Intel® Xeon™ Gold 6423N

The Intel Xeon Gold 6423N is a server processor with 28 cores and 56 threads, built on the Sapphire Rapids architecture. It launched in Jul 2023. Clocks run from 2.0 GHz base to 3.6 GHz boost. A 52.5-MB L3 cache backs the cores (1.9 MB per core). It addresses DDR5 memory up to 4 GB across 8 channels. The chip drops into the FCLGA4677 socket and exposes PCIe 4.0 (64 lanes). Rated TDP is 195 W. Notable platform capabilities: AMX (Advanced Matrix Extensions), AMX, AVX-512, Extended Page Tables (EPT).

The Intel Xeon Gold 6423N scores 2,998 in single-core performance and 57,434 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 13,122 for overall performance, 41,529 for productivity performance, 36,985 for creator performance, 76,818 for engineering performance and 23,353 for gaming performance. Its multi-core throughput works out to 2,051 per core, 1,026 per thread and 295 per watt. Its computed efficiency index is 940. Its performance index is 163, so its overall performance is 63% 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.

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 Xeon Gold 6423N scores 199,765 in integer math, 144,719 in floating-point math, 774,170 in compression, 44,825 in cryptography, 7,865 in physics simulation, 54,284 in vector SIMD, 275 in the prime sieve and 100,054 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 239% above in integer math, 215% above in floating-point math, 239% above in compression, 290% above in cryptography, 622% above in physics simulation, 250% above in vector SIMD, 310% above in the prime sieve and 342% 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 Xeon Gold 6423N has 28 physical cores and runs 56 logical threads. It runs 2 threads per core. It runs at a base clock of 2.00 GHz and boosts up to 3.60 GHz.

The Intel Xeon Gold 6423N is a server processor, belongs to the Intel Xeon Gold family, uses the Sapphire Rapids architecture and carries the codename Sapphire Rapids Edge Enhanced. It launched in Jul 2023.

The Intel Xeon Gold 6423N has 52.5 MB of L3 cache. That adds up to about 52.5 MB of cache, or 1.88 MB per core. Feex has no recorded L1 cache size for this processor.

The Intel Xeon Gold 6423N supports DDR5 memory, addresses up to 4 GB of memory and uses 8 memory channels. It does not support DDR4 and LPDDR memory.

The Intel Xeon Gold 6423N does not include integrated graphics, so a discrete graphics card is required for display output.

The Intel Xeon Gold 6423N uses the FCLGA4677 socket, supports PCI Express 4.0 and provides up to 64 PCIe lanes.

The Intel Xeon Gold 6423N has a rated TDP of 195 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 Xeon Gold 6423N is manufactured by Intel. It launched at a price of $2,420.

The Intel Xeon Gold 6423N is also identified by the model number 6423N.

After an audit, 1 value was corrected on the Intel Xeon Gold 6423N record. Each change is listed with its old value, new value, rule and sources.

• PCIe revision: 4 → 4.0. Rule: Cleanup pcie int to decimal. normalize to the dominant "N.0" format.

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

Feex has recorded 51% of the specifications it tracks for the Intel Xeon Gold 6423N. 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: L1 Cache (Total), L2 Cache (Total), L2 Cache (per Core) and 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 FCLGA4677 socket as the Intel Xeon Gold 6423N and have the closest multi-core scores in the Feex database include Intel Xeon w7-2495X, Intel Xeon Gold 6414U, Intel Xeon Gold 5420+, Intel Xeon Gold 6442Y and Intel Xeon Gold 6421N.