AMD’s Zen 3 Processors May Crack 5 GHz Barrier

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Igor Wallossek has returned with two new OPNs for AMD’s upcoming Ryzen 9 4950X/5950X processor. Yesterday’s report suggested that this Zen 3-based SKU would boost to 4.8 GHz, which is already admirable, but one of the new OPNs alludes to an even better max boost clock: 4.9 GHz. Needless to say, this has gotten Ryzen fans wondering whether AMD has finally discovered the secret sauce to attaining that magical 5 GHz figure.

“The faster of the two samples now boosts to 4.9 GHz, while the base clock is set to 3.7 GHz,” writes Wallossek. “In contrast to the previous ES, this is another visible increase and shows that you probably also slowly fight your way towards the 5 GHz mark at the boost clock. Whether this psychological and especially for marketing so important brand will be cracked is still open. But at least with this ES the next step has been taken. From one of the slower ES could then perhaps also emerge the Ryzen 9 4950 / 5950 without X, which is certainly needed in the portfolio.”

Wallossek also revealed that AMD will be adding two new functions that Intel has had for a couple of years now: Enhanced Repeat Move String (ERMS) and Fast Short Repeat Move String (FSRM). These should have some positive effects on performance.

“As early as 2013, Intel decided to make a major revision to REP MOVS and implemented the CPUID ERMSB bit (Enhanced REP MOVSB) to indicate that the CPU could handle byte-sized motion and memory instructions quickly and efficiently,” Wallossek explained. “In addition to adding FSRM to the x86 feature code, ERMS is therefore also very interesting, as it allows the bandwidth to be increased considerably, which is a not inconsiderable advantage and logically complements FSRM.”

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