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AMD 9755 QS (Part 100‑000001535‑05): 128‑Core EPYC Engineering Sample on Zen 5 Turin
KeywordsAMD EPYC 9755 QS, AMD 9755 QS, EPYC engineering sample, 128‑core server CPU, SP5 socket processor, Turin XS CPU, high core‑count CPU, Zen 5 EPYC chip, AMD 9755 sample, 5th Gen EPYC QS
AMD EPYC 9755 QS, 128‑core server CPU, Zen 5 EPYC chip
DescriptionThe AMD EPYC 9755 QS, identified by part number 100‑000001535‑05, is a rare **engineering sample** of AMD’s highly anticipated **5th generation “Turin” EPYC processor**. As a **qualification sample (QS)**, it's used for internal validation and testing, and is not a retail or OEM production unit.
This chip reportedly features a staggering **128 cores and 256 threads**, powered by the **Zen 5 architecture**, built on TSMC’s 4nm process. Designed for the **SP5 socket**, it represents the architecture that underpins the upcoming EPYC 9755 CPU series.
Early listings suggest base/boost clock speeds around **2.5 GHz base** and **~4.05 GHz boost**, though official specs for production EPYC 9755 models commonly land at **2.7 GHz base** and **4.1 GHz boost**, paired with a substantial **512 MB L3 cache**. The QS variant may differ slightly in clock speeds, reflecting its prototype nature.
This EPYC 9755 QS engineering sample provides a glimpse into AMD's push for extreme compute density, paving the way for ultra-high core count CPUs in cloud, HPC, and AI settings.
Key Features- Engineering Sample (QS) of AMD EPYC 9755, featuring prototype silicon
- 128 cores and 256 threads in a single-socket SP5-compatible package
- Zen 5 microarchitecture (“Turin”) built on advanced 4nm process
- Quoted sample clock speeds around 2.5 GHz base, ~4.05 GHz boost
- Represents leading-edge density for upcoming 5th generation EPYC CPUs
| Specification | Details |
|---|---|
| Part Number | 100‑000001535‑05 (QS Engineering Sample) |
| Core / Thread Count | 128 cores / 256 threads |
| Architecture | Zen 5 (“Turin” – EPYC 9005 series) |
| Clock Speeds (Sample) | Approx. 2.5 GHz base / ~4.05 GHz boost |
| Socket | SP5 |
| Purpose | Engineering sample for validation / testing |
This CPU engineering sample is designed for server motherboards with the **SP5 socket**, including validation platforms used by OEMs and datacenter developers. Compatibility and support for production systems may be limited and dependent on BIOS/firmware readiness.
Usage Scenarios
Primarily used for platform validation, performance tuning, and early firmware development by server OEMs and infrastructure teams.
Serves as a preview of the full release EPYC 9755, allowing performance benchmarking, thermal analysis, and kindred system readiness ahead of general availability.
Not intended for production deployment—ideal for labs or engineering environments exploring future ultra-dense core CPU capabilities.
Frequently Asked QuestionsQ1: What does “QS” mean in AMD 9755 QS?
“QS” stands for Qualification Sample—an internal engineering prototype used for early testing and validation, not a final retail unit.
Q2: How does the sample differ from the production EPYC 9755?**
Specs may differ in boost clocks and firmware support. Production models like EPYC 9755 (PN 100‑000001443) typically run at 2.7 GHz base and 4.1 GHz boost with known cache and power specs.
Q3: Is this CPU suitable for regular server use?**
No—it's not recommended for production deployments. QS units may lack full validation, firmware support, or power/thermal documentation required for stable operation.
Q4: Where can I find official details on the final EPYC 9755?**
Refer to AMD’s official processor specifications page for EPYC 9755 in the EPYC 9005 series for complete production specs and supported features.
