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 the arms of leakers earlier than it may well make its manner 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 primarily based on the Zen 4 structure and use the TSMC 5nm node. They’re speculated 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 remaining 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 equivalent 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, increased core counts are met with increased TDPs and decrease base clocks. On this bracket, Genoa has related base clocks to Milan however increased 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 in addition they have increased 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
| 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 outfitted 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 beneath 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 could actually 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.