titanium) but my IHS isn't glued on. Just held in with the retention bracket and the CLU itself.

I think it must've moved a bit as temps are "fine but at least 8-10c higher then they used to be before remounting the CPU like 6 times in the past week..

I have CLU on it now but I ran out of it. I do have some new Conductonaut tho..

Is it worth remounting the IHS with new Conductonaut in stead of 3 year old CLU?

I'm running 4.9 @ 1.308 with low 70's Prime AVX load and low 60's game load. The CPU has been capable of doing 5.0 @ 1.368 but that gets too hot now.. mid to high 80's while it always ran high 70's..
That's exactly why you seal with 4 tiny tiny dots of RTV silicon around the corners of the IHS and don't just apply it floating.
You do that and you never have to deal with the IHS moving when you reseat it.
06-16-2019 02:50 AM
Imprezzion Meh, I should've glued my IHS back in my 7700K.

I've been switching boards a couple of times now and still haven't really found the board I wanna have (MSI Z270 M7 or Titanium) but my IHS isn't glued on. Just held in with the retention bracket and the CLU itself.

I think it must've moved a bit as temps are "fine but at least 8-10c higher then they used to be before remounting the CPU like 6 times in the past week..

I have CLU on it now but I ran out of it. I do have some new Conductonaut tho..

Is it worth remounting the IHS with new Conductonaut in stead of 3 year old CLU?

I'm running 4.9 @ 1.308 with low 70's Prime AVX load and low 60's game load. The CPU has been capable of doing 5.0 @ 1.368 but that gets too hot now.. mid to high 80's while it always ran high 70's..
06-15-2019 10:58 PM
DiGiCiDAL
Quote: Originally Posted by NIK1 View Post
Thanks for the info..I thought i had screwed something up in the delid maybe.

If you did, I haven't had one go 'right' in the past 10 years. Windows has more background processes now than ever before... even without AV and other things... there's basically always something running in the background.


Core delta at load is a much better indication of how well distributed the temps are (and even it's not perfect - since the cores themselves have a variance from the factory in most chips). Your temps look about as close as you can expect unless you pull some unicorn from the silicon lottery.
06-09-2019 10:16 PM
NIK1 Thanks for the info..I thought i had screwed something up in the delid maybe.
06-09-2019 09:44 PM
TwilightRavens
Quote: Originally Posted by NIK1 View Post
I delided my i7-7700k last week and used liquid ultra on the die.Relidded and did some testing.Ran RealBench for 1.5 hrs and the cores were 64 65 67 69 cel with a 5.0 oc at 1.375 volts.Before the delid it was in the high 80's low 90's.One weird thing though.Idle temps are fine 29-30 but sometimes spike up to 50 cel for a split second then back to 30.HWMonitor shows all 4 cores do this about once or sometimes twice spike during idle with that 20 cel jump for 1 or so seconds.But when stressing there is no spiking and all the cores are pretty much within a few degrees of each other.Core 0 and core 3 there is a 6 cel spread though.Anyone know or have any ideas on what might be causing the idle 20 cel spikes for the split second.It only happens like twice per minute when I was watching HWM and Not at All when Stressing.I have never seen this before..
That's normal, probably a background service of windows doing something that causes the load to quickly jump up would be my guess. Both my old soldered Core 2 Extreme QX9650 and delidded i7-5775C do it.
06-09-2019 07:45 AM
NIK1 I delided my i7-7700k last week and used liquid ultra on the die.Relidded and did some testing.Ran RealBench for 1.5 hrs and the cores were 64 65 67 69 cel with a 5.0 oc at 1.375 volts.Before the delid it was in the high 80's low 90's.One weird thing though.Idle temps are fine 29-30 but sometimes spike up to 50 cel for a split second then back to 30.HWMonitor shows all 4 cores do this about once or sometimes twice spike during idle with that 20 cel jump for 1 or so seconds.But when stressing there is no spiking and all the cores are pretty much within a few degrees of each other.Core 0 and core 3 there is a 6 cel spread though.Anyone know or have any ideas on what might be causing the idle 20 cel spikes for the split second.It only happens like twice per minute when I was watching HWM and Not at All when Stressing.I have never seen this before..
06-03-2019 10:16 AM
Shawnb99 I'll see what temp I get when I reapply my paste, finally the back-plate for my WB is in stock so I'll wait for that first before I decide if I'll redo the delid myself.
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