F5F Stay Refreshed Hardware Desktop IPC values for recent CPU generations in Prime95 vary by generation. Check specific benchmarks for accurate numbers.

IPC values for recent CPU generations in Prime95 vary by generation. Check specific benchmarks for accurate numbers.

IPC values for recent CPU generations in Prime95 vary by generation. Check specific benchmarks for accurate numbers.

I
iSenpaiKitty
Member
Find
197
07-22-2018, 02:18 AM
#1
AMD's hints about Zen 5 are still uncertain. The speculation about improved FPU performance remains unverified. Comparing recent models to Intel's offerings with AVX-512 support is challenging due to unconstrained clock speeds, which could introduce minor inaccuracies. Relative Prime95 IPC using AVX2 and AVX-512 under normal conditions reached 100% on Skylake AVX2, 173% on Rocket Lake, 128% on Alder Lake, and 131% on Zen 4. From previous tests, Rocket Lake showed roughly a 40% boost and Skylake-X about 80% compared to Skylake. These results align with expectations, suggesting the latest testing is consistent. I hadn't evaluated AVX2 gains before; they appear stronger than anticipated. Alder Lake's AVX2 performance matches Rocket Lake's AVX-512 results and even surpasses Zen 4. The leap from AVX2 to AVX-512 within the same architecture is notable, with Skylake-X gaining 73%, Rocket Lake 12%, Zen 4 16%. The extra FPU resources in Rocket Lake and Zen 4 likely contribute to the larger gains. Other microarchitecture enhancements also play a role in boosting overall speed. It would be valuable to observe how Sapphire Rapids fares in this landscape, though it remains beyond my budget. I'll monitor updates on Zen 5 developments.
Reply
Reply
I
iSenpaiKitty
07-22-2018, 02:18 AM #1

AMD's hints about Zen 5 are still uncertain. The speculation about improved FPU performance remains unverified. Comparing recent models to Intel's offerings with AVX-512 support is challenging due to unconstrained clock speeds, which could introduce minor inaccuracies. Relative Prime95 IPC using AVX2 and AVX-512 under normal conditions reached 100% on Skylake AVX2, 173% on Rocket Lake, 128% on Alder Lake, and 131% on Zen 4. From previous tests, Rocket Lake showed roughly a 40% boost and Skylake-X about 80% compared to Skylake. These results align with expectations, suggesting the latest testing is consistent. I hadn't evaluated AVX2 gains before; they appear stronger than anticipated. Alder Lake's AVX2 performance matches Rocket Lake's AVX-512 results and even surpasses Zen 4. The leap from AVX2 to AVX-512 within the same architecture is notable, with Skylake-X gaining 73%, Rocket Lake 12%, Zen 4 16%. The extra FPU resources in Rocket Lake and Zen 4 likely contribute to the larger gains. Other microarchitecture enhancements also play a role in boosting overall speed. It would be valuable to observe how Sapphire Rapids fares in this landscape, though it remains beyond my budget. I'll monitor updates on Zen 5 developments.

Reply
Reply