Intel to launch 6 core Coffee Lake-S CPUs & Z370 chipset 5 October 2017

Matt26LFC · 8 Oct 2017 at 18:17

^^ Primaries go any tighter? 1T possible at all?

RichUK · 8 Oct 2017 at 18:29

1T is not possible.

C14:

jigger · 8 Oct 2017 at 18:32

RichUK said:
1T is not possible.

C14:

I'd probably lower the timings and try for north of 4000Mhz, then work on the cache.

RichUK · 8 Oct 2017 at 18:33

I wasn't able to post past 4k.

gavinh87 · 8 Oct 2017 at 18:55

RichUK said:
1T is not possible.

C14:

What is this witchcraft?
I cant boot at 4000mhz CL19

Matt26LFC · 8 Oct 2017 at 18:57

Any chance of tRAS and tRFC going tighter? Might need a vdimm voltage bump couple of your scores are lower with 14-14-14

chroniclard · 8 Oct 2017 at 19:03

Pretty good dual channel speeds/latency.

Dr_Watson · 8 Oct 2017 at 19:10

8350k after delid, 10 deg cooler, but 1.3v for 4.7 and can still hit 90 Deg on one of the cores with Prime. Games and Cinebench are much cooler, reading about this Hyper 212, it's not up for the job, got a H115i in the corner for my build next month, time to steal it for this build. These things always start out cheap.....

gavinh87 · 8 Oct 2017 at 19:12

Quick and dirty 4000mhz, not tried higher

RichUK · 8 Oct 2017 at 19:17

gavinh87 said:
What is this witchcraft?
I cant boot at 4000mhz CL19

Never mind, just seen you've hit 4k on mems.

~~~~~~~~~~~~~~

Try loading BIOS defaults and then:

Input 1.15 for VCCIO / System Agent and 1.4v for memory.
Set mem frequency to 3866
Manually input your DRAM timings for 4266 (so in my case - 19-19-19-39-2T)
leave tweak mode on auto - F10 and save changes.
Boot to windows and restart
Enter BIOS and change to 4000Mhz - F10 save changes and load into windows

jigger · 8 Oct 2017 at 19:19

You ready for a bench run now?

gavinh87 · 8 Oct 2017 at 19:25

For me it was VCCIO and SA needed 1.25v to get that. Going to try get timings lower and then try for 4266, though I doubt its going to be easy.

RichUK · 8 Oct 2017 at 19:37

Matt26LFC said:
Any chance of tRAS and tRFC going tighter? Might need a vdimm voltage bump couple of your scores are lower with 14-14-14

RichUK · 8 Oct 2017 at 19:40

gavinh87 said:
For me it was VCCIO and SA needed 1.25v to get that. Going to try get timings lower and then try for 4266, though I doubt its going to be easy.

Interesting. I only needed 1.176 for SA and 1.184 for IO, according HWinfo - I had set 1.15 in BIOS for both, however.

gavinh87 · 8 Oct 2017 at 19:40

Think I've found my IMC limit. 4000mhz CL20.
Any lower timings wont boot and any more on the frequency wont boot either.
I suppose updates can help but I'm happy with this

gavinh87 · 8 Oct 2017 at 19:42

RichUK said:
Interesting. I only needed 1.176 for SA and 1.184 for IO, according HWinfo - I had set 1.15 in BIOS for both, however.

You have a unicorn

Tbh, even at 1.25v its still lower than the stock voltage and 4.7ghz on all cores is more than tameable on a h100i without a delid.
I suppose 4.9ghz is achievable but in the quick benches I ran at 5ghz, the difference was minimal.

RichUK · 8 Oct 2017 at 19:44

For C14, I was running the memory at 1.6v though

Matt26LFC · 8 Oct 2017 at 19:48

RichUK said:

Much better! More cache? Still no delid?

gavinh87 · 8 Oct 2017 at 19:52

RichUK said:
For C14, I was running the memory at 1.6v though

Ahh! Is it stable?
Not sure how these would fare at 1.6v....

Marak · 8 Oct 2017 at 22:14

Dr_Watson said:
8350k after delid, 10 deg cooler, but 1.3v for 4.7 and can still hit 90 Deg on one of the cores with Prime. Games and Cinebench are much cooler, reading about this Hyper 212, it's not up for the job, got a H115i in the corner for my build next month, time to steal it for this build. These things always start out cheap.....

Did you use liquid metal? I did mine today and have about 25C lower temps on my 8350k. Corsair H80iv2 AIO.