Intel Xeon E3-1280 v5

The Intel Xeon E3-1280 v5 is an end-of-life 4-core (8-thread) processor built for the server CPU market. It launched in Q4 2015 with a suggested retail price of $612. It is part of Intel's Xeon E3 lineup, which is based on the Skylake-DT microarchitecture. The E3-1280 v5 is compatible with Intel Socket 1151 motherboards and is fabricated on Intel's 14 nm manufacturing process.

Memory and Cache

The Xeon E3-1280 v5 supports DDR4 memory and features a dual-channel memory controller, allowing it to utilize 2 memory modules simultaneously. In terms of cache, the Xeon E3-1280 v5 has multiple levels of cache. Its L1 cache, which is the smallest and fastest, is 64 KB in size, providing rapid access to crucial instructions. Its L2 cache, at 256 KB, is larger but slower than the L1. Its L3 cache, a shared resource among the CPU's cores, has a capacity of 8 MB.

Cores and Clock Speeds

The Xeon E3-1280 v5 features 4 total cores which can process 8 threads simultaneously. The multi-threading capability allows the CPU to execute multiple computational tasks in parallel. The base clock speed of the CPU is 3.7 GHz, and it can boost up to 4.0 GHz under heavy workloads. Higher clock speeds result in better performance for the same microarchitecture. The multiplier is locked, making it incapable of overclocking for pushing performance further.

Integrated Graphics

The Xeon E3-1280 v5 does not include an integrated graphics solution. A dedicated graphics card will be required if you require a monitor with your computer.

Benchmark Performance & Value

The Xeon E3-1280 v5 has the 237th best 3DMark 11 Performance Physics score among the 721 benchmarked CPUs in our database. It achieves 28.41% of the performance of the best benchmarked CPU, the AMD Ryzen 9 7950X3D. Its 10,510 score and $612 launch price (MSRP) gives it a performance per dollar of 17.17. This is the 170th best in value for the 3DMark 11 Perf. Physics benchmark.