meoxley
So I'm running my 8086k on Maximus X Code. I can be stable at 5.124ghz with AIO and 5.3ghz with fish tank chiller.

I just bought an i9-9900ks, planning to delid and try to push to 5.5ghz...but am I just wasting time/energy/money on the wrong platform?

Are people seeing bigger gains on the 10 series chips to warrant upgrading new board, ram etc? If I could get my hands on an i9-9990xe I'd hop on that in a heart beat but is there anything new in the 10900k that warrants the boost or should I just stick with my plan to delid and clock the 9900ks. Or do nothing, sell the 9900ks and keep the 8086k until the next gen comes?

I just upgraded my 8086k to a 9900kf in the Maximus X Hero wifi. OC'd both to 5GHz all core.  Not sure the differnce in VRM, but I can tell you that I needed to up the LLC from lvl 4 on the 8086k to lvl 6 for the 9900kf. It seems to be standard based on browsing other forums. From what i see of reviews of the 10th gen hardware, the gains don't seem to justify the platform upgrade costs, in my opinion. Unless you can make back 80-90% of the cost, and even then, I think the hassle isnt worth it when you already have a drop in upgrade.

vanity_lost
There are no great benefits of upgrading from 8086k to either 9900k or 10900k.

The gains aren't huge, having gone from a delidded+liquid metal 8086k to out of the 9900kf, idk if I'd do it again. My system runs louder given the worse thermals so another thing to consider

coolmistry

meoxley
So I'm running my 8086k on Maximus X Code. I can be stable at 5.124ghz with AIO and 5.3ghz with fish tank chiller.

I just bought an i9-9900ks, planning to delid and try to push to 5.5ghz...but am I just wasting time/energy/money on the wrong platform?

Are people seeing bigger gains on the 10 series chips to warrant upgrading new board, ram etc? If I could get my hands on an i9-9990xe I'd hop on that in a heart beat but is there anything new in the 10900k that warrants the boost or should I just stick with my plan to delid and clock the 9900ks. Or do nothing, sell the 9900ks and keep the 8086k until the next gen comes?

 
I have decide to keep i7 8086k and the 9900k is not very much gain from i7 8086k.. have a look compare 8086k to 9900k
it only 4% gain from 8086k is no point get 9900k waste money! 
8086k is strong solid!!! 
I run at 5212 ghz stables for year!!! Full load temp reach 74c at 100% usage it much cooler than 9900k!!
 
IF i9 9900KS oh yeah it very good but no point this getting hot than 9900k and expensive...
 
So keep 8086k...

So
Couple things
I did go from an 8086k to a 9900kf (the f suffix indicates intel disabled the integrated graphics, either due to lacking performance or realizing no one uses igpu on these higher end processors so the small price cut could help move more silicon)
My 8086k was delidded, and I delidded it.
The gains in stability were nice on the delid, given lower temps meant tighter voltage.
From my understanding, the process of delidding soldered cpus consistently requires either a heat gun or a very gradual increase on the delidder pressure.
I've seen people report its almost the same as non soldered intel chips (which I've done a few of)
But im not risking damaging the silicon for the lower temp fluctuations.
What I found in my Asus Maximus X Hero wifi was a need to increase the LLC.
My 8086k felt like a subpar bin, getting 5GHz all core, no AVX offset at 1.36v LLC4, 4.7GHz cache, delidded, under a 280mm AIO. Never over 70c.
hwinfo64 reported 1.344v-1.360v vcore under full (avx) load.
I seem to have been on the better end of what I've browsed forums on 9900k/kf OCs
Getting 5GHz all core, no AVX offset at 1.35v LLC6, 4.7GHz cache, under the same 280mm AIO. Never over 78c.
hwinfo reports 1.328v-1.344v vcore under full (avx) load
But I've seen some people report being unable to hit 5GHz with 360+240 custom loops with some 9900k/kf
Idk if it was inexperience, bad settings, bad mobo, or bad luck with the silicon lottery.
I've seen 9900ks owners seen to have an easier go
But when I was looking the 9900k was 400, 9900kf was 380, and the 9900ks was 1100.
I wouldn't even consider the upgrade for 1100.
You could build a solid ryzen 5900x or intel 10900k rig off 1100.
But for 380-400, or a end of year sale if they have any
I think it's your call
If you know you play games that benefit from increased thread counts, maybe
But I'll tell you a delidded, decent OC on an 8086k does get you 90-95% of the performance you can get with an similarly OC'd 9900k/kf.
And unless you luck out with your silicon, you might see better performance with a delidded 8086k, given smaller temp fluctuations meaning more frametime consistency meaning smoother gaming overall.
It helped that I was able to make back most of the 380 by selling my 8086k, for me.

Ultimately, ram upgrades, storage upgrades, gpu upgrades, monitor upgrades would probably be money better spent unless you know you can utilize those extra cores.

I had an i9 9900KS, played around with the idea of selling it on eBay for $175 more than I paid for it and when I took the plunge, it sold in less than 2 hours. It covered the cost of a i9 10900K. I was so happy to get back to a processor that covered the standard 3 year warranty rather than the i9 9900KS's 1 year warranty cause it's a special edition. The i9 9900KS is the absolute best processor for that platform, it has the strongest memory controller and highest power allowance, with the i7 8086K in 2nd place, those were the only two processors I had that could support an overclock and 4GHz+ memory for me, the i9 9900K's I tried out wouldn't even boot with my kits. But the upgrade to the i9 10900K was noticeable, I'd say about a 10-15% jump in performance in the games I play, with overclocking even more...
 
If you are sticking with Intel, I would suggest moving to the Z490 platform, something like the MSI Z490 Unify or Asus Z490 Apex. The best deal on Intel's side is the i9 10850K right now. The i7 10700K is also a good deal and is essentially the i9 9900KS but with thermal velocity boost. Thermal velocity boost is one the main difference between high-end 1151 and 1200 socket processors, it pretty much makes it so you don't have to overclock. But you will notice some things, like core temp heats up way faster, it's common for it to bounce around from low 30C to 100C+ when in games.
 
If you were really wanting to tinker with deliding and all of that, this might be of interest:
https://www.coolermaster.com/catalog/coolers/cpu-liquid-coolers/masterliquid-ml360-sub-zero
 
It only works with Z490 boards though.