Intel® Xeon™ E5-1681 v3

The Intel Xeon E5-1681 v3 is a server processor with 10 cores and 20 threads, built on the Haswell architecture. It launched in Sep 2014. Clocks run from 2.9 GHz base to 3.5 GHz boost. A 25-MB L3 cache backs the cores (2.8 MB per core). It supports DDR4 memory. It uses the FCLGA2011-3 socket. Rated TDP is 135 W.

The Intel Xeon E5-1681 v3 scores 2,040 in single-core performance and 14,820 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 5,498 for overall performance, 12,489 for productivity performance, 11,823 for creator performance, 15,654 for engineering performance and 9,825 for gaming performance. Its multi-core throughput works out to 1,482 per core, 741 per thread and 110 per watt. Its computed efficiency index is 473. Its performance index is 68, so its overall performance is 32% 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 E5-1681 v3.

The Intel Xeon E5-1681 v3 has 10 physical cores and runs 20 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 2.90 GHz and boosts up to 3.50 GHz.

The Intel Xeon E5-1681 v3 is a server processor, belongs to the Intel Xeon E5 family and uses the Haswell architecture. It launched in Sep 2014.

The Intel Xeon E5-1681 v3 has 640 KB of L1 cache, 2.50 MB of L2 cache and 25 MB of L3 cache. That adds up to about 28.1 MB of cache, or 2.81 MB per core. Each core has 256 KB of private L2 cache.

The Intel Xeon E5-1681 v3 has a 3-level cache hierarchy: L1 at 640 KB, L2 at 2.5 MB and L3 at 25 MB. L3 is the largest level and makes up about 89% of the cache listed here.

The Intel Xeon E5-1681 v3 supports DDR4 memory and runs memory at up to 2,133 MT/s. It does not support DDR5 and LPDDR memory.

The Intel Xeon E5-1681 v3 uses the FCLGA2011-3 socket.

The Intel Xeon E5-1681 v3 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.

Feex has recorded 49% of the specifications it tracks for the Intel Xeon E5-1681 v3. 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: L4 Cache. Memory Support: Memory Channels, Memory Bandwidth and ECC Memory. 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 FCLGA2011-3 socket as the Intel Xeon E5-1681 v3 and have the closest multi-core scores in the Feex database include Intel Xeon E5-2678 v3, Intel Xeon E5-2666 v3, Intel Xeon E5-2673 v3, Intel Xeon E5-2669 v3 and Intel Xeon E5-2698B v3.