Through blood, sweat, and liquid nitrogen, G.Skill and ASRock now lay claim to the new DDR5 frequency overclocking world record. Led by veteran overclocker Splave, the team managed to push a 24GB Trident Z5 CK RGB kit up to 6,333MHz (12,666MT/s).
Reaching such lofty speeds comes with some compromises. For example, timings on the module are out the window sitting at 68-127-127-127-2 (tCAS-tRCD-tRP-tRAS-tCR). It’s also worth nothing that this achievement stems from a single DDR5 module, rather than running in dual-channel. That’s not forgetting the liquid nitrogen cooling either, for both RAM and CPU.
The team achieved this record through the use of CUDIMM modules. This new type of RAM promises to improve stability and deliver higher transfer rates out of the box. For instance, the Trident Z5 CK stick used here can operate at up to 9,600MT/s without the aid of LN2. More pertinently, it also appears that this new type of memory also affords more headroom for overclockers too.
Complementing the RAM was an Intel Core Ultra 9 285K processor and ASRock’s Z890 Taichi OCF motherboard. This combo was likely chosen given the Z890 platform’s higher supported RAM speeds, while the board only has two DIMM slots to increase stability. Interestingly, the team reduced the CPU’s core count and frequency, to just four cores (two performance and two efficient) and 2GHz, respectively. This was likely a bid to improve memory controller stability.
Despite the extra oomph CUDIMM offers, there’s only a small 70MHz gap between this record and the prior best. This could either be indicative of DDR5 having little more to offer, or overclockers needing more time to learn how to push the new memory type.
In any case, congratulations are in order to G.Skill and ASRock, but most importantly to Splave and the overclocking team for this achievement. You can check out the finer details of Splave’s results on HWBot or CPU-Z. I can’t wait to see what transfer speeds the future has in store.
