Tuesday, September 24th 2019
AMD Could Release Next Generation EPYC CPUs with Four-Way SMT
AMD has completed design phase of its "Zen 3" architecture and rumors are already appearing about its details. This time, Hardwareluxx has reported that AMD could bake a four-way simultaneous multithreading technology in its Zen 3 core to enable more performance and boost parallel processing power of its data center CPUs. Expected to arrive sometime in 2020, Zen 3 server CPUs, codenamed "MILAN", are expected to bring many architectural improvements and make use of TSMC's 7nm+ Extreme Ultra Violet lithography that brings as much as 20% increase in transistor density.
Perhaps the biggest change we could see is the addition of four-way SMT that should allow a CPU to have four virtual threads per core that will improve parallel processing power and enable data center users to run more virtual machines than ever before. Four-way SMT will theoretically boost performance by dividing micro-ops into four smaller groups so that each thread could execute part of the operation, thus making the execution time much shorter. This being only one application of four-way SMT, we can expect AMD to leverage this feature in a way that is most practical and brings the best performance possible.
AMD isn't the first to implement this kind of solution to its processors. IBM has been making CPUs based on POWER ISA for years now that feature four or even eight-way SMT and they are one of the key reasons why POWER CPUs are so powerful. Nonetheless, we can hope to see more details about Zen 3 core design decisions as we approach 2020 and launch of Milan CPUs.
Source:
Hardwareluxx
Perhaps the biggest change we could see is the addition of four-way SMT that should allow a CPU to have four virtual threads per core that will improve parallel processing power and enable data center users to run more virtual machines than ever before. Four-way SMT will theoretically boost performance by dividing micro-ops into four smaller groups so that each thread could execute part of the operation, thus making the execution time much shorter. This being only one application of four-way SMT, we can expect AMD to leverage this feature in a way that is most practical and brings the best performance possible.
159 Comments on AMD Could Release Next Generation EPYC CPUs with Four-Way SMT
They're on a roll!
256T... o_O
@SKBARON nice catch!
NOTHING Innovative about that, at all. AND Amd is about to even start using the +++ HA HA!
AMD, just like apple, nothing new, just copy other peoples ideas and claim as if they thought of it themselves.
AMD is fabless, so they relay on whatever node size is available. Your likening them to Intel is about as accurate as saying only Ferraris go fast with Premium +++ fuel.
Apple doesn't design much, they use ARM designs and check boxes for what options to include.
Intel doesn't have 4 way SMT, they have security plagued prefetch, speculative and branch prediction issues that AMD doesn't due to their willingness to ignore security for higher IPC. Lastly Intel's Fab issues are theirs, they own the fab that can't produce lower pitch yields at acceptable loss rate, and frequency to power scaling.
If you are saying nothing AMD is new then how many 7nm CPUs does Intel have? How many 16 core desktop CPUs does Intel have? How many viable IGPU CPUs does Intel have? It is funny that you mention Apple when AMD is one of their suppliers. I guess RDNA is also based on turing too right?
chiplet architecture.
Infinity fabric.
One chip fits all needs (Entry level desktop to top of the line server)
smt4 (still rumor stage)
CCX design.
Amd's 14NM was way way inferior to Intel's in density, performance and everything and still managed to pretty much match Intel's efficiency.
None the less, interesting stuff. I wount be surprised if it only comes to epyc and threadripper for a start and then maybe ryzen in a near future. If amd comes with 4 way smt on ryzen as well on 16 core+ CPU like ryzen 9 4950X . That's 64 threads on just the little socket. Imagine 64 threads in task manager right before your eyes. That's like porn for geeks:respect:.
Ironically, BOTH companies he accused of "just copying" have done far more measurable work in their fields then the competition has done, CPU wise at least.