In context: Late final yr, AMD introduced the fourth-gen Epyc sequence, codenamed Genoa. It’s now escaped from AMD’s labs and is passing via the palms of leakers earlier than it could possibly make its means onto the open market within the coming months.
According to AMD CEO Lisa Su’s keynote final yr, Genoa processors ought to have as much as 96 cores based mostly on the Zen 4 structure and use the TSMC 5nm node. They’re alleged to have twice the density and energy effectivity of their previous sequence, Milan, and 25% extra efficiency general.
Yuuki Ans, a prolific leaker within the high-performance compute sector, has revealed a spreadsheet containing a number of the specs of eighteen fashions. His leaks appear to return from AMD’s companions and are often good, however the finer particulars, like clock speeds and TDPs, aren’t ultimate but and will change.
Some processors are solely known as engineering samples, abbreviated as ES within the tables beneath. In instances the place P and non-P fashions have similar specs, the 2 variations are condensed into one row.
8-12 chiplets
| Model | Cores / Threads | Base Clock Speed | TDP | L3 Cache |
|---|---|---|---|---|
| Epyc 9654P | 96 / 192 | 2.00 – 2.15 GHz | 360W | 384 MB |
| ES | 96 / 192 | 2.00 – 2.15 GHz | 320 – 400W | 384 MB |
| ES | 84 / 168 | 2.00 GHz | 290W | 384 MB |
| Epyc 9534 | 64 / 128 | 2.30 – 2.40 GHz | 280W | 256 MB |
| ES | 64 / 128 | 2.50 – 2.65 GHz | 320 – 400W | 256 MB |
As you’d count on, larger core counts are met with larger TDPs and decrease base clocks. In this bracket, Genoa has related base clocks to Milan however larger TDPs, even for the 64-core fashions.
4-6 chiplets
| Model | Cores / Threads | Base Clock Speed | TDP | L3 Cache |
|---|---|---|---|---|
| Epyc 9454(P) | 48 / 96 | 2.25 – 2.35 GHz | 290W | 256 MB |
| ES | 48 / 96 | 3.20 – 3.40 GHz | 360W | 256 MB |
| Epyc 9354(P) | 32 / 64 | 2.75 – 2.85 GHz | 280W | 256 MB |
| ES | 32 / 64 | 3.20 – 3.40 GHz | 320W | 256 MB |
| ES | 32 / 64 | 2.70 – 2.85 GHz | 260W | 256 MB |
| Epyc 9334 | 32 / 64 | 2.30 – 2.50 GHz | 210W | 128 MB |
Genoa’s mid-tier fashions are clocked far above Milan’s, however additionally they have larger TDPs. Whereas Milan’s 48-core and 32-core fashions have been capped at 280W, Genoa’s blast previous that and exceed 300W.
2-3 chiplets
| Model | Cores / Threads | Base Clock Speed | TDP | L3 Cache |
|---|---|---|---|---|
| Epyc 9274F | 24 / 48 | 3.40 – 3.60 GHz | 320W | 256 MB |
| Epyc 9254 | 24 / 48 | 2.40 – 2.50 GHz | 200W | 128 MB |
| Epyc 9224 | 24 / 48 | 2.15 – 2.25 GHz | 200W | 64 MB |
| Epyc 9174F | 16 / 32 | 3.60 – 3.80 GHz | 320W | 256 MB |
| Epyc 9124 | 16 / 32 | 2.60 – 2.70 GHz | 200W | 64 MB |
Genoa presents some good choices at this stage, like 24-core and 16-core fashions geared up with 256 MB cache and base clocks reaching 3.5 GHz. However, they proceed the pattern of consuming extra energy than their predecessors. For comparability, Milan’s 64-core fashions had TDPs beneath 300W, however Genoa’s 16-core fashions attain the 320W threshold.
To energy them, Genoa has a brand new socket known as SP5. It can deal with as much as 700W and also will assist Genoa’s counterpart for the cloud, Bergamo. Additionally, it helps new options, together with 12-channel DDR5 and PCIe 5.0.
Genoa is scheduled for this yr and will arrive quickly. Bergamo ought to arrive within the first half of subsequent yr.
