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Core i7-11700 vs i7-8700


Description
The i7-11700 is based on Rocket Lake architecture while the i7-8700 is based on Coffee Lake.

Using the multithread performance as a reference, the i7-11700 gets a score of 729 k points while the i7-8700 gets 389 k points.

Summarizing, the i7-11700 is 1.9 times faster than the i7-8700. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0671
906ea
Core
Rocket Lake-S
Coffee Lake-S
Architecture
Base frecuency
2.5 GHz
3.2 GHz
Boost frecuency
4.9 GHz
4.6 GHz
Socket
LGA 1200
LGA 1151
Cores/Threads
8/16
6/12
TDP
65 W
65 W
Cache L1 (d+i)
8x32+8x48 kB
6x32+6x32 kB
Cache L2
8x512 kB
6x256 kB
Cache L3
16384 kB
12288 kB
Date
March 2021
October 2017
Mean monothread perf.
98.87k points
75.01k points
Mean multithread perf.
728.98k points
388.95k 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
i7-8700
Test#1 (Integers)
5.48k
4.48k (x0.82)
Test#2 (FP)
20.99k
18.31k (x0.87)
Test#3 (Generic, ZIP)
12.58k
5.88k (x0.47)
Test#1 (Memory)
21.24k
13.45k (x0.63)
TOTAL
60.28k
42.12k (x0.7)

Multithread

i7-11700

i7-8700
Test#1 (Integers)
44.15k
27.35k (x0.62)
Test#2 (FP)
196.6k
124.94k (x0.64)
Test#3 (Generic, ZIP)
102.57k
43.23k (x0.42)
Test#1 (Memory)
10.64k
7.08k (x0.67)
TOTAL
353.96k
202.61k (x0.57)

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
i7-11700
i7-8700
Test#1 (Integers)
18.05k
16.45k (x0.91)
Test#2 (FP)
26.13k
23.74k (x0.91)
Test#3 (Generic, ZIP)
13.92k
6.24k (x0.45)
Test#1 (Memory)
21.22k
13.43k (x0.63)
TOTAL
79.32k
59.86k (x0.75)

Multithread

i7-11700

i7-8700
Test#1 (Integers)
160.49k
100.94k (x0.63)
Test#2 (FP)
225.25k
159.09k (x0.71)
Test#3 (Generic, ZIP)
113.88k
43.61k (x0.38)
Test#1 (Memory)
10.64k
6.59k (x0.62)
TOTAL
510.25k
310.23k (x0.61)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-11700
i7-8700
Test#1 (Integers)
18.96k
16.57k (x0.87)
Test#2 (FP)
28.34k
25.52k (x0.9)
Test#3 (Generic, ZIP)
13.26k
6.01k (x0.45)
Test#1 (Memory)
20.2k
12.82k (x0.63)
TOTAL
80.76k
60.92k (x0.75)

Multithread

i7-11700

i7-8700
Test#1 (Integers)
164.31k
101.85k (x0.62)
Test#2 (FP)
253.96k
170.31k (x0.67)
Test#3 (Generic, ZIP)
115.28k
43.12k (x0.37)
Test#1 (Memory)
10.65k
7.11k (x0.67)
TOTAL
544.2k
322.39k (x0.59)

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
i7-8700
Test#1 (Integers)
35.12k
29.25k (x0.83)
Test#2 (FP)
29.24k
25.98k (x0.89)
Test#3 (Generic, ZIP)
12.56k
6.05k (x0.48)
Test#1 (Memory)
21.95k
13.74k (x0.63)
TOTAL
98.87k
75.01k (x0.76)

Multithread

i7-11700

i7-8700
Test#1 (Integers)
304k
182.56k (x0.6)
Test#2 (FP)
304.7k
159.9k (x0.52)
Test#3 (Generic, ZIP)
109.64k
38.18k (x0.35)
Test#1 (Memory)
10.64k
8.31k (x0.78)
TOTAL
728.98k
388.95k (x0.53)

Performance/W
i7-11700
i7-8700
Test#1 (Integers)
4677 points/W
2809 points/W
Test#2 (FP)
4688 points/W
2460 points/W
Test#3 (Generic, ZIP)
1687 points/W
587 points/W
Test#1 (Memory)
164 points/W
128 points/W
TOTAL
11215 points/W
5984 points/W

Performance/GHz
i7-11700
i7-8700
Test#1 (Integers)
7168 points/GHz
6358 points/GHz
Test#2 (FP)
5967 points/GHz
5647 points/GHz
Test#3 (Generic, ZIP)
2563 points/GHz
1316 points/GHz
Test#1 (Memory)
4479 points/GHz
2986 points/GHz
TOTAL
20177 points/GHz
16307 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