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R6E: Any clue on what is the expected i9-7940X overclock?

Inkar
Level 7
Hi,

Does anyone have a clue about what is the all core expected i9-7940X (non-avx) overclock range with the Rampage VI Extreme and an AIO?.
I know nothing is guaranteed other than the factory specs. I just can't find any reviews with this kind of data for the 7940X.


Thanks.
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83 REPLIES 83

CSN7
Level 9
From your pics it looks like you didn't remove the old silicon glue from the pcb. You should at least clean the glue from the small pcb part for optimal contact 🙂
That's how I did it with a bit of lapping .

71425714267142771428

CSN7 wrote:
From your pics it looks like you didn't remove the old silicon glue from the pcb. You should at least clean the glue from the small pcb part for optimal contact 🙂
That's how I did it with a bit of lapping .

71425714267142771428

Yeah,I was afraid that I would damage those small pcb caps/elements...:o so I left that silicone untouched.Nevertheless,will try again but I doubt I will see any changes. 🙂

CSN7 wrote:
From your pics it looks like you didn't remove the old silicon glue from the pcb. You should at least clean the glue from the small pcb part for optimal contact 🙂
That's how I did it with a bit of lapping .

71425714267142771428


QUESTION: Where did you get that Cu cover? I've looked but am only seeing them for some of the other SKUs.

And did you really lap your Si? Haven't heard of that before. Sounds risky.

Also, Tom's Hardware just did an OC of a 7800x and have some great OC info re BIOS settings to achieve stable OC. They discuss the potential of the non-lidded CPU, where they just place the heatsink directly on the chip - for super overclocks, it helped quite a bit.

Thanks.

CSN7
Level 9
Well could not change anything, but that one core seems to have poor contact. Maybe some more liquid metal would already do the trick.

Yes it's a bit fiddly around the small transistors/SMDs. Just don't use tools, use you fingernails and take your time and scratch off the big junk. After that take some soft paper with isopropanol for example and give it a couple of wipes and the rest of the glue will come off eventually.

CSN7 wrote:
Well could not change anything, but that one core seems to have poor contact. Maybe some more liquid metal would already do the trick.

Yes it's a bit fiddly around the small transistors/SMDs. Just don't use tools, use you fingernails and take your time and scratch off the big junk. After that take some soft paper with isopropanol for example and give it a couple of wipes and the rest of the glue will come off eventually.

Done it,last night!I scratched off all of the silicone(fingernails 😄 ) and put some only on the edges,like a smear.And yes,die was making good contact only in the middle when I removed the IHS.SO I wiped all liquid metal,cleaned IHS,PBC,reapplied LM seal it and this morning on stock freq there were non big core temp differences.Later,when all the bubbles from the loop gets out,will try OC... 😮 thanks for the advice :cool:
----EDITED----
Bubbles where gone much faster than expected,but this piece of silicone is still a dud or a lemon 😄 Still nothing besides stock freq works 😞 (which is great for work compared to my previous build but but it would be nice if it could at least be on pair with any threadripper model on stock freq...)
There is no thermal throttling ,temps are much more equalized across all cores,but won't budge beyond stock 😕

Damn that is unfortunate....lack of the draw I guess..

BTW what waterblock are you using?
Asus Rampage VI Extreme | i9-7940X | 64GB Trident Z RGB 3600 | Asus Strix 1080Ti OC | Samsung 960 Pro 512GB | WD Gold 10TB | WD Red 4TB X 2 | PSU Corsair AX1500i | Custom Water Loop - RAD MO-RA3 420 Pro | EK Monoblock | Phanteks GPU Block | Heatkiller 200 Tube RES | EK Dual D5 Revo Pumps | 9 X Corsair ML 140 Pro Fans on RAD | | Bitspower Fittings Black Chrome | Cooler Master Cosmos 2 Modded Case | Silent WIngs 3 120mm Intake |

Abaidor wrote:
Damn that is unfortunate....lack of the draw I guess..

BTW what waterblock are you using?

EK Supermacy EVO and I have monoblock for RVIE that I probably won't use,cuz VRM never pass 50-60C on stock settings...(very good heatsink on this mobo)

CSN7
Level 9
Oh man I really thought it would help. I guess that's just how the cookie crumbles. Getting a 7960X in soon, hoping for a good one, fingers crossed.

CSN7 wrote:
Oh man I really thought it would help. I guess that's just how the cookie crumbles. Getting a 7960X in soon, hoping for a good one, fingers crossed.

That's great CPU,even on stock settings damn 16cores are almost on pair with Threadripper 16core....But,hope you have more luck with OCing it,nevertheless I think it will be awesome workstation . 🙂 Hey,your advice really did help,I managed to bring that one core temps way down.So I guess,it will have at least prolonged life.:cool:

CSN7
Level 9
Well you mean Threadripper is almost on pair with Intels 16 ... I wouldn't even say almost, Intel still smokes AMD honestly.

Well we'll see what is possible with my cooling on 16 Cores. Got the 7920X to 5.0-5.3 Ghz depending on the benchmark ofc.

Glad I could help! But you did the work, so props to you Sir!