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AMD EPYC Turin 128 Core Comparison: EPYC 9745 "Zen 5C" vs. EPYC 9755 "Zen 5"

Phoronix - 16 hours 16 min ago
The AMD EPYC 9755 128-core Zen 5 server processor has been benchmarked a lot at Phoronix since the EPYC 9005 "Turin" launch as their top-end Zen 5 server processor with "full fat" cores compared to the denser Zen 5C cores that extend up to the EPYC 9965 at 192 cores. For those eyeing the 128 core per socket sweet spot, there is also the EPYC 9745 that is made up of 128 Zen 5C cores that allows for a 400 Watt TDP compared to the 500 Watt EPYC 9755. Today's benchmarking is comparing the EPYC 9745 and EPYC 9755 performance and power difference.

Linux 7.1 Will Power Off The System By Default If A Fatal ACPI Error Occurs

Phoronix - 19 hours 57 min ago
An important default kernel behavior change worth noting in advance for the upcoming Linux 7.1 kernel is that the system will attempt to power-off automatically if encountering any fatal ACPI errors. Up to now the Linux kernel has just logged ACPI fatal errors...

Linux 7.0 Shows Off Nice Performance Gains For Databases In Small AMD EPYC Servers

Phoronix - Mon, 03/02/2026 - 23:20
Last week with my ongoing testing of the in-development Linux 7.0 kernel I found nice performance improvements for PostgreSQL and other workloads when testing on a 128-core AMD EPYC 9755 "Turin" server. Curious if those wins were due to optimizations focused on better scalability with today's "big" servers, I also ran some comparison Linux 7.0 benchmarks on the smaller AMD EPYC 4005 class servers too. Some nice wins carried over...

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