Pushing modern and even relatively recent Intel CPUs with locked multipliers is a pain. The BCLK frequency is tightly coupled to other parts of the CPU, meaning its maximum stable speed is, at best, limited to 104-109MHz—and that's if you have a decent motherboard. Sure, there's a trick to push Skylake chips above 110MHz BCLK, but it almost halves the execution speed of AVX/AVX2 instructions. That kind of performance hit is a non-starter for current benchmarks, most of which rely heavily on AVX/AVX2 extensions for significant speedups. The benchmark highlighted in this article, HWBOT x265 Benchmark:
French enthusiast darkgregor has clinched two gold medals in the Intel Core i3-6320 chip category. The dual-core processor hit 4016MHz and 4011MHz for HWBOT x265 Benchmark - 1080p and HWBOT x265 Benchmark - 4k respectively:
Discipline: | Result: | CPU frequency: |
17.548 fps | 4016МГц | |
4.129 fps | 4011МГц |
This relatively low final clock speed meant the overclocker didn't have to resort to extreme cooling. He simply used a "basic" liquid cooling setup. To hit 4016MHz and 4011MHz, the Frenchman just set the BCLK to a modest 102.93MHz and 102.86MHz, respectively. RAM was clocked at roughly 3980MHz with 12-12-12-28 timings.
The test bench darkgregor consisted of these components:
Motherboard - ASUS ROG Maximus IX Apex
RAM - 2x 8GB KFA2 Hall Of Fame DDR4-4000 (HOF4CXLBS4000M19SF162K)
And here's what it looked like:
⤢ ВІДКРИТИSource: Enthusiast's profile on HWBot
