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Core i7-8700k vs E5-2620 v3


Description
The i7-8700k is based on Coffee Lake architecture while the E5-2620 v3 is based on Haswell.

Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the E5-2620 v3 gets 358 k points.

Summarizing, the i7-8700k is 1.2 times faster than the E5-2620 v3. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
306f2
Core
Coffee Lake-S
Haswell-EP
Architecture
Base frecuency
3.7 GHz
2.4 GHz
Boost frecuency
4.7 GHz
3.2 GHz
Socket
LGA 1151
LGA 2011-3
Cores/Threads
6/12
6/12
TDP
95 W
85 W
Cache L1 (d+i)
6x32+6x32 kB
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
12288 kB
15360 kB
Date
October 2017
September 2014
Mean monothread perf.
80.6k points
35.86k points
Mean multithread perf.
443.77k points
357.99k points

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
i7-8700k
E5-2620 v3
Test#1 (Integers)
31.2k
18.64k (x0.6)
Test#2 (FP)
27.82k
10.55k (x0.38)
Test#3 (Generic, ZIP)
6.57k
4.12k (x0.63)
Test#1 (Memory)
15k
2.54k (x0.17)
TOTAL
80.6k
35.86k (x0.44)

Multithread

i7-8700k

E5-2620 v3
Test#1 (Integers)
202.42k
181.66k (x0.9)
Test#2 (FP)
186.33k
122.09k (x0.66)
Test#3 (Generic, ZIP)
44.96k
47.02k (x1.05)
Test#1 (Memory)
10.05k
7.22k (x0.72)
TOTAL
443.77k
357.99k (x0.81)

Performance/W
i7-8700k
E5-2620 v3
Test#1 (Integers)
2131 points/W
2137 points/W
Test#2 (FP)
1961 points/W
1436 points/W
Test#3 (Generic, ZIP)
473 points/W
553 points/W
Test#1 (Memory)
106 points/W
85 points/W
TOTAL
4671 points/W
4212 points/W

Performance/GHz
i7-8700k
E5-2620 v3
Test#1 (Integers)
6639 points/GHz
5826 points/GHz
Test#2 (FP)
5919 points/GHz
3297 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1288 points/GHz
Test#1 (Memory)
3192 points/GHz
794 points/GHz
TOTAL
17148 points/GHz
11205 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