are same generation cores made equal

[Aggravated Salmon]

Are Haswell/Broadwell/Skylake etc. cores made equal

e.g. 1) a 60 core 4 x E7-8895 V2 with an 8 core turbo boost of 3.6Ghz will perform the same as a i7-4930K with a 6 core turbo boost of 3.6Ghz (both Ivy-Bridge 3.6Ghz cores) in any 6 core task?

 

or

 

e.g. 2) an i7-8086K with turbo boost and hyperthreading disabled and cores limited to 4 will perform the same as an i3-8350K (both 4 x 4Ghz Coffee Lake cores)

 

or for the 60 core cpus, are there windows core usage handling overhangs that lessens the performance?

[Fasauceome]

Yep, any cores on the same microarchitecture will perform identically at the same clock speed (barring any differences in cache)

[Mister Woof]

Theres usually a little bit more to it than just number of cores and threads and clock speed.  As noted above, the cache  size is different with the i3-8350k being 8mb vs the 50% larger 12mb on the 8700/8086k.

 

Another consideration is ring vs mesh; iirc server and some HEDT skylakes use mesh vs. the S desktop counterparts that use ring, and that can affect performance as core-core latency is worse on mesh. So potentially even a core, thread, and frequency-limited professional chip may perform differently than the desktop counterpart.

 

Also depending on Motherboard, you will also have a RAM bandwidth difference between professional/HEDT and S desktop.