Intel 5th Gen Xeon Performance Benchmarks: Impressive Efficiency Gains With "Optimized Power Mode"

Written by Michael Larabel in Processors on 18 December 2023 at 10:00 AM EST. Page 3 of 6. 21 Comments.
FFmpeg benchmark with settings of Encoder: libx265, Scenario: Live. Default was the fastest.
FFmpeg benchmark with settings of Encoder: libx265, Scenario: Live. Default was the fastest.
FFmpeg benchmark with settings of Encoder: libx265, Scenario: Live. Default was the fastest.

With using FFmpeg for some live video handling, there was around a 10% performance hit running in the Optimized Power Mode. But there was a 95 Watt power saving! The peak CPU power consumption was nearly 100 Watts lower. This led to a 31% boost in power efficiency for FFmpeg workloads on the Xeon Platinum Emerald Rapids server.

FFmpeg benchmark with settings of Encoder: libx265, Scenario: Video On Demand. Default was the fastest.
FFmpeg benchmark with settings of Encoder: libx265, Scenario: Video On Demand. Default was the fastest.
FFmpeg benchmark with settings of Encoder: libx265, Scenario: Video On Demand. Default was the fastest.

With an FFmpeg video-on-demand setup there was a slight hit to the raw performance but running at 69% the original 2P CPU power consumption and in turn driving up the performance-per-Watt by nearly 40%.

Xmrig benchmark with settings of Variant: Monero, Hash Count: 1M. Default was the fastest.
Xmrig benchmark with settings of Variant: Monero, Hash Count: 1M. Default was the fastest.
Xmrig benchmark with settings of Variant: Monero, Hash Count: 1M. Default was the fastest.

For a very scalable workload like Xmrig for Monero mining that keeps all of the CPU cores very busy, the raw performance was virtually unchanged but even hear with all the resource utilization the Xeon Platinum 8592+ 2P delivered so at 96% the out-of-the-box power consumption. The minimum CPU power consumption was also lower and the time spent in the lower power states.

Zstd Compression benchmark with settings of Compression Level: 19, Long Mode, Compression Speed. Default was the fastest.
Zstd Compression benchmark with settings of Compression Level: 19, Long Mode, Decompression Speed. Default was the fastest.
Zstd Compression benchmark with settings of Compression Level: 19, Long Mode, Decompression Speed. Default was the fastest.
Zstd Compression benchmark with settings of Compression Level: 19, Long Mode, Decompression Speed. Default was the fastest.

Decompressing a Zstandard compressed file alone isn't enough to keep a 256-thread server busy... In exchange for a slight hit to the decompression speed with Optimized Power Mode, there was 100 Watt lower power consumption and the overall performance-per-Watt increasing by 40%.


Related Articles