Hello guys,
First things first: my main curiosity is - are the temps OK and within expectations? Or can it be improved?
I took the jump and delidded my 8700K. It's quite a mediocre CPU compared to what I've seen on the web for people winning the silicon lottery. But my preoccupation is not that much with the OC itself, but with the temps and if I applied the stuff correctly. There are quite a few delid tests on the web, but few are actually properly documented, i.e. you don't know for sure what sort of exact test people use, if they disabled AVX, what settings did they use inside prime95, what exact voltage and which voltage method etc.
I'll start with the settings and components, and then will link 2 screenshots. I tried to use a common test for p95/Coffee Lake OCs, 1344K Inplace FFTs with AVX disabled at 1.35V manual voltage inside the BIOS, so it's easy to replicate.
Specs: 8700K delidded, Conductonaut on die and back of IHS, as thin a layer as I could. Clear nail varnish on the 4 contacts near the die. Light resealing with Reinzosil sealant for high temps (can't really recommend this, it kind of forms a very thin layer on the substrate that's very hard to clean, no scraping works, and isopropilic alcohol 99% or acetone won't dissolve it.). Kryonaut between IHS and cooler coldplate, small amount, tried to spread it as much as I could.
Ambient temp: 24C.
Cooling: Meshify C case, 4x140mm Noctua PWM fans (2 intake, 2 exhaust), 1x120mm exhaust at the back, Noctua D15S cooler with additional 120mm Noctua PWM fan on the front.
In the tests the fans run at around 60-75% (approx 1500rpm for the 120mm, 1000 rpm for the 140mm).
Motherboard is a ****ty 4 phase VRM MSI Gaming Plus. I haven't seen it throttle yet with up to 165W package power on the CPU. It's basically the same VRM as on the MSI Z370-A Pro "reviewed" by der8auer in this video, where he could OC to 5.1GHz without a fan on the VRM. The VRM temps for my use case are 80C-ish, peaking at 92C. I personally don't feel comfortable drawing more than 150W through the VRMs.
Because of the motherboard VRM and the insane rise in power drawn with AVX2 and Prime95, I can't really run SmallFFTs with AVX2 as a test. My CPU is not a great sample and it seems to require around 1.33V-1.34V for 4800MHz if I enable AVX2. 5GHz would likely require 1.4V to get "fully" stable.
Now, the tests. 1.35V in BIOS. 50x multi, no AVX offset, 44x Uncore.
Test 1: prime95, last version, AVX disabled, 1344K Inplace FFTs, 15 mins (seem to be enough for peak temps, in fact they seem to go down over the test).
Max core 75C, average core/package temp 71C, power draw peak at 144W.
Test 2: Realbench, last version (apparently this is an AVX test. It will also use the GPU, so this will contribute some to higher temps). 15 mins stresstest, 8GB RAM used.
Max core temp 77C, average core/package 73C, peak power draw 134W.
If you want me to try and replicate your own conditions, hopefully it's not too low of a voltage, my 8700K is unstable at below 1.32V@5GHz, so I can't really test that. Also I can't test with P95 AVX2 at higher than 4.8GHz or so because of the ****ty VRMs and me needing quite high voltage to reach AVX2 stability.
Sorry for the long post. Just trying to see if I did apply the Conductonaut properly basically. Already redid the delid once, but not much has changed, if anything.
Bonus pics (with liquid metal seen affecting the IHS after just 2 days, and the very thin silicon pellicle that remains after the Reinzosil sealant and I can't remove). Cleaning the IHS is pretty much impossible too. Acetone, isopropilic alcohol couldn't undo the reaction. LM seems quite reactive even with the nickel plated IHS.
First things first: my main curiosity is - are the temps OK and within expectations? Or can it be improved?
I took the jump and delidded my 8700K. It's quite a mediocre CPU compared to what I've seen on the web for people winning the silicon lottery. But my preoccupation is not that much with the OC itself, but with the temps and if I applied the stuff correctly. There are quite a few delid tests on the web, but few are actually properly documented, i.e. you don't know for sure what sort of exact test people use, if they disabled AVX, what settings did they use inside prime95, what exact voltage and which voltage method etc.
I'll start with the settings and components, and then will link 2 screenshots. I tried to use a common test for p95/Coffee Lake OCs, 1344K Inplace FFTs with AVX disabled at 1.35V manual voltage inside the BIOS, so it's easy to replicate.
Specs: 8700K delidded, Conductonaut on die and back of IHS, as thin a layer as I could. Clear nail varnish on the 4 contacts near the die. Light resealing with Reinzosil sealant for high temps (can't really recommend this, it kind of forms a very thin layer on the substrate that's very hard to clean, no scraping works, and isopropilic alcohol 99% or acetone won't dissolve it.). Kryonaut between IHS and cooler coldplate, small amount, tried to spread it as much as I could.
Ambient temp: 24C.
Cooling: Meshify C case, 4x140mm Noctua PWM fans (2 intake, 2 exhaust), 1x120mm exhaust at the back, Noctua D15S cooler with additional 120mm Noctua PWM fan on the front.
In the tests the fans run at around 60-75% (approx 1500rpm for the 120mm, 1000 rpm for the 140mm).
Motherboard is a ****ty 4 phase VRM MSI Gaming Plus. I haven't seen it throttle yet with up to 165W package power on the CPU. It's basically the same VRM as on the MSI Z370-A Pro "reviewed" by der8auer in this video, where he could OC to 5.1GHz without a fan on the VRM. The VRM temps for my use case are 80C-ish, peaking at 92C. I personally don't feel comfortable drawing more than 150W through the VRMs.
Because of the motherboard VRM and the insane rise in power drawn with AVX2 and Prime95, I can't really run SmallFFTs with AVX2 as a test. My CPU is not a great sample and it seems to require around 1.33V-1.34V for 4800MHz if I enable AVX2. 5GHz would likely require 1.4V to get "fully" stable.
Now, the tests. 1.35V in BIOS. 50x multi, no AVX offset, 44x Uncore.
Test 1: prime95, last version, AVX disabled, 1344K Inplace FFTs, 15 mins (seem to be enough for peak temps, in fact they seem to go down over the test).
Max core 75C, average core/package temp 71C, power draw peak at 144W.
Test 2: Realbench, last version (apparently this is an AVX test. It will also use the GPU, so this will contribute some to higher temps). 15 mins stresstest, 8GB RAM used.
Max core temp 77C, average core/package 73C, peak power draw 134W.
If you want me to try and replicate your own conditions, hopefully it's not too low of a voltage, my 8700K is unstable at below 1.32V@5GHz, so I can't really test that. Also I can't test with P95 AVX2 at higher than 4.8GHz or so because of the ****ty VRMs and me needing quite high voltage to reach AVX2 stability.
Sorry for the long post. Just trying to see if I did apply the Conductonaut properly basically. Already redid the delid once, but not much has changed, if anything.
Bonus pics (with liquid metal seen affecting the IHS after just 2 days, and the very thin silicon pellicle that remains after the Reinzosil sealant and I can't remove). Cleaning the IHS is pretty much impossible too. Acetone, isopropilic alcohol couldn't undo the reaction. LM seems quite reactive even with the nickel plated IHS.