Overclocker Luumi has set a new HWBot record for the Intel Core i5-4670K in Cinebench R11.5, scoring 10.8 cb with the chip at 6,301 MHz under liquid nitrogen. According to TechPowerUp, the result edges out a previous 10.76 cb run by Strat at 6,249 MHz that stood for around 12 years. It is a record for that one processor category, not for all quad-core chips or the whole benchmark.
Why a tiny margin still counts
The gap between old and new record is about 0.04 cb. That is the point of single-SKU leaderboards. When everyone uses the same silicon, the contest shifts to chip selection, cooling, tuning and patience. TechPowerUp notes the board is tight: the third-place score of 10.74 cb comes from a field of 187 submissions. Beating a mark after more than a decade, by a hair, suggests the 22 nm Haswell part is close to what the silicon can deliver.
The clock figure is also useful context. TechPowerUp puts 6.3 GHz at roughly 66% above the chip’s 3.8 GHz boost clock, on a four-core, four-thread design. Few current parts see that kind of headroom outside extreme cooling, and modern chips typically ship much closer to their limits.
The period-correct bench is a rules story
The setup was deliberately old: an ASRock Z97 OC Formula board, 4 GB of XPG DDR3 and a Corsair AXi 1600 power supply. Luumi also ran Windows 7 64-bit. TechPowerUp says HWBot’s R11.5 rules apparently do not allow pre-Skylake Intel chips on newer Windows versions without BenchMate, its benchmark validation tool. Tom’s Hardware adds that some older staples, such as 3DMark tests from DX10 and earlier, have problems on modern machines that make results invalid for HWBot rankings.
That matters beyond hobbyists. Benchmarks are only comparable when the software, operating system and timing behaviour are controlled. As old tests age, keeping them trustworthy needs either legacy operating systems or tooling that polices the environment. Tom’s Hardware found R11.5 itself still runs on Windows 11 without fuss, but running is not the same as being accepted for ranking.
Old silicon versus today’s laptops
Both outlets note that a modern 12-core, 24-thread laptop scores about four times higher, even in a quiet mode. So this is not a performance story. A record-cooled 2013 desktop part loses badly to an ordinary portable. The achievement is about the margin of tuning, and about a community that values a leaderboard slot for something other than the newest flagship.
Tom’s Hardware quotes a community member who welcomed a result on the HWBot homepage with no X3D CPU or RTX 5090 involved. That reflects a real tension in competitive overclocking, where top rankings tend to track access to expensive, scarce hardware.
What to watch
- Whether Strat, Moose83 or others answer with a better i5-4670K run, given how narrow the lead is.
- How HWBot handles aging benchmarks, including BenchMate requirements and legacy Windows rules.
- Whether more single-SKU retro categories draw attention as current flagship hardware stays expensive.
Luumi is no newcomer to this: TechPowerUp says the overclocker set an 8-core Cinebench world record on an EVGA Z390 Dark in 2018. The new result is small, but it shows that mature silicon and well-defined rules can keep a competition alive for over a decade.