The Tool Desk
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What the available benchmark results actually measure
The clearest numerical comparison comes from the CPU-Z Validator performance table, labelled July 2026. It reports results for CPU-Z Benchmark x64 2017.1, but does not document an identically configured test system for these entries.
| Processor entry | CPU-Z single-thread | CPU-Z multi-thread | What the result establishes |
|---|---|---|---|
| Xeon Platinum P-8136 (56 threads) | 338 | 8,919 | One listed benchmark entry; the table does not establish a matched system comparison. |
| Xeon E5-2696 v4 (44 threads) | Not stated | 9,191 | The entry does not identify a dual-socket configuration, so it is not a result for two E5-2696 v4 processors. |
CPUID / CPU-Z Validator’s benchmark table therefore shows two listed CPU results, not one P-8136 versus a dual E5-2696 v4 system. Its multi-thread figures are relatively close, but comparing them cannot answer the title’s question without knowing the E5 system’s CPU count and matching the test conditions.
A separate P-8136 owner-reported result
In June 2019, AnandTech forum user “traderjay” reported a Cinebench R20 score of 9,600 for a P-8136 in a Supermicro X11SRL-F. The post describes four ECC DDR4-2166 memory sticks and says the system was not yet using six-channel memory mode. This is one owner’s report, not an independently reproduced test or a comparison with dual E5-2696 v4 processors. Read the AnandTech forum post.
#1 Best Overall
Why these numbers cannot settle “one 28-core vs. two 22-core”
The P-8136 is described in the 2019 forum thread as a 28-core processor. An E5-2696 v4 has 22 cores and 44 threads per CPU, so a dual-processor system has two processors; however, the CPU-Z entry above is not labelled as a dual system. Core counts alone also do not predict performance across applications: software scaling, memory behavior, clock and power settings, and system configuration all matter.
A fair test would run the same benchmark version and workload on both systems, with operating system, firmware, power limits, cooling, and memory population and speed recorded. It would also identify whether the E5 result uses one or two processors. For a practical decision, compare:
- Single-thread performance: relevant to tasks that rely on one or a few busy cores.
- Multi-thread performance in your workload: a general CPU benchmark may not predict performance in your particular server application.
- Memory capacity and bandwidth: record the memory configuration and speed, not just the CPU model.
- Power and cooling: the available results do not establish system power draw or a performance-per-watt winner.
- Platform cost and compatibility: include the board or server, memory, cooling, and the risk that an OEM processor will not work in the intended system.
No matched dual-socket benchmark, reliable power comparison, or current price comparison is established by these results. A comparison-index listing names the models and a dual-P-8136 pairing, but its pages were not available to verify methodology or figures; it should not be treated as independent benchmark evidence. GadgetVersus comparison listing and its alternate comparison listing.
What to verify before buying an OEM P-8136
The forum user described the P-8136 as an OEM or data-center-customized part. The thread reproduces seller notes claiming similarity to the retail 8176, a maximum supported memory speed of 2400MHz, and a B1 stepping microcode requirement. These are forum-post and seller-reported details, not an official, current Intel compatibility list; do not assume that “similar specifications” means drop-in compatibility.
- Identify the exact motherboard or server model and board revision.
- Check the system maker’s current CPU support guidance for the processor, required BIOS and microcode, and any stepping restrictions.
- Confirm that the installed memory type, capacity, population, and supported speed match that platform’s requirements.
- Ask the seller to confirm the exact CPU model and stepping, and review return terms before purchase.
The AnandTech thread reproduces seller-listed compatible and incompatible platforms, but those notes are not a substitute for checking the present guidance for your particular system. A cheap processor is not a useful upgrade if the board’s BIOS, firmware, or platform does not support it.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to reach a defensible verdict for your workload
If you are choosing between these configurations, seek results for the exact applications you run and insist that the test identifies the number of installed CPUs. For a dual-socket E5-2696 v4 result, the report should clearly say that both processors were installed and show the memory configuration. For either system, useful evidence includes the benchmark version, operating system, firmware, cooling, power settings, memory speed and population, and repeated runs under comparable conditions.
Rank #4
Until such a matched test is available, the evidence supports only narrower conclusions: the CPU-Z table lists a P-8136 result of 8,919 multi-thread and 338 single-thread, and an E5-2696 v4 result of 9,191 multi-thread without identifying it as dual-socket; the P-8136 also has a separate owner-reported Cinebench R20 score. None is a controlled one-versus-two comparison.
Quick Recap
Best Value
- L2 Cache Memory: Features 12 MB of L2 cache for improved processing efficiency and faster data access
- L3 Cache Memory: Equipped with 24.75 MB of L3 cache memory for enhanced performance and multitasking capabilities
- Processing Architecture: Supports 64-bit processing architecture for handling large amounts of memory and advanced computing tasks
- Maximum Turbo Frequency: Achieves up to 3.70 GHz overclocking speed for demanding computational workloads and applications
- Manufacturing Process: Built using advanced 14 nm lithography technology for optimal power efficiency and thermal performance
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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