Intel Arrow Lake flagship Core Ultra 9 285K reportedly suffers P-core boost clock regression vs 14th and 13th-gen Intel CPUs

Intel is known for pushing clock frequencies to new heights with its flagship desktop CPUs. Intel’s 13th-generation Core i9-13900K had a max clock speed of 5.8 GHz vs 5.2 GHz of its predecessor the Core i9-12900K. The Core i9-13900KS managed to top this number by becoming the first consumer desktop CPU with a 6 GHz out-of-the-box boost clock. Intel took the clock speed game even further with the Core i9-14900KS as the CPU can boost to a whopping 6.2 GHz.

However, it now appears that Intel’s next-generation desktop flagship CPU from the Arrow Lake lineup will see a slight clock speed regression for the P-cores.

Intel Core Ultra 9 285K P and E-core boost frequencies

According to OneRaichu’s rather cryptic message on X, the Intel Core Ultra 9 285K will have a P-core boost frequency of 5.7 GHz for a single core. The all-core boost speed reportedly tops out at 5.4 GHz. For the E cores, the single-core and all-core boost frequencies allegedly stand at 4.7 and 4.6 GHz respectively.

To put these numbers into perspective, the proposed single-core max clock speed for the Core Ultra 9 285K is 300 MHz lower than the Core i9-14900K and 100 MHz lower than the Core i9-13900K. However, the Core Ultra 9 285K’s E-core boost clock is 300 MHz and 400 MHz higher than the E-core turbo frequency of the Core i9-14900K and Core i9-13900K respectively.

Moreover, the purported P-core boost frequency of the Core Ultra 9 285K is the same as that of the latest AMD Ryzen 9 9950X and Zen 4 Ryzen 9 7950X (Available on Amazon).

Intel is expected to launch the ARL-S desktop Core Ultra 200 CPUs in October of this year. So, we’ll have to wait a few months to find out the performance and power implications of the purported 5.7 GHz clock speed of the Core Ultra 9 285K. However, there is always a chance that the final clock frequencies are different than what OneRaichu is suggesting. So, take the information with a grain of salt.