Intel® Xeon™ Silver 4123

The Intel Xeon Silver 4123 is a server processor with 8 cores and 16 threads. It launched in 2018. Clocks run from 3.0 GHz base to 3.2 GHz boost. A 11-MB L3 cache backs the cores (1.9 MB per core). It uses the FCLGA3647 socket. Rated TDP is 105 W. Notable platform capabilities: AVX-512, Extended Page Tables (EPT).

The Intel Xeon Silver 4123 scores 1,967 in single-core performance and 14,405 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 5,323 for overall performance, 12,117 for productivity performance, 11,463 for creator performance, 14,765 for engineering performance and 9,502 for gaming performance. Its multi-core throughput works out to 1,801 per core, 900 per thread and 137 per watt. Its computed efficiency index is 520. Its performance index is 66, so its overall performance is 34% 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.

Workload sub-scores (integer math, floating point, compression, encryption, physics, SIMD, prime sieve and sorting) are not recorded for the Intel Xeon Silver 4123.

The Intel Xeon Silver 4123 has 8 physical cores and runs 16 logical threads. It does not use a hybrid performance and efficiency core layout. It runs 2 threads per core. It runs at a base clock of 3.00 GHz and boosts up to 3.20 GHz.

The Intel Xeon Silver 4123 is a server processor and belongs to the Intel Xeon Silver family. It launched in 2018.

The Intel Xeon Silver 4123 has 256 KB of L1 cache, 4 MB of L2 cache and 11 MB of L3 cache. That adds up to about 15.3 MB of cache, or 1.91 MB per core.

The Intel Xeon Silver 4123 has a 3-level cache hierarchy: L1 at 256 KB, L2 at 4 MB and L3 at 11 MB. L3 is the largest level and makes up about 72% of the cache listed here.

The Intel Xeon Silver 4123 uses the FCLGA3647 socket.

The Intel Xeon Silver 4123 has a rated TDP of 105 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.

Feex has recorded 40% of the specifications it tracks for the Intel Xeon Silver 4123. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, All-Core Boost and Unlocked Multiplier. Architecture & Generation: Codename, ISA Family and Market Status. Cache: L2 Cache (per Core) and L4 Cache. Memory Support: Max Memory, Memory Channels, Memory Bandwidth, Memory Types, DDR5 Support, DDR4 Support, LPDDR Support, ECC Memory and Max Memory Speed. Graphics: Integrated Graphics, Graphics Model, Graphics Base Clock, Graphics Max Clock, Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Package, Package Size and PCIe Lanes. 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, Foundry and Launch Price. Naming & Aliases: SKU, Model Number, Processor Number and Part Number.

Processors that use the same FCLGA3647 socket as the Intel Xeon Silver 4123 and have the closest multi-core scores in the Feex database include Intel Xeon Silver 4215R, Intel Xeon Silver 4116, Intel Xeon Gold 5217, Intel Xeon Silver 4210R and Intel Xeon Gold 5115.