Intel 14th Generation CPU Review Feat i5 14600K, i7 14700K & i9 14900K

Clock Speed Behaviour

All processors come with a pre-defined clock speed for each core and thread. We run Cinebench R23 in both single-core and multi-core tests to see how each processor and its individual cores react to the load. This not only shows us how each processor operates and which cores are the superior cores but also tells us if there are any issues stopping the processor from operating in the correct way.

Intel Core i5 14600K

On the i5 14600K during a Cinebench multi-core run, we found all of the P-Cores sitting at a comfortable 5.3GHz, while the E-Cores stayed at their maxed-out 4GHz boost clock.

During a single-core run, the clock speed behaviour was exactly the same, with the P-Cores maxing out at 5.3GHz, and the same 4GHz for the Efficiency cores so at least we’re getting the full potential out of the i5 in both types of workload.

Intel Core i7 14700K

Moving up to the i7 14700K and putting that through the same multi-core run and we do see that new 5.6GHz boost speed for a split second on P-Core 4 and 5, though for the most part, the cores are running at around 5.3 to 5.4GHz on the P cores while the E-cores sit back at their max rated speed of 4.3GHz.

When we run the single-core test we do find again P-core 4 and 5 boosting up to 5.6GHz for a slightly longer period, showing us that they are the strongest cores out of the 8, while all other performance cores remained at a steady 5.5GHz.

Intel Core i9 14900K

Then lastly, with the i9 14900K and looking at clock speed behaviour, in multi-core Cinebench we see P-Cores 6 and 7 hitting 6GHz for a brief period, while all other P-Cores managed a max of 5.7GHz and hold that pretty steady through some of the test. The Efficiency cores mostly stuck around 4.2 to 4.3GHz, with all cores occasionally peaking at 4.4GHz.

As we move over to single core P-Cores 6 and 7 again hit 6GHz for a moment, and then dropped to 5.7GHz along with all other Performance cores while the E-Cores all boosted to their max rated 4.4GHz boost speed for the entire test.