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Core i9-10980XE vs i7-6700K


Description
The i9-10980XE is based on Cascade Lake architecture while the i7-6700K is based on Skylake.

Using the multithread performance as a reference, the i9-10980XE gets a score of 1241.1 k points while the i7-6700K gets 254.6 k points.

Summarizing, the i9-10980XE is 4.9 times faster than the i7-6700K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
50657
506e3
Core
Cascade Lake-X
Skylake-S
Architecture
Base frecuency
3 GHz
4 GHz
Boost frecuency
4.8 GHz
4.2 GHz
Socket
LGA 2066
LGA 1151
Cores/Threads
18/36
4/8
TDP
165 W
95 W
Cache L1 (d+i)
18x32+18x32 kB
4x32+4x32 kB
Cache L2
18x1024 kB
256 kB
Cache L3
25344 kB
8192 kB
Date
November 2019
May 2015
Mean monothread perf.
68.33k points
63.22k points
Mean multithread perf.
1241.12k points
254.56k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i9-10980XE
i7-6700K
Test#1 (Integers)
4.52k
4.07k (x0.9)
Test#2 (FP)
17.94k
16.62k (x0.93)
Test#3 (Generic, ZIP)
5.5k
5.23k (x0.95)
Test#1 (Memory)
9.64k
6.28k (x0.65)
TOTAL
37.6k
32.2k (x0.86)

Multithread

i9-10980XE

i7-6700K
Test#1 (Integers)
84.93k
16.37k (x0.19)
Test#2 (FP)
409.55k
77.34k (x0.19)
Test#3 (Generic, ZIP)
122.88k
25.65k (x0.21)
Test#1 (Memory)
22.12k
10.21k (x0.46)
TOTAL
639.48k
129.57k (x0.2)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i9-10980XE
i7-6700K
Test#1 (Integers)
16.03k
14.73k (x0.92)
Test#2 (FP)
23.95k
21.27k (x0.89)
Test#3 (Generic, ZIP)
6.03k
5.52k (x0.92)
Test#1 (Memory)
9.37k
6.32k (x0.67)
TOTAL
55.38k
47.84k (x0.86)

Multithread

i9-10980XE

i7-6700K
Test#1 (Integers)
316.11k
61.09k (x0.19)
Test#2 (FP)
503.75k
99.17k (x0.2)
Test#3 (Generic, ZIP)
131.82k
26.57k (x0.2)
Test#1 (Memory)
22.24k
10.26k (x0.46)
TOTAL
973.92k
197.09k (x0.2)

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i9-10980XE
i7-6700K
Test#1 (Integers)
29.53k
25.78k (x0.87)
Test#2 (FP)
22.59k
23.08k (x1.02)
Test#3 (Generic, ZIP)
5.99k
5.32k (x0.89)
Test#1 (Memory)
10.22k
9.03k (x0.88)
TOTAL
68.33k
63.22k (x0.93)

Multithread

i9-10980XE

i7-6700K
Test#1 (Integers)
587.06k
112.83k (x0.19)
Test#2 (FP)
496.41k
106.86k (x0.22)
Test#3 (Generic, ZIP)
134.66k
25.76k (x0.19)
Test#1 (Memory)
22.99k
9.12k (x0.4)
TOTAL
1241.12k
254.56k (x0.21)

Performance/W
i9-10980XE
i7-6700K
Test#1 (Integers)
3558 points/W
1188 points/W
Test#2 (FP)
3009 points/W
1125 points/W
Test#3 (Generic, ZIP)
816 points/W
271 points/W
Test#1 (Memory)
139 points/W
96 points/W
TOTAL
7522 points/W
2680 points/W

Performance/GHz
i9-10980XE
i7-6700K
Test#1 (Integers)
6153 points/GHz
6139 points/GHz
Test#2 (FP)
4707 points/GHz
5495 points/GHz
Test#3 (Generic, ZIP)
1248 points/GHz
1268 points/GHz
Test#1 (Memory)
2129 points/GHz
2150 points/GHz
TOTAL
14236 points/GHz
15052 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4