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Hardware.Info overclocked Core i7 7700K to 6.5 GHz with LN2 [All cores active]

Joined
Jan 5, 2006
Messages
18,584 (2.63/day)
System Name AlderLake
Processor Intel i7 12700K P-Cores @ 5Ghz
Motherboard Gigabyte Z690 Aorus Master
Cooling Noctua NH-U12A 2 fans + Thermal Grizzly Kryonaut Extreme + 5 case fans
Memory 32GB DDR5 Corsair Dominator Platinum RGB 6000MT/s CL36
Video Card(s) MSI RTX 2070 Super Gaming X Trio
Storage Samsung 980 Pro 1TB + 970 Evo 500GB + 850 Pro 512GB + 860 Evo 1TB x2
Display(s) 23.8" Dell S2417DG 165Hz G-Sync 1440p
Case Be quiet! Silent Base 600 - Window
Audio Device(s) Panasonic SA-PMX94 / Realtek onboard + B&O speaker system / Harman Kardon Go + Play / Logitech G533
Power Supply Seasonic Focus Plus Gold 750W
Mouse Logitech MX Anywhere 2 Laser wireless
Keyboard RAPOO E9270P Black 5GHz wireless
Software Windows 11
Benchmark Scores Cinebench R23 (Single Core) 1936 @ stock Cinebench R23 (Multi Core) 23006 @ stock
*Note: Translated with google translate.
Original: https://nl.hardware.info/nieuws/50855/hardwareinfo-overklokt-core-i7-7700k-naar-65-ghz-met-ln2

"During a LN2 overclocking session with the new Intel Core i7 7700K processor Hardware.info has managed to achieve a clock frequency of 6.5 GHz active with all cores. Overclocker Joost 'Rsnubje' Leonard '5erveD', often found in our overclocking forum, last weekend went to work with the new Kaby Lake processor, which overclock higher compared to pale Skylake."

msi-z270-xpower-gaming-titanium.jpg


"In addition to the new Intel processor was the set up of an MSI XPower Gaming Titanium Z270 , which in our review already an Excellent Choice Award won for its excellent overclocking capabilities.On the processor Der8auer Beast-pot was the liquid nitrogen cooling posted. In addition, the overclockers used a G.Skill Trident Z 16GB DDR4-3866 CL18 kit as a memory and a Seasonic X-Series 1050W power supply.

To begin with, the CPU was, delidded and with Thermal Grizzly Kryonaut between the die and the IHS, clocked at 4.5 GHz at a voltage of 1.25 volts. And the processor Rsnubje 5erveD cooled down to -85 degrees Celsius to warm him, then with a heatgun to about -40 ° C. The goal is to have the LN2-pot 'glass', wherein the inner side is covered with a thin layer of ice. The coldbootbug was found to be -135 ° C. After disabling all C-states and other power saving options could begin the real overclocking.
"

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"Cinebench 15 was turned stable at 5.8 GHz with a cache speed of 5 GHz, which was 1.6 volts required. Subsequently, the speed was gradually increased to 6.4 GHz, at a voltage of 1.8 volts. Eventually it was taking a cache clock of 5.8 GHz possible, which still resulted in a significantly higher Cinebench score of 1404 points. In comparison to the standard rate has an i7 7700K 960 points in this benchmark. Some other benchmarks could even be completed at 6.5 GHz. meanwhile the temperature of the CPU had dropped to about -160 ° C.

Which -160 degrees was the coldbug-temperature, but with a fluke which could still some downward: the CPU PLL-voltage was maximized in the BIOS set at 1.5 volts, but by simply pressing appeared to remain on the plus specifically to increase up to 2 volts. Hereinafter the processor remained at about -170 degrees stable. Unfortunately turned out to be the thermal paste 'cracked', wherein the thermal paste is more improper contact with the heatspreader of the CPU. This is often done by a rapid temperature change. Only by heating the pot again to a positive temperature, the thermal paste liquefies and restores the contact. This of course takes time and as it happened for the second time, decided overclockers for now to be satisfied with the scores.
"

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"A next time there can be further experimented with voltages in order to be able to achieve even higher clock speeds. Therefore we propose to establish a customized BIOS with higher voltages are needed. Also pay attention to the memory on the wishlist, as a combination of low latencies and high clock speed gives the best performance.

At varying clock speeds for optimum stability alongside Cinebench 15 were also Cinebench 11.5 HWBOT Prime and SuperPi rotated. You can see all scores and screenshots below.
"

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http://hwbot.org/submission/3432444_

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http://hwbot.org/submission/3432441_

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http://hwbot.org/submission/3432889_

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http://hwbot.org/submission/3432881_

002466.jpg


https://nl.hardware.info/nieuws/50855/hardwareinfo-overklokt-core-i7-7700k-naar-65-ghz-met-ln2
 
So, the 7000-series is not that bad after all. Just 3 weeks ago i3-7350 took the first and the second place amongst dual-core GPUPI for CPU records @ over 6.7GHz.
Same goes to 7700K: new record at 6940MHz! And validation-stable 7.3GHz with 4 cores and HT enabled.
http://valid.x86.fr/dusa2q

Maybe it's time to get back into overclocking, with all that and unlocked Zen on the way ))
 
Yup, I've added [All cores] in the title.:)
ok now ... add a [Boring LN2] tag instead of LN2 :p ... nah ... just [All core, HT enabled] rather :D


:laugh:
 
7.3GHz on a single core is a lot less impressive than 6.4GHz with full 4 cores/8 threads, IMO.
To me none of these are impressive as we can't have that at home, nor they can keep it 24/7. Granted, it's a lot of fun for themselves but vast majority of users are interested in stable clocks with more affordable cooling solutions.
I get more excited when i see someone running a i7 7700k @5.2GHz with EKWB Predator 24/7 :)
 
You can have them at home.. get some LN2. Its not made for 24/7, just as a dragster isn't made for the street. You take it out to race. Most can appreciate the effort, knowledge, and skill to reach those clocks, however.

I have 5.2 GHz with custom loop... does that count? :)
 
It never has been a bad CPU.
in short ... no, otherwise it's just a refreshed 6700K with a higher price tag , probably a move from Intel to sell more 6700K by replacing the 6 with a 7, joking... there is some more substantial improvement in them than just a number switch (well, not in the ipc department ... :laugh: )

technically no one called the 7XXX series bad ... some of us just called it, with reason, pointless.

You can have them at home.. get some LN2. Its not made for 24/7, just as a dragster isn't made for the street. You take it out to race. Most can appreciate the effort, knowledge, and skill to reach those clocks, however.
mmhhh???? not dimnishing the merit of LN2 oc'er ... but it's still boring and a huge "meh?", what he meant was for 24/7 all core enabled and HT (for those who use/need it ) and not needing LN2 or any other expensive temporary cooling

oh well a Phase change cooling is still an option ... i like to fill tank but ... more beer one than LN2 :p (well Air/water OC is more fun than LN2... imho)

1.45V or so. I haven't really tried to push it down. I know at 5Ghz I can do 1.325V stable(for long benching sessions). I would hope 1.4V is good for 5.2GHz.
holy ... oh a 6700K well that make the point of the 7700K even more pointless ... (specially if reaching those frequencies is less tricky and easier with the 7XXX series ... no fun ... )
 
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It actually costs less, MSRP wise. Can't blame inflated prices. But the MSRP was $305 on the 7700K, $350 for the 6700K. And you couldn't find a 6700K in stock nor even close to $350. I can walk into microcenter now and snag one for $330.

It may be boring to you, but its sure a lot more that goes into it, than setting your multiplier and playing with vcore for ambient overclocks. Soooooooooo much more to worry about.

I have a 7700K (2). I have not updated the specs (will do so now).
 
It actually costs less, MSRP wise. Can't blame inflated prices.

I have a 7700K (2). I have not updated the specs (will do so now)
oh ... then, ok too bad

mrrrhmmmm the 6700K is already overpriced where i live and the 7700K has a similar launch price ... :p (MSRP is no reference in the end ... we never see those prices ;) )
for what it brings over the 6700K or 6600K for the 7600K, aka: easy mode OC, it's a disappointment.

edit: btw i meant higher price tag at the current day ;) so ... yep... basically
 
So, you wouldn't get a 7700K for $10 more?

That is how much the price difference is in the USA at newegg. ;)

EDIT: Now, would I UPGRADE? That depends on what my 6700K would do, honestly. But for most, its not an upgrade. :)
 
In my country.....:

i7 6700K € 360,50 (387 USD)
i7 7700K € 378,90 (422 USD)

No "Microcenter" here.........
 
So, you wouldn't get a 7700K for $10 more?

That is how much the price difference is in the USA at newegg. ;)
if i did need to upgrade my 6600K ... why not ... but that would be more a sidegrade as i don't need HT

although the price of a 7700K where i am (in stock) is closer to 400$ than 350$ 6700k are around 380$ instead of 340$ :p


edit: well i can wait on 6700K upgrader/sidegrader that would put their "old" cpu at a discounted price on second hand ... man i want a deal like the one i got some time ago .... a 4770K + 16gb DDR3 2400 TridentX for 320$ :laugh:
 
In my country.....:

i7 6700K € 360,50 (387 USD)
i7 7700K € 378,90 (422 USD)

No "Microcenter" here.........
if i did need to upgrade my 6600K ... why not ... but that would be more a sidegrade as i don't need HT

although the price of a 7700K where i am (in stock) is closer to 400$ than 350$ 6700k are around 380$ instead of 340$ :p


edit: well i can wait on 6700K upgrader/sidegrader that would put their "old" cpu at a discounted price on second hand ... man i want a deal like the one i got some time ago .... a 4770K + 16gb DDR3 2400 TridentX for 320$ :laugh:
Let's do math... In USA it is a $20 difference or 3% difference. In P4's land, it is a ~5% difference, while in Greiver's world, a $20 difference is also almost ~5%. :)
 
life is so much better when there isn't a cold bug.
 
Let's do math... In USA it is a $20 difference or 3% difference. In P4's land, it is a ~5% difference, while in Greiver's world, a $20 difference is also almost ~5%. :)
not caring about relative value when we were talking about MSRP :p

and even at "only" a 10$ or 20$ difference a 7700K is not worth over a 6700K (or even a 6600K for a higher difference if needing HT) just as i would not get a 7600K as i already own a 6600K

from a 6600K to a 7700K it's another story, thought the difference will not be 10-20$ this time :rolleyes: and HT is not really a feature i run after

10-20$ it's still more expensive (luckily ... the 6700K was literally 440$ at launch where i am ... blame the greedy retailer :laugh: )
 
It depends on the overclock to me. If I could spend $10-20 more for 5Ghz when I crap out around 4.6GHz... that is worth it to me.

life is so much better when there isn't a cold bug.
Doesn't the first post mention -135C for this sample?
 
I thought you guys knew this by now. A new top-end CPU that just got released is almost always more expensive initially.

Wait out and its price will stablize in few months.

Of course, if you don't have the patience, that's another matter.
 
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