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Core i7-6500U vs i7-8700


Description
The i7-6500U is based on Skylake architecture while the i7-8700 is based on Coffee Lake.

Using the multithread performance as a reference, the i7-6500U gets a score of 97.5 k points while the i7-8700 gets 389 k points.

Summarizing, the i7-8700 is 4 times faster than the i7-6500U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
906ea
Core
Skylake-U
Coffee Lake-S
Architecture
Base frecuency
2.5 GHz
3.2 GHz
Boost frecuency
3.1 GHz
4.6 GHz
Socket
BGA1356
LGA 1151
Cores/Threads
2/4
6/12
TDP
15 W
65 W
Cache L1 (d+i)
2x32+2x32 kB
6x32+6x32 kB
Cache L2
4096 kB
6x256 kB
Cache L3
kB
12288 kB
Date
September 2015
October 2017
Mean monothread perf.
46.25k points
75.01k points
Mean multithread perf.
97.52k 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
i7-6500U
i7-8700
Test#1 (Integers)
2.98k
4.48k (x1.51)
Test#2 (FP)
12.19k
18.31k (x1.5)
Test#3 (Generic, ZIP)
3.91k
5.88k (x1.5)
Test#1 (Memory)
5.3k
13.45k (x2.54)
TOTAL
24.37k
42.12k (x1.73)

Multithread

i7-6500U

i7-8700
Test#1 (Integers)
6.1k
27.35k (x4.49)
Test#2 (FP)
28.73k
124.94k (x4.35)
Test#3 (Generic, ZIP)
9.56k
43.23k (x4.52)
Test#1 (Memory)
6.71k
7.08k (x1.06)
TOTAL
51.09k
202.61k (x3.97)

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
i7-6500U
i7-8700
Test#1 (Integers)
11.11k
16.45k (x1.48)
Test#2 (FP)
15.97k
23.74k (x1.49)
Test#3 (Generic, ZIP)
4.25k
6.24k (x1.47)
Test#1 (Memory)
5.66k
13.43k (x2.37)
TOTAL
36.99k
59.86k (x1.62)

Multithread

i7-6500U

i7-8700
Test#1 (Integers)
23.1k
100.94k (x4.37)
Test#2 (FP)
36.73k
159.09k (x4.33)
Test#3 (Generic, ZIP)
9.99k
43.61k (x4.37)
Test#1 (Memory)
7k
6.59k (x0.94)
TOTAL
76.82k
310.23k (x4.04)

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
i7-6500U
i7-8700
Test#1 (Integers)
11.09k
16.57k (x1.49)
Test#2 (FP)
17.1k
25.52k (x1.49)
Test#3 (Generic, ZIP)
4.12k
6.01k (x1.46)
Test#1 (Memory)
5.58k
12.82k (x2.3)
TOTAL
37.9k
60.92k (x1.61)

Multithread

i7-6500U

i7-8700
Test#1 (Integers)
23.3k
101.85k (x4.37)
Test#2 (FP)
38.52k
170.31k (x4.42)
Test#3 (Generic, ZIP)
9.95k
43.12k (x4.33)
Test#1 (Memory)
6.95k
7.11k (x1.02)
TOTAL
78.72k
322.39k (x4.1)

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
i7-6500U
i7-8700
Test#1 (Integers)
19.47k
29.25k (x1.5)
Test#2 (FP)
17.58k
25.98k (x1.48)
Test#3 (Generic, ZIP)
4.05k
6.05k (x1.5)
Test#1 (Memory)
5.15k
13.74k (x2.67)
TOTAL
46.25k
75.01k (x1.62)

Multithread

i7-6500U

i7-8700
Test#1 (Integers)
42.05k
182.56k (x4.34)
Test#2 (FP)
40.2k
159.9k (x3.98)
Test#3 (Generic, ZIP)
9.4k
38.18k (x4.06)
Test#1 (Memory)
5.86k
8.31k (x1.42)
TOTAL
97.52k
388.95k (x3.99)

Performance/W
i7-6500U
i7-8700
Test#1 (Integers)
2803 points/W
2809 points/W
Test#2 (FP)
2680 points/W
2460 points/W
Test#3 (Generic, ZIP)
626 points/W
587 points/W
Test#1 (Memory)
391 points/W
128 points/W
TOTAL
6501 points/W
5984 points/W

Performance/GHz
i7-6500U
i7-8700
Test#1 (Integers)
6279 points/GHz
6358 points/GHz
Test#2 (FP)
5672 points/GHz
5647 points/GHz
Test#3 (Generic, ZIP)
1305 points/GHz
1316 points/GHz
Test#1 (Memory)
1662 points/GHz
2986 points/GHz
TOTAL
14918 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