Intel® Xeon™ E3-1220 v6

The Intel Xeon E3-1220 v6 is a server processor with 4 cores and 4 threads, built on the Kaby Lake (Server) architecture (14 nm process). It launched in 2017. Clocks run from 3.0 GHz base to 3.5 GHz boost. A 8-MB L3 cache backs the cores (2.3 MB per core). It addresses DDR4 memory up to 64 GB across 2 channels. The chip drops into the FCLGA1151 socket and exposes PCIe 3.0 (16 lanes). Rated TDP is 72 W. Notable platform capabilities: Extended Page Tables (EPT), AES-NI.

The Intel Xeon E3-1220 v6 scores 1,929 in single-core performance and 5,626 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 3,294 for overall performance, 6,358 for productivity performance, 6,567 for creator performance, 5,415 for engineering performance and 7,194 for gaming performance. Its multi-core throughput works out to 1,407 per core, 1,407 per thread and 78 per watt. Its computed efficiency index is 388. Its performance index is 41, so its overall performance is 59% 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 E3-1220 v6 scores 14,531 in integer math, 12,578 in floating-point math, 74,024 in compression, 1,713 in cryptography, 480 in physics simulation, 6,360 in vector SIMD, 33 in the prime sieve and 9,035 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 75% below in integer math, 73% below in floating-point math, 68% below in compression, 85% below in cryptography, 56% below in physics simulation, 59% below in vector SIMD, 51% below in the prime sieve and 60% 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 E3-1220 v6 has 4 physical cores and runs 4 logical threads. It does not use a hybrid performance and efficiency core layout. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 3.00 GHz and boosts up to 3.50 GHz.

The Intel Xeon E3-1220 v6 is a server processor, belongs to the Intel Xeon E3 family, uses the Kaby Lake (Server) architecture, carries the codename Kaby Lake and is manufactured on a 14 nm process. It launched in 2017.

The Intel Xeon E3-1220 v6 has 256 KB of L1 cache, 1 MB of L2 cache and 8 MB of L3 cache. That adds up to about 9.3 MB of cache, or 2.31 MB per core. Each core has 256 KB of private L2 cache.

The Intel Xeon E3-1220 v6 has a 3-level cache hierarchy: L1 at 256 KB, L2 at 1 MB and L3 at 8 MB. L3 is the largest level and makes up about 86% of the cache listed here.

The Intel Xeon E3-1220 v6 supports DDR4 memory, addresses up to 64 GB of memory, uses 2 memory channels and delivers up to 37.5 GB/s of memory bandwidth. It does not support DDR5 and LPDDR memory. It supports ECC memory.

The Intel Xeon E3-1220 v6 does not include integrated graphics, so a discrete graphics card is required for display output.

The Intel Xeon E3-1220 v6 uses the FCLGA1151 socket, supports PCI Express 3.0 and provides up to 16 PCIe lanes.

The Intel Xeon E3-1220 v6 has a rated TDP of 72 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 E3-1220 v6 contains about 1.75 billion transistors, has a die area of 126 mm², is built from 1 die and is manufactured by Intel. It launched at a price of $193.

The Intel Xeon E3-1220 v6 is also identified by the model number E3-1220V6 and the processor number E3-1220V6.

After an audit, 1 value was corrected on the Intel Xeon E3-1220 v6 record. Each change is listed with its old value, new value, rule and sources.

• PassMark benchmark row: 4 values re-read (PassMark multi-thread rating 7,767 → 5,626; PassMark single-thread rating 1,928 → 1,929; PassMark source URL https://www.cpubenchmark.net/cpu.php?cpu=Intel+Xeon+E3-1220+v6 → https://www.cpubenchmark.net/cpu.php?cpu=Intel+Xeon+E3-1220+v6+%40+3.00GHz&id=3131; Snapshot date 2026-07-24 → 2026-09-30). Rule: Benchmark row re-read from the exact PassMark page. source_url has no id= and CPU Mark 7767 is 38% off the list (5626); values from id page 3131. Sources: Vendor page (intel.com); PassMark: Intel Xeon E3-1220 v6 @ 3.00GHz; Wikipedia: List of Intel Xeon processors (Kaby Lake-based) (revision 1362915881).

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

Feex has recorded 71% of the specifications it tracks for the Intel Xeon E3-1220 v6. 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: ISA Family and Market Status. Cache: L4 Cache. Memory Support: 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: Foundry. Naming & Aliases: SKU and Part Number.

Processors that use the same FCLGA1151 socket as the Intel Xeon E3-1220 v6 and have the closest multi-core scores in the Feex database include Intel Core i3-9100T, Intel Core i5-6500, Intel Core i5-6600T, Intel Xeon E3-1205 v6 and Intel Xeon E3-1220 v5.