AMDExcellentServer

AMD EPYC 9B45

Explore AMD EPYC 9B45 technical reviews, specifications and benchmark results, with practical context for server workloads and platform planning.

Last updated: 2026-10-20
9.3/ 10
Technical rating

Excellent

AMD EPYC 9B45 is a Server processor with 32 cores and 256 threads. It runs at 2.1 GHz and boosts up to 3.7 GHz. It records a PassMark CPU Mark of 158790 and a single-thread rating of 3540. Its stated TDP is 390 W.

CPU Mark158,790
5 samples
Single Thread3,540
Overall rank#5
of 6,054
Reference price$13,564.00

Technical assessment

A summary based on specifications and results.

Excellent
9.3Excellent

AMD EPYC 9B45 is a Server processor with 32 cores and 256 threads. It runs at 2.1 GHz and boosts up to 3.7 GHz. It records a PassMark CPU Mark of 158790 and a single-thread rating of 3540. Its stated TDP is 390 W.

Specification context

What do these specifications mean in practice?

The AMD EPYC 9B45 is a Server released in 2025. Recorded specifications include 32 cores and 256 threads, up to 3.70 GHz turbo, a 390 W reference TDP, a 158,790 CPU Mark. Use these figures to understand its position, then compare the results with your software and the complete platform.

Reading guide

Read the performance results

The 158,790 CPU Mark is a broad overall-performance measure, while the 3,540 single-thread result adds context for less-parallel work. Compare the nearby alternatives on this page and do not treat one score as a verdict for every application.

Platform and compatibility

It uses socket SP5. A matching socket is only the first check; confirm the official motherboard CPU-support list, BIOS revision and board power limits.

Memory and power

The 390 W TDP helps size the cooling class, but it is not the same as peak wall-power consumption.

FAQ

Common processor questions

What are the key AMD EPYC 9B45 specifications?

The main recorded details are 32 cores and 256 threads, up to 3.70 GHz turbo, a 390 W reference TDP, a 158,790 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.

Is the AMD EPYC 9B45 good for gaming?

The product name or CPU Mark alone cannot answer that. Check single-thread performance, core count, the target graphics card, gaming resolution and results from the games you play.

Which motherboards support the AMD EPYC 9B45?

Start with SP5 motherboards, then confirm the official CPU-support list and required BIOS revision for the exact board before buying.

How much power does the AMD EPYC 9B45 use?

The recorded reference TDP is 390 W. Real consumption can be lower or higher depending on power limits, motherboard, workload and cooling.

This guidance interprets recorded specifications and results; it does not claim hands-on device testing. Results can vary with motherboard, power, memory and cooling.

Multi-axis comparison

How does this processor compare?

A direct comparison with nearby processors from the same brand and a similar core count.

5 CPU

Overall and multi-core performance

A higher CPU Mark indicates stronger overall performance.

01AMD EPYC 9965AMD160,542 points
02AMD EPYC 9655PAMD160,432 points
03AMD EPYC 9B45This CPU158,790 points
04AMD EPYC 9655AMD156,110 points
05AMD EPYC 9845AMD152,985 points

Single-thread performance

Measures speed in tasks that depend on one CPU thread.

01AMD EPYC 9655PAMD3,849 points
02AMD EPYC 9655AMD3,847 points
03AMD EPYC 9B45This CPU3,540 points
04AMD EPYC 9965AMD3,176 points
05AMD EPYC 9845AMD3,144 points

Performance per watt

Estimated as CPU Mark divided by TDP.

01AMD EPYC 9B45This CPU407.2 Mark/W
02AMD EPYC 9655PAMD401.1 Mark/W
03AMD EPYC 9845AMD392.3 Mark/W
04AMD EPYC 9655AMD390.3 Mark/W
05AMD EPYC 9965AMD321.1 Mark/W

Bars are relative to the processors shown here, not a global ranking of every CPU.

Detailed benchmark results

Snapshot from 2026-10-20

Data CompressionKBytes/Sec
3,825,272.00
Data EncryptionMBytes/Sec
228,301.00
Extended InstructionsMillion Matrices/Sec
275,331.00
Find Prime NumbersMillion Primes/Sec
2,108.00
Floating Point MathMOps/Sec
854,461.00
Integer MathMOps/Sec
1,427,945.00
PhysicsFrames/Sec
21,500.00
Random String SortingThousand Strings/Sec
464,728.00

Core specifications

BrandAMD
CategoryServer
Release year2025
SocketSP5
Cores / threads32 / 256
Base clock2.10 GHz
Max turbo3.70 GHz
TDP390 W
Integrated graphics—

Memory support

—
Memory type—
Official speed—
Maximum capacity—

Cache hierarchy

L1I127 x 32 KB
L1D127 x 48 KB
L2127 x 1024 KB
L3512 MB