AMD EPYC Genoa Zen 4 CPUs Rumored To Feature AVX3-512 & BFLOAT16 Instruction Sets, Firing Back at Intel Xeons

Another AMD EPYC Genoa 'Zen 4' CPU Leaks Out, This Time A 16 Core Chip With 2 Active CCDs

After the huge dump of information that we got for AMD's next-generation EPYC Genoa Zen 4 CPU lineup yesterday, another rumor has popped up which states that AMD is going to feature two new technologies on Genoa that could pretty much destroy whatever hope Intel had left for its Sapphire Rapids & even next-generation Xeon lineups.

AMD EPYC Genoa CPUs Featuring Zen 4 Cores Rumored To Be Equipped With AVX3-512 & BFLOAT16 Instructions

According to an alleged slide posted on Chiphell Forums (via HXL), it is reported that AMD's Zen 4 core architecture for EPYC Genoa CPUs would allow for more than 64 cores per socket, 2 threads per core, and in up to 2 socket configurations. This is pretty much a reiteration of what was leaked out yesterday.

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But what's next is quite interesting. It is stated that AMD's Zen 4 core architecture will feature 57-bit virtual and 52-bit physical addressing. The Zen 4 core architecture will also feature two new ISA's & those include AVX3-512, BFLOAT16, and a few other extensions that have not been stated. If AMD is definitely incorporating AVX 512 instructions on its next-generation lineup, which seems to be the case since ExecutableFix also validates this claim, AMD might get a significant advantage over Intel's Sapphire Rapids lineup.

The BFLOAT16 instruction set was also first featured on the Cooper Lake Xeon lineup from Intel and AMD is all set to introduce it for the EPYC platform too. Having AVX 512 and BFLOAT16 could take away all the advantages that Intel had. In mainstream HPC and datacenter benchmarks, AMD was cruising way ahead of Intel with the only saving grace for Intel being the few AVX-512 and AI accelerated workloads. AMD has the same level of ISA as Intel could just crush the Xeon lineup for ages to come. With that said, AVX-512 hardware does require a lot more power to run and that's one reason why we saw a huge increase in TDP for the upcoming lineup with TDPs of up to 400W being rumored.

Now, AMD is also giving it's EPYC Genoa lineup more cores and a brand new platform. The slide claims that there have been design and manufacturing improvements to performance & efficiency so we might be looking at some huge performance numbers for Genoa.

The main competitor of AMD's EPYC Genoa lineup would be Intel's Sapphire Rapids Xeon family which is expected to launch in 2022 too with PCIe Gen 5 and DDR5 memory support. The lineup was recently rumored to not get a volume ramp until 2023 which you can read more about over here. Overall, AMD's Genoa lineup seems to be in great form after this leak and could be a major disruption for the server segment if AMD plays its cards right till Genoa's launch.

AMD EPYC CPU Families:

Family NameAMD EPYC VeniceAMD EPYC TurinAMD EPYC SienaAMD EPYC BergamoAMD EPYC Genoa-XAMD EPYC GenoaAMD EPYC Milan-XAMD EPYC MilanAMD EPYC RomeAMD EPYC Naples
Family BrandingEPYC 7007?EPYC 7006?EPYC 7004?EPYC 7005?EPYC 7004?EPYC 7004?EPYC 7003X?EPYC 7003EPYC 7002EPYC 7001
Family Launch2025+2024-2025?20232023202320222022202120192017
CPU ArchitectureZen 6?Zen 5Zen 4Zen 4CZen 4 V-CacheZen 4Zen 3Zen 3Zen 2Zen 1
Process NodeTBD3nm TSMC?5nm TSMC4nm TSMC5nm TSMC5nm TSMC7nm TSMC7nm TSMC7nm TSMC14nm GloFo
Platform NameTBDSP5 / SP6SP6SP5SP5SP5SP3SP3SP3SP3
SocketTBDLGA 6096 (SP5)
LGA XXXX (SP6)
LGA 4844LGA 6096LGA 6096LGA 6096LGA 4094LGA 4094LGA 4094LGA 4094
Max Core Count384?25664128969664646432
Max Thread Count768?51212825619219212812812864
Max L3 CacheTBDTBD256 MB?TBD1152 MB?384 MB?768 MB?256 MB256 MB64 MB
Chiplet DesignTBDTBD8 CCD's (1CCX per CCD) + 1 IOD12 CCD's (1 CCX per CCD) + 1 IOD12 CCD's (1 CCX per CCD) + 1 IOD12 CCD's (1 CCX per CCD) + 1 IOD8 CCD's with 3D V-Cache (1 CCX per CCD) + 1 IOD8 CCD's (1 CCX per CCD) + 1 IOD8 CCD's (2 CCX's per CCD) + 1 IOD4 CCD's (2 CCX's per CCD)
Memory SupportTBDDDR5-6000?DDR5-5200DDR5-5600?DDR5-5200DDR5-5200DDR4-3200DDR4-3200DDR4-3200DDR4-2666
Memory ChannelsTBD12 Channel (SP5)
6-Channel (SP6)
6-Channel12 Channel12 Channel12 Channel8 Channel8 Channel8 Channel8 Channel
PCIe Gen SupportTBDTBD96 Gen 5160 Gen 5160 Gen 5160 Gen 5128 Gen 4128 Gen 4128 Gen 464 Gen 3
TDP RangeTBD480W (cTDP 600W)70-225W320W (cTDP 400W)200W (cTDP 400W)200W (cTDP 400W)280W280W280W200W
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