‘AMD will release Ryzen 3000 refresh based on Zen 2 in July’ – Computer – News

Since AMD often lasts a long time with one socket, it may be worth waiting for the introduction of a new socket and associated CPU. If you purchase a Ryzen 4000 on the AM4 socket, you are already stuck in terms of upgrade path; if this has any meaning to you.

For me it doesn’t really have that; I buy a powerful motherboard and the fastest CPU I can afford with 2x the memory of what the middle class is at the time of purchase, and then that stuff will last 4-6 years.

My current computer is 4 years old, so I can wait a while. That’s why I’d rather wait for a new chipset. I don’t like both the X570 (chipset fan) from AMD and the X299 (old) from Intel. As soon as one of the two comes out with a chipset I like that can hold a CPU with 12 cores or more, I think I’ll go.

What I hope AMD tackles in the Ryzen 4000 and above is the poor performance of the BMI2 and PEXT instructions. When you compile a program, this applies:

PEXT> BMI2> POPCNT (in descending speed).

A piece of software that uses POPCNT is currently much faster on the AMD CPUs than the fastest possible PEXT version at Intel … but running a PEXT version on AMD is super slow compared to the POPCNT version of the program. Then you will have to make two compilations; one with PEXT for Intel, one with POPCNT for AMD.

If AMD manages to release both a chipset I like and a CPU in which a PEXT / BMI2 executable runs just as fast or faster than a POPCNT version, I think I won’t be in for more than a day will hesitate to build a new computer.

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