Intel® Core™ i9-9820X X-series

The Intel Core i9-9820X X-series is a desktop processor with 10 cores and 20 threads, built on the Skylake architecture. It launched in Oct 2018. Clocks run from 3.3 GHz base to 4.1 GHz boost. A 16.5-MB L3 cache backs the cores (2.7 MB per core). It addresses DDR4 memory up to 128 GB across 4 channels. The chip drops into the FCLGA2066 socket and exposes PCIe 3.0 (44 lanes). Rated TDP is 165 W. Notable platform capabilities: AVX-512, Extended Page Tables (EPT).

The Intel Core i9-9820X X-series scores 2,456 in single-core performance and 20,565 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 7,107 for overall performance, 16,806 for productivity performance, 15,732 for creator performance, 21,722 for engineering performance and 12,509 for gaming performance. Its multi-core throughput works out to 2,057 per core, 1,028 per thread and 125 per watt. Its computed efficiency index is 553. Its performance index is 88, so its overall performance is 12% below 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.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the Intel Core i9-9820X X-series scores 71,656 in integer math, 44,590 in floating-point math, 315,278 in compression, 7,532 in cryptography, 1,259 in physics simulation, 25,128 in vector SIMD, 78 in the prime sieve and 38,753 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 22% above in integer math, 3% below in floating-point math, 38% above in compression, 34% below in cryptography, 16% above in physics simulation, 62% above in vector SIMD, 16% above in the prime sieve and 71% above in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The Intel Core i9-9820X X-series has 10 physical cores and runs 20 logical threads. It runs 2 threads per core. It runs at a base clock of 3.30 GHz and boosts up to 4.10 GHz.

The Intel Core i9-9820X X-series is a desktop processor, belongs to the Intel Core i9 family, uses the Skylake architecture, carries the codename Skylake and is manufactured on a 14 nm process. It launched in Oct 2018.

The Intel Core i9-9820X X-series has 640 KB of L1 cache, 10 MB of L2 cache and 16.5 MB of L3 cache. That adds up to about 27.1 MB of cache, or 2.71 MB per core. Each core has 1 MB of private L2 cache.

The Intel Core i9-9820X X-series has a 3-level cache hierarchy: L1 at 640 KB, L2 at 10 MB and L3 at 16.5 MB. L3 is the largest level and makes up about 61% of the cache listed here.

The Intel Core i9-9820X X-series supports DDR4 memory, addresses up to 128 GB of memory and uses 4 memory channels. It does not support DDR5 and LPDDR memory.

The Intel Core i9-9820X X-series does not include integrated graphics, so a discrete graphics card is required for display output.

The Intel Core i9-9820X X-series uses the FCLGA2066 socket, supports PCI Express 3.0 and provides up to 44 PCIe lanes.

The Intel Core i9-9820X X-series has a rated TDP of 165 W.

Instruction 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.

The Intel Core i9-9820X X-series is manufactured by Intel. It launched at a price of $889.

The Intel Core i9-9820X X-series is also identified by the model number i9-9820X.

After an audit, 1 value was corrected on the Intel Core i9-9820X X-series record. Each change is listed with its old value, new value, rule and sources.

• Integrated graphics: Yes → No. Rule: Cleanup hedt no igpu. LGA2011/LGA2011-3/LGA2066 Core desktop part: Intel ARK lists no Processor Graphics; value came from architecture inference.

The audit log is public: all changes for this CPU, the corrections overview and the method.

Feex has recorded 56% of the specifications it tracks for the Intel Core i9-9820X X-series. 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: ISA Family and Market Status. Cache: L4 Cache. Memory Support: Memory Bandwidth, ECC Memory and Max Memory Speed. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count and Foundry. Naming & Aliases: Normalized Name, SKU, Processor Number and Part Number.

Processors that use the same FCLGA2066 socket as the Intel Core i9-9820X X-series and have the closest multi-core scores in the Feex database include Intel Xeon W-2155, Intel Xeon W-2150B, Intel Core i9-7900X X-series, Intel Core i9-9900X X-series and Intel Xeon W-2245.