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Core i7-8700k vs Xeon E5-2620 v4


Description
The i7-8700k is based on Coffee Lake architecture while the E5-2620 v4 is based on Broadwell.

Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the E5-2620 v4 gets 237.8 k points.

Summarizing, the i7-8700k is 1.9 times faster than the E5-2620 v4. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
406f1
Core
Coffee Lake-S
Broadwell-EP
Architecture
Base frecuency
3.7 GHz
2.1 GHz
Boost frecuency
4.7 GHz
3 GHz
Socket
LGA 1151
Socket 2011-3
Cores/Threads
6/12
8/16
TDP
95 W
85 W
Cache L1 (d+i)
6x32+6x32 kB
8x32+8x32 kB
Cache L2
6x256 kB
8x256 kB
Cache L3
12288 kB
20480 kB
Date
October 2017
March 2016
Mean monothread perf.
80.6k points
29.39k points
Mean multithread perf.
443.77k points
237.83k 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
i7-8700k
E5-2620 v4
Test#1 (Integers)
4.13k
2.6k (x0.63)
Test#2 (FP)
16.96k
7.55k (x0.45)
Test#3 (Generic, ZIP)
5.56k
2.61k (x0.47)
Test#1 (Memory)
12.85k
2.03k (x0.16)
TOTAL
39.5k
14.79k (x0.37)

Multithread

i7-8700k

E5-2620 v4
Test#1 (Integers)
24.01k
17.41k (x0.73)
Test#2 (FP)
108.69k
75.46k (x0.69)
Test#3 (Generic, ZIP)
36.62k
26.25k (x0.72)
Test#1 (Memory)
9.33k
4.65k (x0.5)
TOTAL
178.64k
123.78k (x0.69)

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
i7-8700k
E5-2620 v4
Test#1 (Integers)
12.92k
8.22k (x0.64)
Test#2 (FP)
20.68k
12.06k (x0.58)
Test#3 (Generic, ZIP)
5.3k
4.01k (x0.76)
Test#1 (Memory)
12.59k
2.89k (x0.23)
TOTAL
51.48k
27.18k (x0.53)

Multithread

i7-8700k

E5-2620 v4
Test#1 (Integers)
94.26k
61.34k (x0.65)
Test#2 (FP)
152.55k
90.21k (x0.59)
Test#3 (Generic, ZIP)
39.74k
26.2k (x0.66)
Test#1 (Memory)
8.53k
4.62k (x0.54)
TOTAL
295.07k
182.37k (x0.62)

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
i7-8700k
E5-2620 v4
Test#1 (Integers)
16.87k
6.04k (x0.36)
Test#2 (FP)
26.12k
10.18k (x0.39)
Test#3 (Generic, ZIP)
6.33k
2.74k (x0.43)
Test#1 (Memory)
13.71k
2.41k (x0.18)
TOTAL
63.03k
21.37k (x0.34)

Multithread

i7-8700k

E5-2620 v4
Test#1 (Integers)
105.74k
47.51k (x0.45)
Test#2 (FP)
180.52k
75.12k (x0.42)
Test#3 (Generic, ZIP)
44.99k
19.72k (x0.44)
Test#1 (Memory)
8.51k
5.45k (x0.64)
TOTAL
339.77k
147.8k (x0.44)

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 v4
Test#1 (Integers)
31.2k
12.16k (x0.39)
Test#2 (FP)
27.82k
11.82k (x0.42)
Test#3 (Generic, ZIP)
6.57k
3.02k (x0.46)
Test#1 (Memory)
15k
2.4k (x0.16)
TOTAL
80.6k
29.39k (x0.36)

Multithread

i7-8700k

E5-2620 v4
Test#1 (Integers)
202.42k
103.77k (x0.51)
Test#2 (FP)
186.33k
102.28k (x0.55)
Test#3 (Generic, ZIP)
44.96k
26.13k (x0.58)
Test#1 (Memory)
10.05k
5.65k (x0.56)
TOTAL
443.77k
237.83k (x0.54)

Performance/W
i7-8700k
E5-2620 v4
Test#1 (Integers)
2131 points/W
1221 points/W
Test#2 (FP)
1961 points/W
1203 points/W
Test#3 (Generic, ZIP)
473 points/W
307 points/W
Test#1 (Memory)
106 points/W
66 points/W
TOTAL
4671 points/W
2798 points/W

Performance/GHz
i7-8700k
E5-2620 v4
Test#1 (Integers)
6639 points/GHz
4054 points/GHz
Test#2 (FP)
5919 points/GHz
3939 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1005 points/GHz
Test#1 (Memory)
3192 points/GHz
799 points/GHz
TOTAL
17148 points/GHz
9798 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