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Core i7-11700 vs i9-7980XE


Description
The i7-11700 is based on Rocket Lake architecture while the i9-7980XE is based on Skylake.

Using the multithread performance as a reference, the i7-11700 gets a score of 729 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-7980XE is 1.7 times faster than the i7-11700. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0671
50654
Core
Rocket Lake-S
Skylake-X
Architecture
Base frecuency
2.5 GHz
2.6 GHz
Boost frecuency
4.9 GHz
4.4 GHz
Socket
LGA 1200
LGA 2066
Cores/Threads
8/16
18/36
TDP
65 W
165 W
Cache L1 (d+i)
8x32+8x48 kB
18x32+18x32 kB
Cache L2
8x512 kB
18x1024 kB
Cache L3
16384 kB
25344 kB
Date
March 2021
May 2017
Mean monothread perf.
98.87k points
76.43k points
Mean multithread perf.
728.98k points
1223.79k 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
i7-11700
i9-7980XE
Test#1 (Integers)
5.48k
4.89k (x0.89)
Test#2 (FP)
20.99k
19.98k (x0.95)
Test#3 (Generic, ZIP)
12.58k
6.14k (x0.49)
Test#1 (Memory)
21.24k
9.81k (x0.46)
TOTAL
60.28k
40.82k (x0.68)

Multithread

i7-11700

i9-7980XE
Test#1 (Integers)
44.15k
79.8k (x1.81)
Test#2 (FP)
196.6k
372.72k (x1.9)
Test#3 (Generic, ZIP)
102.57k
121.42k (x1.18)
Test#1 (Memory)
10.64k
26.48k (x2.49)
TOTAL
353.96k
600.43k (x1.7)

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
i7-11700
i9-7980XE
Test#1 (Integers)
35.12k
31.16k (x0.89)
Test#2 (FP)
29.24k
28.13k (x0.96)
Test#3 (Generic, ZIP)
12.56k
6.65k (x0.53)
Test#1 (Memory)
21.95k
10.5k (x0.48)
TOTAL
98.87k
76.43k (x0.77)

Multithread

i7-11700

i9-7980XE
Test#1 (Integers)
304k
560.19k (x1.84)
Test#2 (FP)
304.7k
516.97k (x1.7)
Test#3 (Generic, ZIP)
109.64k
123.94k (x1.13)
Test#1 (Memory)
10.64k
22.69k (x2.13)
TOTAL
728.98k
1223.79k (x1.68)

Performance/W
i7-11700
i9-7980XE
Test#1 (Integers)
4677 points/W
3395 points/W
Test#2 (FP)
4688 points/W
3133 points/W
Test#3 (Generic, ZIP)
1687 points/W
751 points/W
Test#1 (Memory)
164 points/W
137 points/W
TOTAL
11215 points/W
7417 points/W

Performance/GHz
i7-11700
i9-7980XE
Test#1 (Integers)
7168 points/GHz
7081 points/GHz
Test#2 (FP)
5967 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
2563 points/GHz
1512 points/GHz
Test#1 (Memory)
4479 points/GHz
2386 points/GHz
TOTAL
20177 points/GHz
17371 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