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AMD Ryzen 5 PRO 9645
The Ryzen 5 PRO 9645 is a 6-core Zen 5 desktop processor in AMD's Ryzen PRO 9000 series for the AM5 socket, with 12 threads, a 3.9 GHz base clock, up to 5.4 GHz boost and 32 MB of L3 cache in a 65 W TDP. It adds AMD PRO manageability and security features, and AMD lists only a tray part number for the OEM channel.
Pros
- 6 Zen 5 cores and 12 threads with up to 5.4 GHz boost in a 65 W TDP
- 32 MB of L3 cache and 6 MB of L2 cache
- AMD PRO features including DASH remote management, AMD Memory Guard and a firmware TPM
- ECC memory support on compatible motherboards, with DDR5-5600 in two-DIMM configurations
- AMD lists a minimum of 18 months of feature stability and 36 months of software and security support
Cons
- Locked multiplier with no Precision Boost Overdrive or EXPO support, unlike the consumer Ryzen 5 9600X
- Integrated Radeon graphics have only 2 graphics cores, so a discrete GPU is needed for graphics-heavy work
- No official retail price: AMD lists only a tray part number and the chip is supplied to OEMs
- Supported memory speed drops to DDR5-3600 when four DIMMs are installed
Good
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the AMD Ryzen 5 PRO 9645
General
- Announced
- 2025
- Socket
- AM5
- Process
- 4 nm
- Base TDP
- 65 W
- Unlocked multiplier
- No
- Cooler included
- Yes
Cores & Clocks
- Cores
- 6
- Performance cores
- 6
- Efficiency cores
- 0
- Threads
- 12
- Base clock
- 3.9 GHz
- Boost clock
- 5.4 GHz
- L2 cache
- 6 MB
- L3 cache
- 32 MB
Integrated GPU
- iGPU
- AMD Radeon Graphics (2 CU)
- iGPU clock
- 2,200 MHz
Memory
- Memory support
- DDR5-5600
- Max memory
- 192 GB
- Memory channels
- 2
Platform
- PCIe version
- 5
- CPU PCIe lanes
- 28
Benchmarks
- PassMark
- 30,512Top 34%
- PassMark (single thread)
- 4,571Top 11%
Quick answers
Is the AMD Ryzen 5 PRO 9645 good in 2026?
The AMD Ryzen 5 PRO 9645 earns an Inno Score of 66.6/100 (“Good”) based on its specs and benchmark results. The Ryzen 5 PRO 9645 is a 6-core Zen 5 desktop processor in AMD's Ryzen PRO 9000 series for the AM5 socket, with 12 threads, a 3.9 GHz base clock, up to 5.4 GHz boost and 32 MB of L3 cache in a 65 W TDP. It adds AMD PRO manageability and security features, and AMD lists only a tray part number for the OEM channel.
What are the key specs of the AMD Ryzen 5 PRO 9645?
Cores: 6 · Threads: 12 · Boost clock: 5.4 GHz · Socket: AM5
What are the closest alternatives to the AMD Ryzen 5 PRO 9645?
Its closest rivals on InnoReviews are Intel Core i5-13600K, Intel Core i7-13700F, AMD Ryzen 7 7700X — open the comparison pages for a spec-by-spec breakdown.
