AMD® EPYC™ 9B45
The AMD EPYC 9B45 is a server processor released in 2025. It has 128 cores and 256 threads.
Best for
Overview
SummaryThe AMD EPYC 9B45 is a server processor with 128 cores and 256 threads. It launched in 2025.
Performance
10 metricsThe AMD EPYC 9B45 scores 3,540 in single-core performance and 158,790 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 23,709 for overall performance, 108,170 for productivity performance, 93,707 for creator performance, 222,306 for engineering performance and 50,318 for gaming performance. Its multi-core throughput works out to 1,241 per core and 620 per thread. Its performance index is 294, so its overall performance is 194% above the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.
Workload sub-scores (integer math, floating point, compression, encryption, physics, SIMD, prime sieve and sorting) are not recorded for the AMD EPYC 9B45.
How these scores are computed
Single-core and multi-core performance are PassMark CPU Mark single-thread and multi-thread ratings. Every other figure on this page's performance section is computed by Feex from those two ratings plus core count, thread count and TDP, so it is a derived value and not a separate benchmark run.
- Overall performance is the geometric mean of the two ratings: the square root of single-core times multi-core.
- Productivity performance is 0.65 times multi-core plus 1.4 times single-core.
- Creator performance is 0.55 times multi-core plus 1.8 times single-core.
- Engineering performance is multi-core times the smaller of 1.4 and (0.9 plus cores divided by 64).
- Gaming performance is 3 times single-core plus 0.25 times multi-core.
- Performance per core, per thread and per watt divide the multi-core rating by physical cores, logical threads and TDP in watts.
- The efficiency index is the square root of single-core times multi-core, divided by the square root of TDP.
- The performance index is overall performance divided by the overall performance of the Intel Core i5-12400 (8,069), times 100.
Core Configuration
3 specsThe AMD EPYC 9B45 has 128 physical cores and runs 256 logical threads. It runs 2 threads per core.
Architecture & Generation
5 specsThe AMD EPYC 9B45 is a server processor and belongs to the AMD EPYC family. It launched in 2025.
Graphics
1 specThe AMD EPYC 9B45 does not include integrated graphics, so a discrete graphics card is required for display output.
Platform Capabilities
1 supported, 0 not supportedInstruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.
Instruction Sets
0 supportedSecurity and Reliability
0 supportedVirtualization
0 supportedOS Compatibility
1 supportedFeex has no record for AES-NI, AVX-512, AVX2, AVX, AVX-VNNI and CET, which is different from being unsupported.
Feex has no record for AMD SEV, AMD SME, Control-flow Enforcement (CET), Execute Disable (NX), Memory Encryption and SMAP, which is different from being unsupported.
Feex has no record for AMD SVM, AMD-V (Hardware Virtualization), NPT / RVI, IOMMU and Second-Level Address Translation, which is different from being unsupported.
Feex records the AMD EPYC 9B45 as Windows 11 eligible.
Naming & Aliases
3 specsReal-world compute in the Feex fleet
No machines yetNo Feex fleet machines with the AMD EPYC 9B45 have reported compute telemetry yet, so real-world compute for this processor is not recorded.
Data Coverage
24% recordedFeex has recorded 24% of the specifications it tracks for the AMD EPYC 9B45. Values Feex does not hold are shown as "Not recorded" rather than estimated.
Not recorded: Core Configuration: Performance Cores, Efficiency Cores, Hybrid Architecture, All-Core Boost and Unlocked Multiplier. Architecture & Generation: Codename, ISA Family and Market Status. Cache: L1 Cache (Total), L2 Cache (Total), L2 Cache (per Core), L3 Cache, L4 Cache and Cache per Core. Memory Support: Max Memory, Memory Channels, Memory Bandwidth, Memory Types, DDR5 Support, DDR4 Support, LPDDR Support, ECC Memory and Max Memory Speed. Platform & Compatibility: Socket, Package, Package Size, PCIe Generation and PCIe Lanes. Power & Thermals: TDP, Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count, Foundry and Launch Price. Naming & Aliases: SKU, Model Number, Processor Number and Part Number.
Common questions
5 answeredHow many cores and threads does the AMD EPYC 9B45 have?
The AMD EPYC 9B45 has 128 cores and 256 threads.
Does the AMD EPYC 9B45 have integrated graphics?
No. The AMD EPYC 9B45 does not include integrated graphics.
How does the AMD EPYC 9B45 perform?
In the Feex normalized performance dataset, the AMD EPYC 9B45 scores 158,790 multi-core and 3,540 single-core.
What is the AMD EPYC 9B45 best for?
Based on its specifications, the AMD EPYC 9B45 is well suited for Workstation & rendering workloads, Heavy parallel simulation & compilation, High-FPS gaming & low-latency tasks, Server / professional infrastructure.
How does the AMD EPYC 9B45 compare with the Intel Core i5-12400?
The AMD EPYC 9B45 has a computed performance index of 294, which is 194% above the Intel Core i5-12400 (index 100). The index is derived from the single-core and multi-core ratings.