AMD 5nm Zen 4 & Zen 4C Cores For Next-Gen EPYC & Ryzen CPUs Receive Improved Support In Linux 5.17 EDAC Driver-February 2024-www.yitit.com

The latest Linux 5.17 Kernel drivers have added improved support for AMD's upcoming Zen 4 & Zen 4C cores for next-gen EPYC & Ryzen CPUs.

AMD's 5nm Zen 4 & Zen 4C Cores For Next-Gen EPYC & Ryzen CPUs Receive Further Support In Linux 5.17 Drivers

As reported by Phoronix, the one go-to source for all your Linux updates, the tech outlet spotted that the latest Linux 5.17 EDAC (Error Detection and Correction) drivers have added support for AMD's next-gen Zen cores, the Zen 4 & Zen 4C.

The new EDAC drivers not only add Zen 4 'AMD Family 19h Models 10h-1Fh' and Zen 4C 'AMD Family 19h Models A0h-AFh' support but also come with DDR5 support in both RDDR5 & LRDDR5 flavors. Since RDDR5 and LDDR5 memory standards are most commonly used in servers and data centers, this driver is geared mostly towards the AMD EPYC Genoa and Bergamo lineup which are expected to utilize the latest Zen 4 cores. In addition to that, Linux 5.17 Kernel is also expected to add several improvements and optimizations for AMD's upcoming and existing CPUs along with P-state capabilities.

Back in November, Kernel patches for Linux operating system also added temperature monitoring support for AMD CPUs with up to 12 CCDs, once again targeting the next-gen Zen 4 powered EPYC lineup. AMD has already acknowledged that they will be utilizing an optimized 5nm node by TSMC for next-gen EPYC & Ryzen 7000 CPUs that deliver twice the density, twice the power efficiency, and more than 25% performance gain vs Zen 3 cores.

The Zen 4 cores will power both the EPYC Genoa with up to 96 cores for General Purpose computing when it launches later this year while EPYC Bergamo will feature up to 128 Zen 4C cores that are optimized for cloud-native computing. EPYC Bergamo is expected to launch in 1H 2023.

The main competitor of AMD's EPYC Genoa lineup would beIntel'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. 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 by 2022.

AMD EPYC CPU Families:

Family Name	AMD EPYC Venice	AMD EPYC Turin-Dense	AMD EPYC Turin-X	AMD EPYC Turin	AMD EPYC Siena	AMD EPYC Bergamo	AMD EPYC Genoa-X	AMD EPYC Genoa	AMD EPYC Milan-X	AMD EPYC Milan	AMD EPYC Rome	AMD EPYC Naples
Family Branding	EPYC 11K?	EPYC 10K?	EPYC 10K?	EPYC 10K?	EPYC 8004	EPYC 9004	EPYC 9004	EPYC 9004	EPYC 7004	EPYC 7003	EPYC 7002	EPYC 7001
Family Launch	2025+	2025?	2025?	2024	2023	2023	2023	2022	2022	2021	2019	2017
CPU Architecture	Zen 6?	Zen 5C	Zen 5	Zen 5	Zen 4	Zen 4C	Zen 4 V-Cache	Zen 4	Zen 3	Zen 3	Zen 2	Zen 1
Process Node	TBD	3nm TSMC?	4nm TSMC	4nm TSMC	5nm TSMC	4nm TSMC	5nm TSMC	5nm TSMC	7nm TSMC	7nm TSMC	7nm TSMC	14nm GloFo
Platform Name	TBD	SP5	SP5	SP5	SP6	SP5	SP5	SP5	SP3	SP3	SP3	SP3
Socket	TBD	LGA 6096 (SP5)	LGA 6096 (SP5)	LGA 6096	LGA 4844	LGA 6096	LGA 6096	LGA 6096	LGA 4094	LGA 4094	LGA 4094	LGA 4094
Max Core Count	384?	192	128	128	64	128	96	96	64	64	64	32
Max Thread Count	768?	384	256	256	128	256	192	192	128	128	128	64
Max L3 Cache	TBD	384 MB	1536 MB	384 MB	256 MB	256 MB	1152 MB	384 MB	768 MB	256 MB	256 MB	64 MB
Chiplet Design	TBD	12 CCD's (1CCX per CCD) + 1 IOD	16 CCD's (1CCX per CCD) + 1 IOD	16 CCD's (1CCX per CCD) + 1 IOD	8 CCD's (1CCX per CCD) + 1 IOD	12 CCD's (1 CCX per CCD) + 1 IOD	12 CCD's (1 CCX per CCD) + 1 IOD	12 CCD's (1 CCX per CCD) + 1 IOD	8 CCD's (1 CCX per CCD) + 1 IOD	8 CCD's (1 CCX per CCD) + 1 IOD	8 CCD's (2 CCX's per CCD) + 1 IOD	4 CCD's (2 CCX's per CCD)
Memory Support	TBD	DDR5-6000?	DDR5-6000?	DDR5-6000?	DDR5-5200	DDR5-5600	DDR5-4800	DDR5-4800	DDR4-3200	DDR4-3200	DDR4-3200	DDR4-2666
Memory Channels	TBD	12 Channel (SP5)	12 Channel (SP5)	12 Channel	6-Channel	12 Channel	12 Channel	12 Channel	8 Channel	8 Channel	8 Channel	8 Channel
PCIe Gen Support	TBD	TBD	TBD	TBD	96 Gen 5	128 Gen 5	128 Gen 5	128 Gen 5	128 Gen 4	128 Gen 4	128 Gen 4	64 Gen 3
TDP (Max)	TBD	480W (cTDP 600W)	480W (cTDP 600W)	480W (cTDP 600W)	70-225W	320W (cTDP 400W)	400W	400W	280W	280W	280W	200W