Code:

Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz
CPU speed: 4618.26 MHz, 8 cores
CPU features: Prefetchw, SSE, SSE2, SSE4, AVX, AVX2, FMA
L1 cache size: 32 KB
L2 cache size: 256 KB, L3 cache size: 12 MB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
TLBS: 64
Machine topology as determined by hwloc library:
Machine#0 (total=31361316KB, Backend=Windows, hwlocVersion=1.11.9, ProcessName=prime95.exe)
NUMANode#0 (local=31361316KB, total=31361316KB)
Package#0 (CPUVendor=GenuineIntel, CPUFamilyNumber=6, CPUModelNumber=158, CPUModel="Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz", CPUStepping=12)
L3 (size=12288KB, linesize=64, ways=12, Inclusive=1)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000001)
PU#0 (cpuset: 0x00000001)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000002)
PU#1 (cpuset: 0x00000002)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000004)
PU#2 (cpuset: 0x00000004)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000008)
PU#3 (cpuset: 0x00000008)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000010)
PU#4 (cpuset: 0x00000010)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000020)
PU#5 (cpuset: 0x00000020)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000040)
PU#6 (cpuset: 0x00000040)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000080)
PU#7 (cpuset: 0x00000080)
Prime95 64-bit version 29.4, RdtscTiming=1
Timings for 2048K FFT length (8 cores, 1 worker): 1.31 ms. Throughput: 764.95 iter/sec.
Timings for 2048K FFT length (8 cores, 8 workers): 14.82, 14.72, 14.52, 14.49, 14.71, 14.60, 14.51, 14.28 ms. Throughput: 548.75 iter/sec.
Timings for 2304K FFT length (8 cores, 1 worker): 1.60 ms. Throughput: 625.21 iter/sec.
Timings for 2304K FFT length (8 cores, 8 workers): 16.49, 16.10, 16.49, 16.10, 16.49, 16.46, 16.53, 16.42 ms. Throughput: 488.30 iter/sec.
Timings for 2400K FFT length (8 cores, 1 worker): 1.70 ms. Throughput: 587.97 iter/sec.
Timings for 2400K FFT length (8 cores, 8 workers): 17.40, 17.26, 17.26, 17.22, 17.38, 17.26, 17.26, 17.22 ms. Throughput: 462.85 iter/sec.
Timings for 2560K FFT length (8 cores, 1 worker): 1.86 ms. Throughput: 536.39 iter/sec.
Timings for 2560K FFT length (8 cores, 8 workers): 18.25, 18.16, 18.12, 18.10, 18.23, 18.10, 18.16, 17.98 ms. Throughput: 441.09 iter/sec.
Timings for 2688K FFT length (8 cores, 1 worker): 2.02 ms. Throughput: 494.11 iter/sec.
Timings for 2688K FFT length (8 cores, 8 workers): 19.10, 18.99, 18.99, 19.01, 19.07, 19.05, 19.11, 18.88 ms. Throughput: 420.53 iter/sec.
[Wed Dec 05 10:04:08 2018]
Timings for 2880K FFT length (8 cores, 1 worker): 2.23 ms. Throughput: 448.18 iter/sec.
Timings for 2880K FFT length (8 cores, 8 workers): 20.88, 20.76, 20.73, 20.64, 20.93, 20.67, 20.85, 20.64 ms. Throughput: 385.35 iter/sec.
Timings for 3072K FFT length (8 cores, 1 worker): 2.39 ms. Throughput: 418.09 iter/sec.
Timings for 3072K FFT length (8 cores, 8 workers): 22.02, 21.93, 21.79, 21.89, 21.81, 21.87, 21.87, 21.64 ms. Throughput: 366.11 iter/sec.
Timings for 3200K FFT length (8 cores, 1 worker): 2.61 ms. Throughput: 383.37 iter/sec.
Timings for 3200K FFT length (8 cores, 8 workers): 23.59, 23.51, 23.44, 23.40, 23.51, 23.47, 23.44, 23.40 ms. Throughput: 340.86 iter/sec.
Timings for 3360K FFT length (8 cores, 1 worker): 2.70 ms. Throughput: 370.59 iter/sec.
Timings for 3360K FFT length (8 cores, 8 workers): 24.24, 23.94, 24.10, 23.87, 24.09, 23.87, 23.98, 23.98 ms. Throughput: 333.24 iter/sec.
Timings for 3456K FFT length (8 cores, 1 worker): 2.81 ms. Throughput: 355.90 iter/sec.
Timings for 3456K FFT length (8 cores, 8 workers): 24.80, 25.09, 24.88, 24.77, 24.96, 24.94, 24.81, 24.70 ms. Throughput: 321.69 iter/sec.
Timings for 3584K FFT length (8 cores, 1 worker): 2.93 ms. Throughput: 341.43 iter/sec.
Timings for 3584K FFT length (8 cores, 8 workers): 25.79, 25.65, 25.61, 25.61, 25.62, 25.66, 25.65, 25.41 ms. Throughput: 312.22 iter/sec.
Timings for 3840K FFT length (8 cores, 1 worker): 3.19 ms. Throughput: 313.04 iter/sec.
Timings for 3840K FFT length (8 cores, 8 workers): 28.05, 28.29, 27.96, 28.26, 28.04, 28.19, 27.91, 27.67 ms. Throughput: 285.26 iter/sec.
Timings for 4096K FFT length (8 cores, 1 worker): 3.43 ms. Throughput: 291.60 iter/sec.
Timings for 4096K FFT length (8 cores, 8 workers): 29.63, 29.70, 29.52, 29.50, 29.57, 29.46, 29.38, 29.02 ms. Throughput: 271.45 iter/sec.
Timings for 4480K FFT length (8 cores, 1 worker): 3.92 ms. Throughput: 255.31 iter/sec.
Timings for 4480K FFT length (8 cores, 8 workers): 33.30, 33.44, 33.48, 33.48, 33.03, 33.12, 33.02, 32.89 ms. Throughput: 240.83 iter/sec.
Timings for 4608K FFT length (8 cores, 1 worker): 3.93 ms. Throughput: 254.74 iter/sec.
[Wed Dec 05 10:09:11 2018]
Timings for 4608K FFT length (8 cores, 8 workers): 33.55, 34.11, 33.76, 33.55, 33.49, 33.39, 34.16, 32.82 ms. Throughput: 238.12 iter/sec.
Timings for 4800K FFT length (8 cores, 1 worker): 4.24 ms. Throughput: 235.64 iter/sec.
Timings for 4800K FFT length (8 cores, 8 workers): 36.05, 35.27, 35.09, 34.97, 34.99, 36.64, 35.96, 36.60 ms. Throughput: 224.19 iter/sec.
Timings for 5120K FFT length (8 cores, 1 worker): 4.40 ms. Throughput: 227.11 iter/sec.
Timings for 5120K FFT length (8 cores, 8 workers): 37.30, 37.07, 36.99, 37.37, 37.14, 37.03, 37.25, 37.36 ms. Throughput: 215.12 iter/sec.
Timings for 5376K FFT length (8 cores, 1 worker): 4.76 ms. Throughput: 210.21 iter/sec.
Timings for 5376K FFT length (8 cores, 8 workers): 39.38, 39.36, 40.05, 39.34, 39.48, 40.46, 39.40, 39.37 ms. Throughput: 202.01 iter/sec.
Timings for 5760K FFT length (8 cores, 1 worker): 5.13 ms. Throughput: 194.98 iter/sec.
Timings for 5760K FFT length (8 cores, 8 workers): 42.89, 42.68, 42.10, 42.46, 42.64, 42.15, 42.42, 42.86 ms. Throughput: 188.14 iter/sec.
Timings for 6144K FFT length (8 cores, 1 worker): 5.45 ms. Throughput: 183.45 iter/sec.
Timings for 6144K FFT length (8 cores, 8 workers): 45.87, 45.47, 45.26, 44.99, 45.58, 45.03, 45.07, 45.31 ms. Throughput: 176.52 iter/sec.
Timings for 6400K FFT length (8 cores, 1 worker): 5.87 ms. Throughput: 170.44 iter/sec.
Timings for 6400K FFT length (8 cores, 8 workers): 48.17, 49.77, 47.79, 47.47, 49.77, 48.04, 48.74, 48.39 ms. Throughput: 164.94 iter/sec.
Timings for 6720K FFT length (8 cores, 1 worker): 5.89 ms. Throughput: 169.71 iter/sec.
Timings for 6720K FFT length (8 cores, 8 workers): 49.38, 49.70, 48.96, 48.72, 49.43, 48.83, 48.99, 49.28 ms. Throughput: 162.73 iter/sec.
Timings for 6912K FFT length (8 cores, 1 worker): 6.36 ms. Throughput: 157.17 iter/sec.
Timings for 6912K FFT length (8 cores, 8 workers): 51.82, 51.95, 51.54, 51.18, 51.56, 51.36, 51.48, 51.45 ms. Throughput: 155.21 iter/sec.
Timings for 7168K FFT length (8 cores, 1 worker): 6.29 ms. Throughput: 158.98 iter/sec.
Timings for 7168K FFT length (8 cores, 8 workers): 52.49, 52.82, 52.38, 52.47, 52.64, 52.17, 52.21, 52.62 ms. Throughput: 152.45 iter/sec.
[Wed Dec 05 10:14:24 2018]
Timings for 7680K FFT length (8 cores, 1 worker): 6.89 ms. Throughput: 145.19 iter/sec.
Timings for 7680K FFT length (8 cores, 8 workers): 56.80, 57.22, 56.94, 56.40, 56.49, 56.42, 56.53, 56.73 ms. Throughput: 141.12 iter/sec.
Timings for 8064K FFT length (8 cores, 1 worker): 7.30 ms. Throughput: 137.06 iter/sec.
Timings for 8064K FFT length (8 cores, 8 workers): 59.67, 60.04, 59.01, 58.81, 59.64, 59.21, 59.41, 59.50 ms. Throughput: 134.66 iter/sec.
Timings for 8192K FFT length (8 cores, 1 worker): 7.34 ms. Throughput: 136.20 iter/sec.
Timings for 8192K FFT length (8 cores, 8 workers): 61.18, 60.44, 60.17, 60.01, 61.28, 60.67, 60.56, 60.50 ms. Throughput: 132.01 iter/sec.