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AMD Ryzen Threadripper PRO 3975WX vs AMD Ryzen Threadripper PRO 5995WX

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

AMDRyzen Threadripper PRO 3975WXAMDRyzen Threadripper PRO 5995WX
Overview
ReleasedSeptember 2020March 2022
Cores and clocks
Cores3264
Threads64128
Base clock3.5 GHz2.7 GHz
Boost clock4.2 GHz4.5 GHz
L3 cache128 MB256 MB
CoresCastle Peak; Zen 2. Boxed product ID 100-100000086WOF; tray ID 100-000000086. Announced 14 July 2020. Lenovo stated September 2020 availability for the first ThinkStation P620 systems, and confirmed them shipping on 14 October. Release is kept at OEM month precision; an exact first-sale day for this model is unpublished. AMD later announced March 2021 standalone retail availability for this model.Chagall PRO; Zen 3. Boxed product ID 100-100000444WOF; tray ID 100-000000444. AMD confirmed all five 5000 WX models available in Lenovo ThinkStation P620 systems on 8 March 2022; this is the OEM release, before later standalone retail availability.
ClocksPrecision Boost 2; maximum boost up to 4.2 GHz. Locked for overclocking.Precision Boost 2; maximum boost up to 4.5 GHz. Unlocked for overclocking; OEM system restrictions can differ.
CacheL1 2048 KB; L2 16 MB; L3 128 MBL1 4096 KB; L2 32 MB; L3 256 MB
Graphics and AI
Built-in graphicsNoNo
GraphicsA separate graphics card is requiredA separate graphics card is required
Platform
SocketsWRX8sWRX8
Base power280 W280 W
UnlockedNoYes
Memory supportDDR4; eight channels; up to 3200 MT/s. AMD’s exact-model launch table supports up to 2 TB ECC UDIMM, RDIMM or LRDIMM memory; motherboard and system limits can be lower.DDR4; eight channels; up to 3200 MT/s. AMD’s launch specification supports up to 2 TB ECC UDIMM, RDIMM or LRDIMM memory; motherboard and system limits can be lower.
PCIePCIe 4.0; AMD’s exact-model launch table lists 128 lanesPCIe 4.0; AMD’s exact-model launch table lists 128 lanes
ProcessCPU cores: TSMC 7 nm FinFETCPU cores: TSMC 7 nm FinFET
CoolerAMD’s current specification does not state whether a cooler is included. Maximum operating temperature 90°C.AMD’s current specification does not state whether a cooler is included. Maximum operating temperature 95°C.

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