AMD EPYC 9825
Expert rating9 / 10
- Brand:
- AMD
- Form Factor:
- Server & Enthusiast
- CPU Socket:
- SP5
- Core/Thread Count:
- 128C/256T
- TDP:
- 400W
- iGPU:
- None
- CPU Series:
- EPYC
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Manufacturer: AMD Last updated: 2026-09-11
AMD EPYC 9825 Review
AMD EPYC 9825 128-core 256-thread SP5 server processor, 2.5GHz base / 3.8GHz boost, 400W TDP, 384MB L3 cache, Zen 5c "Turin Dense"
The EPYC 9825 is a cloud-optimized 128-core dense Zen 5c server processor tuned specifically for hyperscale and cloud-provider deployments rather than general enterprise use. It pairs 128 cores and 256 threads with a 2.5GHz base clock that boosts to 3.8GHz, backed by 384MB of L3 cache on AMD's SP5 platform.
Core Count and Workload Fit
With 128 dense Zen 5c cores and 256 threads, the EPYC 9825 is a cloud-optimized SKU: its binning and firmware tuning target sustained, consistent throughput across many VMs rather than peak single-thread boost, which is why its boost clock trails the general-purpose EPYC 9745 despite sharing a core count. It suits hyperscale operators running highly consistent, predictable workloads across huge fleets.
Platform, Memory, and Cooling
The EPYC 9825 runs on AMD's SP5 platform with 12-channel DDR5 memory support and up to 128 PCIe 5.0 lanes per socket. It supports both single-socket (1P) and dual-socket (2P) deployments. At 400W, it needs the same server-grade cooling infrastructure as AMD's other high-core-count SKUs.
Comparison to Alternatives
Compared to the general-purpose EPYC 9745 in this catalog at the same core count and TDP, the EPYC 9825 trades some boost clock headroom for cloud-provider-specific binning and consistency guarantees, typically sold through hyperscale supply channels rather than general enterprise distribution. Against the EPYC 9755 in this catalog, it runs 100W cooler at the cost of both clock speed and core design. It is a narrower recommendation than AMD's mainstream 128-core SKUs, best suited to operators who specifically need cloud-tier binning.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating9 / 10
The EPYC 9825 is a specialized, cloud-provider-oriented 128-core SKU best reserved for hyperscale operators rather than general enterprise buyers.
Best for
- Hyperscale cloud provider fleets
- Consistent-throughput VM hosting at scale
- Cloud-tier procurement channels
Not for
- General enterprise deployments
- Peak single-thread workloads
- Smaller-scale server rooms
Specifications
What these specs meanCores and threads
| Core Count | 128 cores |
|---|---|
| Thread Count | 256 threads |
| Core Architecture | Zen 5c "Turin Dense" |
Clocks
| Base Clock | 2.5 GHz |
|---|---|
| Boost Clock | 3.8 GHz |
Cache
| L3 Cache | 384 MB |
|---|
Platform
| Socket | SP5 |
|---|---|
| Multi-Socket Support | 1P/2P |
Memory
| Memory Channels | 12 channels |
|---|---|
| ECC Support | Yes |
Power and thermals
| TDP | 400 W |
|---|
Measured results
SPEC CPU 2017
Best published result on spec.org as of 23 Sept 2026.
| SPECrate® 2017 Integer (base) | 1,370 |
Cores 144 · Tested in ASUS RS520QA-E13-RS8U (2.20 GHz, AMD EPYC 9825) · Published by ASUSTeK Computer Inc., Dec-2025
Full disclosure on spec.org| SPECrate® 2017 Floating Point (base) | 1,150 |
Cores 144 · Tested in ASUS RS520QA-E13-RS8U (2.20 GHz, AMD EPYC 9825) · Published by ASUSTeK Computer Inc., Dec-2025
Full disclosure on spec.org| SPECrate® 2017 Integer (base) | 2,660 |
Cores 288 · Tested in ASUS RS720A-E13-RS8U (2.20 GHz, AMD EPYC 9825) · Published by ASUSTeK Computer Inc., Jun-2025
Full disclosure on spec.org| SPECrate® 2017 Floating Point (base) | 2,250 |
Cores 288 · Tested in ASUS RS720A-E13-RS8U (2.20 GHz, AMD EPYC 9825) · Published by ASUSTeK Computer Inc., Jun-2025
Full disclosure on spec.orgSPEC®, SPECrate® and SPECspeed® are registered trademarks of the Standard Performance Evaluation Corporation. Copied by permission of the Standard Performance Evaluation Corporation (SPEC). Results retrieved from www.spec.org on 23 Sept 2026.
FAQs
What are the key specifications of the AMD EPYC 9825?
The AMD EPYC 9825 has 128 cores and 256 threads, a 2.5 GHz base and 3.8 GHz boost clock, 384 MB of L3 cache and a 400 W TDP. Socket: SP5.
Will the AMD EPYC 9825 work with my current setup?
The AMD EPYC 9825 lists Socket is SP5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the AMD EPYC 9825 best suited to?
Best suited to: Hyperscale cloud provider fleets; Consistent-throughput VM hosting at scale; Cloud-tier procurement channels.
What are the drawbacks of the AMD EPYC 9825?
Not the best fit for: General enterprise deployments; Peak single-thread workloads; Smaller-scale server rooms.