AMD Begins Testing Early EPYC Genoa CPUs As Sample Spotted With 32 Zen 4 Cores, Bigger L2 Cache, 3.4 GHz Boost

AMD seems to have begun testing early EPYC Genoa 7004 CPU samples which will feature the brand new 5nm Zen 4 core architecture.

AMD's EPYC Genoa Early CPU Sample Leaks Out In Geekbench: 32 Zen 4 Cores & Twice The L2 Cache

Tested on the Quartz reference motherboard platform, the AMD EPYC Genoa CPU has the OPN code '100-000000479-13' and is termed as an engineering sample. This matches the OPN codes shared by ExecutableFix back in January 2022.

This specific AMD EPYC Genoa chip is fabricated on the 5nm process node and will rock a total of 32 cores and 64 threads. In terms of clock speeds, the CPU is reported to feature a base clock of 1.20 GHz while the all-core boost is rated at 3.43 GHz. Now, these are preliminary clock speeds and we can't say for sure how well those clocks were being maintained throughout the tests.

As for the cache, the L3 cache remains 32 MB per CCD and this 32 core chip packs four Zen 4 CCDs which will give 128 MB of L3 cache. The L2 cache on the other hand sees a huge bump with a 2x increase over the current Zen 3 design. The AMD EPYC Genoa CPU packs 1 MB of L2 cache per core so that's 32 MB of L2 cache on the chip whereas a 32 core variant within the Zen 3 lineup would feature only 16 MB of L2 cache. The platform featured 32 GB of memory which should be DDR5 since Genoa rocks a DDR5 IMC rather than DDR4 on existing Zen 3 EPYC CPUs.

AMD EPYC Genoa ES CPU Clock Frequencies (Geekbench):

Now what's impressive to see in these benchmarks is that despite a lower 1.2 GHz base and 3.4 GHz boost frequency, the single-core score is reported at 1126 points. For comparison, the AMD Ryzen Threadripper 3970X scores 1255 points and it boosts up to 4.5 GHz on a single-core. The slightly older 2990WX with a 4.2 GHz boost clock on a single-core scores 1014 points. The EPYC 7543 is also a 32 core chip based on the Zen 3 core that boosts up to 3.7 GHz and scores around 1200 points so that's an impressive initial showcase for the upcoming Zen 4 chip. We aren't going to compare the multi-core scores since it does look like the boosting for the EPYC Genoa wasn't working correctly across all cores, hence the low score.

The AMD EPYC Genoa CPUs based on the 5nm process node will be offering up to 96 cores when they land on the new SP5 platform later this year. We are expecting some huge improvement in both single and multi-core performance and this leak is evident of that.

AMD EPYC CPU Families:

Family Name	AMD EPYC Verano	AMD EPYC Venice	AMD EPYC Turin-X	AMD EPYC Turin-Dense	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 9007	EPYC 9006	EPYC 9005	EPYC 9005	EPYC 9005	EPYC 8004	EPYC 9004	EPYC 9004	EPYC 9004	EPYC 7004	EPYC 7003	EPYC 7002	EPYC 7001
Family Launch	2027	2026	2025	2025	2024	2023	2023	2023	2022	2022	2021	2019	2017
CPU Architecture	Zen 7	Zen 6	Zen 5	Zen 5C	Zen 5	Zen 4	Zen 4C	Zen 4 V-Cache	Zen 4	Zen 3	Zen 3	Zen 2	Zen 1
Process Node	TBD	2nm TSMC	4nm TSMC	3nm TSMC	4nm TSMC	5nm TSMC	4nm TSMC	5nm TSMC	5nm TSMC	7nm TSMC	7nm TSMC	7nm TSMC	14nm GloFo
Platform Name	SP7	SP7	SP5	SP5	SP5	SP6	SP5	SP5	SP5	SP3	SP3	SP3	SP3
Socket	TBD	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	TBD	96	128	192	128	64	128	96	96	64	64	64	32
Max Thread Count	TBD	192	256	384	256	128	256	192	192	128	128	128	64
Max L3 Cache	TBD	TBD	1536 MB	384 MB	384 MB	256 MB	256 MB	1152 MB	384 MB	768 MB	256 MB	256 MB	64 MB
Chiplet Design	TBD	8 CCD's (1 CCX per CCD) + 2 IOD?	16 CCD's (1CCX per CCD) + 1 IOD	12 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	DDR5-12800	DDR5-6000?	DDR5-6400	DDR5-6400	DDR5-5200	DDR5-5600	DDR5-4800	DDR5-4800	DDR4-3200	DDR4-3200	DDR4-3200	DDR4-2666
Memory Channels	TBD	16-Channel (SP7)	12 Channel (SP5)	12 Channel	12 Channel	6-Channel	12 Channel	12 Channel	12 Channel	8 Channel	8 Channel	8 Channel	8 Channel
PCIe Gen Support	TBD	128-192 PCIe Gen 6	TBD	128 PCIe Gen 5	128 PCIe Gen 5	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	~600W	500W (cTDP 600W)	500W (cTDP 450-500W)	400W (cDP 320-400W)	70-225W	320W (cTDP 400W)	400W	400W	280W	280W	280W	200W

News Source: Benchleaks

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