i5 6400 OC vs. i5 6500
i5 6400 OC vs. i5 6500
If the i5 6400 has a multiplier of 27 and the i5 6500 of 32, using the same motherboard with either CPU, and assuming the motherboard is the main constraint (not the processor needing extra cooling), you would achieve a maximum bus overclock based on the difference between the two multipliers.
At the same speeds, their results will match. But you can only increase the clock speed using BCLK through an outdated BIOS on specific boards. I understand, but what I'm curious about is how much higher the clock speed can be achieved with the 6500 compared to the 6400 (both in overclocking mode).
As @dudeman509 mentioned, your choices for overclocking are going to be restricted depending on the motherboard and BIOS version you have, since neither CPU is fully unlocked. So, if you're able to use the BLCK method to overclock, then both CPUs should be possible to do similarly. If not, the 6500 might run a bit faster because of its higher stock speeds.
I understand the need for a particular BIOS to boost a non-K processor's speed. I'm curious about which one will reach a higher clock speed after overclocking and by how much more.
If the i5 6400 has a multiplier of 27 and the i5 6500 of 32, using the same motherboard with either CPU, and assuming the motherboard is the main constraint (not the processor needing extra cooling), you would achieve a maximum bus overclock based on the difference between the two multipliers.