Intel Core i9-12900K is already showing seriously impressive overclocking potential

Intel Core i9-12900K being overclocked with liquid nitrogen
(Image credit: Tom's Hardware / Intel)

Intel’s Core i9-12900K has only just been unveiled, and it’s already breaking world records on the performance front.

As Tom’s Hardware reports, the freshly revealed Alder Lake flagship processor managed to set three new records when pushed hard by Tom’s resident overclocking expert Allen ‘Splave’ Golibersuch – and that’s just for starters, no doubt.

Splave overclocked the Core i9-12900K to 6.8GHz on its performance cores (up from 5.2GHz), and 5.3GHz (up from 3.9GHz) on the efficiency cores (yes, they can be ramped up too), using liquid nitrogen to keep the CPU cool while running benchmarks on Geekbench (and also Intel’s Extreme Tuning Utility or XTU).

The 12900K set new world records on both Geekbench 4 and Geekbench 5 for single-core, with tallies of 11,669 and 2,740 respectively, and also for multi-core (in the 16-core category) with results of 93,232 and 26,649 respectively. As Tom’s points out, in Geekbench 5, those scores beat out the previous single-core leader – Intel’s predecessor flagship, the 11900K – by 19%, and the old multi-core top dog – AMD’s Ryzen 9 5950X – by an even more impressive 27%.

With XTU 2.0, Splave had to drop the overclock on the performance cores a notch to 6.7GHz to keep the CPU stable enough to run the full benchmark, where the 12900K scored 12,765, another new record as mentioned.

If you’re curious about the PC used for this batch of benchmarks, the Core i9-12900K was nestling in an ASRock Z690 Aqua OC Edition motherboard, and paired with Klevv’s DDR5-4800 system RAM (overclocked to 6200MHz), with an EVGA Supernova 1600W PSU providing the juice for all this.


Analysis: Alder Lake looks promising for overclocking enthusiasts

It’s no surprise to see world records being broken, as every time a new range of processors emerges, overclockers can’t wait to get their teeth into jacking them up to incredible clock speeds with exotic cooling, and the results are predictably impressive. That said, this happened very quickly indeed, with Splave running the chip through its initial overclocked paces while Intel’s livestreamed Alder Lake launch was still going on.

This is clearly a positive indication that Alder Lake’s performance will likely ensure that 12th-gen chips will appear on our list of the best processors, and it’s a first glimpse that the overclocking potential is also strong here for those enthusiasts who want to get even more out of their shiny new CPU.

Notably, Intel has already promised that there’ll be a good deal more overclocking headroom with Alder Lake (compared to Rocket Lake), as PC Gamer spotted, so maybe it’s time to start getting excited about what these new hybrid processors will be able to achieve even with more run-of-the-mill cooling methods.

TOPICS

Darren is a freelancer writing news and features for TechRadar (and occasionally T3) across a broad range of computing topics including CPUs, GPUs, various other hardware, VPNs, antivirus and more. He has written about tech for the best part of three decades, and writes books in his spare time (his debut novel - 'I Know What You Did Last Supper' - was published by Hachette UK in 2013).

Read more
An RTX 5090 graphics card resting against its retail box with a closeup of the RTX 5090 branding
Nvidia's RTX 5090 has already been pushed beyond its limit - ROG Astral model overclock reaches 3.45GHz and 35 Gbps VRAM
GMKtec K10 Mini PC
Ridiculously powerful Mini PC comes with an Intel Core i9 HK CPU, can house 96GB of RAM and a staggering 24TB SSD storage
One of the best processor picks against a golden TechRadar background
The best processor in 2025: top picks from AMD and Intel
Ryzen 9000 promotional material
AMD's most powerful processor ever actually runs better on Windows 10 than Windows 11
A mockup of the Intel Core Ultra 200HX die against a blue swoosh background
Intel announces new Core Ultra 200 series mobile CPUs at CES 2025, targeting enthusiasts and edge users
G.Skilll Trident Z5 DDR5 RAM sticks on a black background
G.Skill DDR5 RAM is overclocked to a blazing 12,054MT/s with no liquid nitrogen needed – just air cooling
Latest in CPU
AMD Ryzen AI
New leak suggests AMD's working on an Arm-based processor to rival Qualcomm's Snapdragon X series
AMD Ryzen 9950X3D chip next to its packaging on a pink table
Asus' AI Cache Boost promises to "pump up" your AMD Ryzen 9000 processor's AI performance
An AMD Ryzen processor slotted into a motherboard
Future AMD-powered gaming handhelds and notebooks could miss out on a key feature – and it might be a deal breaker for gamers
John Loeffler holding the Ryzen 7 7800X3D
Great news! The best gaming CPU ever made is finally available for its original launch price again
The Ryzen AI Max+ 395 could power the latest generation of powerful mini PCs
The AMD Ryzen AI Max+ 395 dominates as the "most powerful" APU on the market, but its competition is questionable
Intel Lunar Lake concept
Intel's Panther Lake processors won't arrive until Q1 2026 - corroborates previous delay rumors despite former Intel CEO's promise of 2025 launch
Latest in News
Samsung Galaxy S25 from the front
The Now Bar on Samsung One UI 7 is about to get a lot more useful – and could soon match Live Activities on iOS
Marvel Rivals
Marvel Rivals will get two new hero skins for Moon Knight and Black Panther this week meaning I'll now need to farm even more Units
Netflix Ads
Netflix adds HDR10+ support – great news for Samsung TV owners, but don't expect LG and Sony to do the same any time soon
Klipsch Klipschorn AK7 in a room with lots of dark wood furniture and a bare brick wall
Klipsch just updated two of its most iconic stereo speaker designs, keeping these beautiful retro icons on your most-wanted list
FiiO FX17 IEMs
Our favorite budget audiophile brand unveils wired earbuds with 26(!) drivers, electrostatic units, USB-C ultra-Hi-Res Audio, and a not-so-budget price
Nvidia RTX 5080 against a yellow TechRadar background
RTX 5080 24GB version teased by MSI - is it time to admit that 16GB isn't enough for 4K?