Intel Core i5-11600KF and i5-11400F 6-core 12-thread Rocket Lake-S CPU tests leaked

Intel Rocket Lake-S has already been extensively tested by well-known and well-known technical publications even before the company officially revealed the new series. We’ve seen numerous reviews of Core i9-11900 Series Engineering Samples weeks in advance, and more recently we’ve seen retail Core i7-11700K CPUs exhibiting their muscles in reviews by AnandTech and HardwareLuxx.

All of these CPUs were 8-core and 16-thread SKUs, which are likely to be the most common option among Intel enthusiasts, but for people on a budget, the Core i5 series could still be a better offer. A quick analysis of two 6-core and 12-thread Core i5 CPUs can be found on Chiphell. Members of this group were given access to Core i5-11600KF (unlocked CPU without integrated graphics) and Core i5-11400F. (also lacking onboard graphics).

The 11,600KF has a TDP of 125W and is capable of boosting up to 4.9 GHz and has a base clock of 3.9 GHz, according to the CPU-Z. The 11400F, on the other hand, is a 65W model with a base clock of 2.6 GHz and a max turbo clock of 4.4 GHz. Both are based on the Cypress Cove architecture and will be supported by PCI Gen4. Unfortunately, the absence of integrated Xe Gen12 graphics is both part of the F-series.

The CPUs were tested on the Gigabyte Z490 AORUS Ultra motherboard, featuring the newly available BIOS for the 11th Gen Core series. This does not mean that Gigabyte will not release even more optimized BIOS until it is launched, and we have already seen that there is still a lot to gain from the newer microcode. The machine was coupled to 16GB of ZADAK Spark DDR4-3600.

Intel Core i5-11600KF & 11400F Cinebench R15/20, Source: Chiphell

Intel Core i5-11600KF & 11400F Cinebench R23, 3DMark Time Spy, Source: Chiphell

Intel Core i5-11600KF & 11400F CPU-Z 19 & 17, Source: Chiphell

Both CPUs were cooled by the PCCooler triple-fan AIO package named ‘GI-CX360 ARGB.’ The cooling shall be rated at a maximum of 350W. More than enough for those Core i5 CPUs, also in their PL2 power states. Under load in the AIDA64 test, the 11,600KF has an average power consumption of 209W and a temperature of 85C. On the other hand, 11400F registered an average of 145W and 70C.

Intel Core i5-11600KF & 11400F Temperature & Power Consumption, Source: Chiphell

The reviewer notes that there may still be performance improvements until a newer BIOS is published. He tried overclocking on i5-11600KF, but the results were overwhelming. He states that the cap is 4.8 GHz and 4.9 GHz with 1.4V applied, but that it was unstable. The temperature rose noticeably as well, so finally he gave up. Obviously, the 11400F being a non-K component cannot be overclocked, but there are tricks with PL2 and Tau modifications that the reviewer did not test. Playing experiments have not been carried out because the consumer expects improved optimization of the newer BIOS.