Shown is AMD SP6 socket for next generation Zen4 EPYC series, same size as SP3

Shown is AMD SP6 socket for next generation Zen4 EPYC series, same size as SP3

AMD SP5 socket has been confirmed

It didn’t take long for the rumors surrounding AMD’s next-gen SP6 socket to be confirmed by newly leaked photos.

Over on the AnandTech forums one can find photos and schematics for the socket codenamed SP6. This socket has been explained in leaked slides as a platform for edge and telecom systems, so where performance optimizations are as critical as performance. According to these slides, this socket would support EPYC processors from Genoa (Zen4) series with up to 32 cores and Bergamo (Zen4c) series with up to 64 cores. Power would also be limited to 225W, which is almost half of what the full SP5 socket can support.

AMD SP6 (LGA4844), source: SteinFG

The SP6 socket looks a lot like the SP3 socket for the current Milan series. Although the size is identical (58.5 x 75.4 mm), the SP6 has a different LGA package with 4844 pins. That’s a significant reduction from 6096 for the SP5 socket.

  • Socket SP3 – LGA 4094 – 58.5 x 75.4mm
  • Socket SP5 – LGA 6096 – 76.0 x 80.0mm
  • Socket SP6 – LGA 4844 -58.5×75.4mm

It goes without saying that SP6, SP5 and SP3 processors will not be compatible with each other. This also means that AMD has to produce two different EPYC Genoa/Turin series for each socket.

This document defines the requirements for a 4844-position, 0.94mm × 0.81mm pitch surface-mount land grid array (SM-LGA) socket – referred to herein as socket SP6 – for use with the organic AMD 4844-position Land Grid Array (OLGA) packages with substrate dimensions of 58.5mm × 75.4mm. The SP6 socket shown in Figure 1 is designed to provide a reliable electrical connection between the printed circuit board (PCB) and the 4844 pads of the OLGA package throughout the life of the product.

— SteinFG, AnandTech forums

AMD SP6 (LGA4844), source: SteinFG

One of our readers suggested that the 4th Gen EPYC series could now be divided into the powerful 7004 series and the efficiency-focused EPYC 5004 CPUs, which makes a lot of sense. Additionally, the latter option could open up more opportunities for AMD to enter the HEDT consumer market.

Rumored specifications of the AMD EPYC processor series
VideoCardz 3rd generation EPYC
“Milan / Milan-X

4th generation EPYC
“Genoa / Genoa-X
4th generation EPYC
5th Gen EPYC “Turin” Start 2021 2022
2022 2023/2024 Architecture 7nm Zen3 5nm Zen4
5nm Zen4c Zen5 Power outlet
SP3 (LGA4094)
SP5 (LGA-6096)
SP6 (LGA-4844)
SP5 (LGA-6096)
SP6 (LGA-4844)
SP5 (LGA-6096) SP6 (LGA-4844) modules/chiplets 8xCCD + 1xIOD 12xCCD + 1xIOD
TB TB Maximum cores 64C / 128T 96C/192T
128C / 256T 256C/512T L2 cache per core 0.5MB 1MB
TB TB L3 cache per CCX 32MB / 96MB
32MB / ?? United Kingdom TB
memory channels
8 channel
12-channel (SP5)
6-channel (SP6)
12-channel (SP5) 6-channel (SP6) 12-channel (SP5) 6-channel (SP6) memory support
DDR4-3200 DDR5-5200 DDR5-5200
PCIe lanes
128x Gen4
160x Gen5 (SP5)
96x Gen5 (SP6) 160x Gen5 (SP5) 96x Gen5 (SP6)
Maximum cTDP
200-400W (SP5)

70-225W (SP6) 200-400W (SP5)

70-225W (SP6)TBCSource: AnandTech Forums via @Olrak29_

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