Tuesday, July 3rd 2018

Core i7-8700K Overclocked to 7.34 GHz (3c/3t) on Z270 Chipset, Bags SuperPi Record

German professional overclocker Dancop got the Intel Core i7-8700K processor to work on an ASUS ROG Maximus IX Apex (Z270) motherboard, something that's not supposed to work. CPU-Z screenshots seem to confirm this unholy union between the 6-core "Coffee Lake" processor and a 200-series chipset motherboard, using a custom "0084" BIOS dated 11th June, 2018. Dancop then proceeded to overclock the chip to 7344 MHz using extreme cooling, and 2x 8 GB (dual-channel) DDR4-4000 memory. This bench-stable build was then used to bag a SuperPi 32M world-record.

There's a rather big catch, though. Half the cores on the i7-8700K were disabled, and so was HyperThreading (not that it's relevant to SuperPi). The 3-core/3-thread chip was still bench-stable at 7344 MHz, crunching SuperPi 32M in a world-record 7.609 seconds. The clock speed was achieved by dialing up the multiplier to 73.0x, with the base-clock probably untouched, at 100.61 MHz (with the +0.61 MHz probably being variance). Supporting this clock was a blistering core voltage of 1.984 V. A liquid-nitrogen evaporator was used to tame the CPU and motherboard VRM. Find the validation in the source link below.
Source: Dancop (HWBot)
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75 Comments on Core i7-8700K Overclocked to 7.34 GHz (3c/3t) on Z270 Chipset, Bags SuperPi Record

#51
diatribe
Dancop..Thermal Grizzly Kryonaut used on die and IHs..
How does it compare to Coollaboratory Liquid Ultra? Does it make a difference for sub-ambient cooling?
Posted on Reply
#52
R0H1T
There's a few other tweaks that work quite well, for me, in case of benchmarks. Though I'm not sure if hwbot will allow them. Also great to see the record holder come here & share his experience!
Posted on Reply
#53
Franzen4Real
bugNo, it's a proper record.
You don't complain about turning and/or handling in a record-setting dragster, do you?
That all depends. Does said dragster have either an Intel or nVidia sponsorship? If yes, then I would venture to say yes.....some people will complain.
Posted on Reply
#54
Ruru
S.T.A.R.S.
eidairaman1Records should only be counted with current software used.
So benchmarkers should only use 3DMark Fire Strike and Time Spy?

People on this news thread doesn't seem to get the idea of extreme overclocking.
Posted on Reply
#55
DR4G00N
Chloe PricePeople on this news thread doesn't seem to get the idea of extreme overclocking.
Yeah, that's pretty much how it is at any general tech forum whenever something like this get's posted. Nothing new.
Posted on Reply
#56
Dancop
DR4G00NHow does it compare to Coollaboratory Liquid Ultra? Does it make a difference for sub-ambient cooling?
LM is good up to - 70...then it turns really bad!!!
DR4G00NYeah, that's pretty much how it is at any general tech forum whenever something like this get's posted. Nothing new.
I'm used to it :D
cadavecaThanks! Would be great to see a video of getting everything ready... maybe a series of videos... getting OS prepped. Getting board and CPU and mems and VGA prepped. BIOS set-up. Mods. Then the benchmarks... a full capture of every step... every single one... would be great to see. Even when things go wrong... we like drama! Think back to Macci's videos back in x850 days and beyond... but with more info. XOC is missing this sort of personality that isn't so tied into competition... it would be great.
That will be done soon buddy! Just follow me on Facebook and or YouTube!
mber: 158752"]Yeah, that's pretty much how it is at any general tech forum whenever something like this get's posted. Nothing new.[/QUOTE]
I'm used to it :D
Posted on Reply
#57
MrGenius
SuperPi is definitely the benchmark that takes the most knowledge and skill to produce world class results. Wondering why he only ran 3C/3T? Why even run that many? All you need is 1C/1T. Why XP? Because anybody who knows anything knows that's what you use for SPi(and stripped down to the bare minimum...with the olive green theme...;)). Along with copy waza and all the rest of the "secret sauce".

@Dancop nice job man. RESPECT!
Posted on Reply
#58
Dancop
1/1 is possible, but yeah, the os and all other processes run there! Core 1 (means second core) is usually enough then, but my third core (core2) runs much higher than core1
Posted on Reply
#59
Aquinus
Resident Wat-man
Meh. I don't really care much for cooling with consumable materials. I don't really understand why it's as much of a thing as it is. I would be more interested what CPUs are capable of doing under phase change which is a much more viable option for a longer duration overclock and testing session. It's still a bit on the extreme side but, at least it's a bit more practical. What good is a computer if you can't do anything practical with it?
Posted on Reply
#60
Bones
AquinusMeh. I don't really care much for cooling with consumable materials. I don't really understand why it's as much of a thing as it is. I would be more interested what CPUs are capable of doing under phase change which is a much more viable option for a longer duration overclock and testing session. It's still a bit on the extreme side but, at least it's a bit more practical. What good is a computer if you can't do anything practical with it?
Depends on what you bought it for and that's up to the owner.
Dancop doesn't have to worry about the cost - He's one of the sponsored guys.

As for why it's the thing it is, well, why is any sport what it is?
Competition - As it's always been before with sports in general.
Posted on Reply
#61
Dancop
Amen... But to get there I had to invest before, and that was not just a bit
Posted on Reply
#62
Bones
I get that - You had to earn the privilege of being sponsored like everyone else.
I know that it wasn't a case of someone just came up to you and started letting you get stuff, that had to be something you showed yourself worthy of and you did just that with results.

Everyone started on the same level with the same expenses getting there, it's just that very few get as far as you have - You earned it and nothing wrong with that.
Posted on Reply
#63
Berfs1
Liviu Cojocaru...but why?! I get it... the record but then again this is kind of pointless, that's my opinion :)
It is for the fact that it CAN go a bit faster. Me included, overclockers always want the ultimate maximum performance they can push out of their setups!
Posted on Reply
#64
Liviu Cojocaru
Berfs1It is for the fact that it CAN go a bit faster. Me included, overclockers always want the ultimate maximum performance they can push out of their setups!
really...I did not think about that (ironic)...I am talking about this specific type of OC (with LN2) that you don't use in a real world scenario
Posted on Reply
#65
bug
Liviu Cojocarureally...I did not think about that (ironic)...I am talking about this specific type of OC (with LN2) that you don't use in a real world scenario
Are you asking why he did not attempt to set a record after hamstringing himself?
Posted on Reply
#66
Prima.Vera
Liviu Cojocarureally...I did not think about that (ironic)...I am talking about this specific type of OC (with LN2) that you don't use in a real world scenario
You're not using Dragsters on the normal streets also to go for groceries shopping, aren't you? ;)
It's THE NEED FOR SPEED my friend! And it's always going to be without any boring purpose. ;)
Posted on Reply
#67
Liviu Cojocaru
Prima.VeraYou're not using Dragsters on the normal streets also to go for groceries shopping, aren't you? ;)
It's THE NEED FOR SPEED my friend! And it's always going to be without any boring purpose. ;)
I feel the same about dragsters my friend ;) but I see the point ... testing the limits helps you to evolve but then again this "record breaking" still useless to me :)
Posted on Reply
#68
bug
Liviu CojocaruI feel the same about dragsters my friend ;) but I see the point ... testing the limits helps you to evolve but then again this "record breaking" still useless to me :)
Yeah, there's always the odd record out there that is not about you ;)
Posted on Reply
#69
Liviu Cojocaru
bugYeah, there's always the odd record out there that is not about you ;)
Probably not just me...but yeah
Posted on Reply
#70
Berfs1
Liviu Cojocarureally...I did not think about that (ironic)...I am talking about this specific type of OC (with LN2) that you don't use in a real world scenario
It is not that we will be running CPUs at LN2 temps and 7 GHz all the time, however it shows just how far the architecture has evolved. The higher frequencies prove that the manufacturing process has improved, and allows for better IPC at the same time.
Posted on Reply
#71
Liviu Cojocaru
Berfs1It is not that we will be running CPUs at LN2 temps and 7 GHz all the time, however it shows just how far the architecture has evolved. The higher frequencies prove that the manufacturing process has improved, and allows for better IPC at the same time.
The architecture changes quite fast, this record does not prove anything ... to me at least ;)
Posted on Reply
#72
Berfs1
Liviu CojocaruThe architecture changes quite fast, this record does not prove anything ... to me at least ;)
When compared to other LN2 submissions, it means a lot.
Posted on Reply
#73
Liviu Cojocaru
Berfs1When compared to other LN2 submissions, it means a lot.
Like what?
Posted on Reply
#74
Berfs1
Liviu CojocaruLike what?
For science? I mean correct me if I'm wrong, but Intel uses this data to formulate what they can do in future products. Otherwise, without overclockers, y'all wouldn't have any chips specced over 4.7 GHz. Intel wouldn't have been able to identify that 5 GHz was very possible without the help of overclockers. That's why LN2 submissions matter, because for quantum computing, this information will be VERY important.
Posted on Reply
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