Intel® Xeon™ E5-2643 v4

The Intel Xeon E5-2643 v4 is a server processor with 6 cores and 12 threads, built on the Broadwell architecture. It launched in Jan 2016. Clocks run from 3.4 GHz base to 3.7 GHz boost. A 20-MB L3 cache backs the cores (3.6 MB per core). It addresses DDR4 memory up to 1536 GB across 4 channels. The chip drops into the FCLGA2011 socket and exposes PCIe 3.0 (40 lanes). Rated TDP is 135 W. Notable platform capabilities: Extended Page Tables (EPT).

The Intel Xeon E5-2643 v4 scores 2,275 in single-core performance and 11,111 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 5,028 for overall performance, 10,407 for productivity performance, 10,206 for creator performance, 11,042 for engineering performance and 9,603 for gaming performance. Its multi-core throughput works out to 1,852 per core, 926 per thread and 82 per watt. Its computed efficiency index is 433. Its performance index is 62, so its overall performance is 38% 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 Xeon E5-2643 v4 scores 37,883 in integer math, 24,674 in floating-point math, 166,185 in compression, 3,134 in cryptography, 810 in physics simulation, 10,616 in vector SIMD, 56 in the prime sieve and 20,298 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 36% below in integer math, 46% below in floating-point math, 27% below in compression, 73% below in cryptography, 26% below in physics simulation, 32% below in vector SIMD, 16% below in the prime sieve and 10% below 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 E5-2643 v4 has 6 physical cores and runs 12 logical threads. It runs 2 threads per core. It runs at a base clock of 3.40 GHz and boosts up to 3.70 GHz.

The Intel Xeon E5-2643 v4 is a server processor, belongs to the Intel Xeon E5 family, uses the Broadwell architecture, carries the codename Broadwell and is manufactured on a 14 nm process. It launched in Jan 2016.

The Intel Xeon E5-2643 v4 has 384 KB of L1 cache, 1.50 MB of L2 cache and 20 MB of L3 cache. That adds up to about 21.9 MB of cache, or 3.65 MB per core. Each core has 256 KB of private L2 cache.

The Intel Xeon E5-2643 v4 has a 3-level cache hierarchy: L1 at 384 KB, L2 at 1.5 MB and L3 at 20 MB. L3 is the largest level and makes up about 91% of the cache listed here.

The Intel Xeon E5-2643 v4 supports DDR4 memory, addresses up to 1,536 GB of memory, uses 4 memory channels, runs memory at up to 2,400 MT/s and delivers up to 76.8 GB/s of memory bandwidth. It does not support DDR5 and LPDDR memory.

The Intel Xeon E5-2643 v4 uses the FCLGA2011 socket, supports PCI Express 3.0 and provides up to 40 PCIe lanes.

The Intel Xeon E5-2643 v4 has a rated TDP of 135 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 E5-2643 v4 is manufactured by Intel. It launched at a price of $1,552.

The Intel Xeon E5-2643 v4 is also identified by the model number E5-2643V4.

Feex has recorded 58% of the specifications it tracks for the Intel Xeon E5-2643 v4. 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: ECC Memory. Graphics: Integrated Graphics, Graphics Model, Graphics Base Clock, Graphics Max Clock, Execution Units, Display Outputs and Max Video Memory. 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 FCLGA2011 socket as the Intel Xeon E5-2643 v4 and have the closest multi-core scores in the Feex database include Intel Xeon E5-2628L v4, Intel Xeon E5-2640 v3, Intel Xeon E5-4650 v2, Intel Xeon E5-2670 v2 and Intel Xeon E5-1650 v4.