40th Anniversary Intel - Core i7-8086K - 5.0GHz+

eddiew · 14 Jul 2018 at 15:08

Phil2008 said:
I am hoping when I get the board sorted, I will be able to turn off the turbo boost and oc cpu to something like 4.8ghz and it will underclock its self when idel or not doing much work..

But yeah, I have never liked overclocking memory as you dont really get much extra speed from it. My memory is not great I grant you at 2666mhz, but how much speed increase would I see with memory at 3200mhz or faster?

https://www.techpowerup.com/reviews..._Memory_Performance_Benchmark_Analysis/9.html

Maybe 2-3%, best case... On the whole, memory is the last point of call for performance on Intel systems. You're always better putting the budget into the GPU, or a premium motherboard to squeeze out a tad more overclock.

eddiew · 14 Jul 2018 at 15:12

kayomani said:
Spent a few evenings tweaking mine after deliding with conduconaught and kryonaught and i've currently settled on:
50x
1.3v core
Asock llc level 2
vccio 1.05v
vccsa 1.1v
45x cache
avx -3 (thinking of dropping this to -1)

Just touches 80c on my small NH-U9S under prime.

That's very nice

I'd be tempted to see if it'll do 5.1-5.2, even if only for curiosity

Any reason not to go LLC 1? I've found with mine that it actually goes up 20mv under stress test vs gaming, which is exactly when I would want it to go higher because my 8700k is game stable at lower volts than it needs to pass Prime.

Phil2008 · 14 Jul 2018 at 17:28

eddiew said:
https://www.techpowerup.com/reviews..._Memory_Performance_Benchmark_Analysis/9.html

Maybe 2-3%, best case... On the whole, memory is the last point of call for performance on Intel systems. You're always better putting the budget into the GPU, or a premium motherboard to squeeze out a tad more overclock.

I dont think the gigabyte Z370 HD3P is overly all that great for overclocking, but I needed a board with old a pci slot for my x-fi sound card and lots of usb sockets.. Anyway it cant be that rubbish at overclocking as it was £130.

Also Im going to be using the same cpu cooler as I have been using with my 2500k/2600k, the thermalright true black 120?

Phil2008 · 14 Jul 2018 at 21:40

So how does the core speed work then?..... If cpu is overclocked with turbo disabled all cores are the same speed. If turbo is enabled 1 core runs higher then the rest. But with the 8700k all cores run at the same speed regardless?

Edit: Ah, I see how they work, you can alter them independently in the bios

Smffy · 15 Jul 2018 at 08:55

Phil2008 said:
I dont think the gigabyte Z370 HD3P is overly all that great for overclocking, but I needed a board with old a pci slot for my x-fi sound card and lots of usb sockets.. Anyway it cant be that rubbish at overclocking as it was £130.

Also Im going to be using the same cpu cooler as I have been using with my 2500k/2600k, the thermalright true black 120?

People keep throwing that same link around and focusing on some testing FPS gains, and sorry but bothering to look at 720p is ridiculous. There are a number uses which rely more on memory in editing, to render the timeline or effects not just the final render of the video for example.

You don’t have to buy new memory but the point you have bought the latest CPU and overclocking it but have bought the lowest spec memory going - I would personally take the hit on a few extra quid.

eddiew · 15 Jul 2018 at 20:57

Phil2008 said:
So how does the core speed work then?..... If cpu is overclocked with turbo disabled all cores are the same speed. If turbo is enabled 1 core runs higher then the rest. But with the 8700k all cores run at the same speed regardless?

Edit: Ah, I see how they work, you can alter them independently in the bios

Fiddling basically just disables the single-core turbo and leaves all turbos being all-cores. Which is fine when you've got them over the original single-core anyway

They'll still idle down to lower clocks.

BTVA · 16 Jul 2018 at 16:05

joining the club with Apex IX Z270

eddiew · 16 Jul 2018 at 16:40

BTVA said:
joining the club with Apex IX Z270

Is that it's actual load vcore?

BTVA · 16 Jul 2018 at 18:41

eddiew said:
Is that it's actual load vcore?

load during cinebench is 1.200v

eddiew · 16 Jul 2018 at 19:57

BTVA said:
load during cinebench is 1.200v

That's a very nice voltage to work with... maybe try for 5.2 and see what happens?

Smffy · 17 Jul 2018 at 16:18

BTVA said:
joining the club with Apex IX Z270

Showing an 8700k in your Cinebench above your 8086... you own a good 8700k and your 8086 is worse?

Not having a go just curious, might cinebench some later on my 8700k/Apex- been a while!

BTVA · 17 Jul 2018 at 18:28

Smffy said:
Showing an 8700k in your Cinebench above your 8086... you own a good 8700k and your 8086 is worse?

Not having a go just curious, might cinebench some later on my 8700k/Apex- been a while!

nah the 8700K was clocked to 5.2Ghz + 4.9Ghz cache and 4000Mhz 16-17-17-28-1T, the 8086K was tested at 5Ghz, 4.5Ghz cache and 3600Mhz 15-15-15-35-1T.

Smffy · 17 Jul 2018 at 18:30

BTVA said:
nah the 8700K was clocked to 5.2Ghz + 4.9Ghz cache and 4000Mhz 16-17-17-28-1T, the 8086K was tested at 5Ghz, 4.5Ghz cache and 3600Mhz 15-15-15-35-1T.

But you bought the 8086 anyway or addition setup?? Might do some 5.3/4,133 runs later

BTVA · 17 Jul 2018 at 18:45

Smffy said:
But you bought the 8086 anyway or addition setup?? Might do some 5.3/4,133 runs later

impulsed purchase when travelling abroad

the 8700K I sold a while back and ran with 7700K for a few months, then got this 8086K and using the same drive and motherboard.

Smffy · 17 Jul 2018 at 19:33

BTVA said:
impulsed purchase when travelling abroad the 8700K I sold a while back and ran with 7700K for a few months, then got this 8086K and using the same drive and motherboard.

Fair play, I will endeavour to smash your score later then (prob won’t v tired

)

Smffy · 17 Jul 2018 at 22:36

BTVA said:
nah the 8700K was clocked to 5.2Ghz + 4.9Ghz cache and 4000Mhz 16-17-17-28-1T, the 8086K was tested at 5Ghz, 4.5Ghz cache and 3600Mhz 15-15-15-35-1T.

Well couldn't be bothered tinkering too much but still scores reasonably well and very similar to your old 8700k in the end... The top score was @5.3 a while ago (1755), the highest tonight 1735 @5.2, cache 52, mems @4,133 so pretty similar to yours. Compare to my 24/7 settings of 5.1, cache 47, mems 4,133 and the score is around 1660 so clearly a comparable sample with you 8086 (its one of the first batch 8700k). Bit of fun anyway

The small gains in benching come from lots of tuning the DRAM timings, it scored pretty close to my 1800X @4.1 but didnt quite beat it with 2 less cores:

BTVA · 17 Jul 2018 at 23:05

nice I will delid mine and do some 5.2Ghz-5.4Ghz runs tomorrow and we can have a nice exchange of CB15 results

Smffy · 18 Jul 2018 at 00:14

BTVA said:
nice I will delid mine and do some 5.2Ghz-5.4Ghz runs tomorrow and we can have a nice exchange of CB15 results

Excellent, you should manage at least 5.2/5.3 stable I reckon - 5.4 for my delid required so many compromises it wasn't worth the hours of memory timing tuning. I'm on the Apex X so very similar setup

Phil2008 · 19 Jul 2018 at 16:17

Finally got my board back and it has been updated this time.... Now I dont know if I am doing it right but Im overclocking to 5ghz on all cores I think, 1.38v bios, showing 1.260 - 1.300v windows.. Im getting some real low temps, plus I am using my old thermalright true 120 cooler. Am I doing it wrong and is there any software that shows you the clock speeds on all cores? Ah yeah windows 10 doesn't say its at 5ghz either, its at 4ghz according to windows?

JGBR · 19 Jul 2018 at 19:36

is the CPU worth the money ultimately....