In context: Late final yr, AMD introduced the fourth-gen Epyc collection, codenamed Genoa. It is now escaped from AMD’s labs and is passing by way of the arms of leakers earlier than it might make its approach onto the open market within the coming months.
In line with 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 presupposed to have twice the density and energy effectivity of their previous collection, Milan, and 25% extra efficiency total.
Yuuki Ans, a prolific leaker within the high-performance compute sector, has revealed a spreadsheet containing among 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 closing but and will change.
Some processors are solely known as engineering samples, abbreviated as ES within the tables under. In circumstances the place P and non-P fashions have an identical specs, the 2 variations are condensed into one row.
8-12 chiplets
| Mannequin | Cores / Threads | Base Clock Velocity | 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. On this bracket, Genoa has comparable base clocks to Milan however larger TDPs, even for the 64-core fashions.
4-6 chiplets
| Mannequin | Cores / Threads | Base Clock Velocity | 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 had been capped at 280W, Genoa’s blast previous that and exceed 300W.
2-3 chiplets
| Mannequin | Cores / Threads | Base Clock Velocity | 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 degree, like 24-core and 16-core fashions geared up with 256 MB cache and base clocks reaching 3.5 GHz. Nevertheless, they proceed the pattern of consuming extra energy than their predecessors. For comparability, Milan’s 64-core fashions had TDPs under 300W, however Genoa’s 16-core fashions attain the 320W threshold.
To energy them, Genoa has a brand new socket referred to as SP5. It might deal with as much as 700W and also will assist Genoa’s counterpart for the cloud, Bergamo. Moreover, 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.