Intel® Xeon™ Bronze 3408U

The Intel Xeon Bronze 3408U is a server processor with 8 cores and 8 threads, built on the Sapphire Rapids architecture. It launched in Jan 2023. Clocks run from 1.8 GHz base to 1.9 GHz boost. A 22.5-MB L3 cache backs the cores (4.9 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 (80 lanes). Rated TDP is 125 W. Notable platform capabilities: AVX-512, Extended Page Tables (EPT), Control-flow Enforcement (CET).

The Intel Xeon Bronze 3408U scores 1,516 in single-core performance and 9,969 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 3,888 for overall performance, 8,602 for productivity performance, 8,212 for creator performance, 10,218 for engineering performance and 7,040 for gaming performance. Its multi-core throughput works out to 1,246 per core, 1,246 per thread and 80 per watt. Its computed efficiency index is 348. Its performance index is 48, so its overall performance is 52% 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 Bronze 3408U scores 22,803 in integer math, 29,142 in floating-point math, 95,714 in compression, 5,274 in cryptography, 1,114 in physics simulation, 10,387 in vector SIMD, 119 in the prime sieve and 12,073 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 61% below in integer math, 37% below in floating-point math, 58% below in compression, 54% below in cryptography, 2% above in physics simulation, 33% below in vector SIMD, 78% above in the prime sieve and 47% 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 Bronze 3408U has 8 physical cores and runs 8 logical threads. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 1.80 GHz and boosts up to 1.90 GHz.

The Intel Xeon Bronze 3408U is a server processor, belongs to the Intel Xeon Bronze family, uses the Sapphire Rapids architecture and carries the codename Sapphire Rapids. It launched in Jan 2023.

The Intel Xeon Bronze 3408U has 640 KB of L1 cache, 16 MB of L2 cache and 22.5 MB of L3 cache. That adds up to about 39.1 MB of cache, or 4.89 MB per core. Each core has 2 MB of private L2 cache.

The Intel Xeon Bronze 3408U has a 3-level cache hierarchy: L1 at 640 KB, L2 at 16 MB and L3 at 22.5 MB. L3 is the largest level and makes up about 58% of the cache listed here.

The Intel Xeon Bronze 3408U 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 Bronze 3408U does not include integrated graphics, so a discrete graphics card is required for display output.

The Intel Xeon Bronze 3408U uses the FCLGA4677 socket, supports PCI Express 4.0 and provides up to 80 PCIe lanes.

The Intel Xeon Bronze 3408U has a rated TDP of 125 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 Bronze 3408U is manufactured by Intel. It launched at a price of $498.

The Intel Xeon Bronze 3408U is also identified by the model number 3408U.

Feex has recorded 55% of the specifications it tracks for the Intel Xeon Bronze 3408U. 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: 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 Bronze 3408U and have the closest multi-core scores in the Feex database include Intel Xeon Bronze 3508U, Intel Xeon w3-2423, Intel Xeon Silver 4509Y, Intel Xeon w3-2425 and Intel Xeon Gold 5415+.