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Core i7-7700K vs Xeon E5-2620 v4


Description
The i7-7700K is based on Kaby Lake architecture while the E5-2620 v4 is based on Broadwell.

Using the multithread performance as a reference, the i7-7700K gets a score of 292.3 k points while the E5-2620 v4 gets 237.8 k points.

Summarizing, the i7-7700K is 1.2 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
906e9
406f1
Core
Kaby Lake-S
Broadwell-EP
Architecture
Base frecuency
4.2 GHz
2.1 GHz
Boost frecuency
4.5 GHz
3 GHz
Socket
LGA 1151
Socket 2011-3
Cores/Threads
4/8
8/16
TDP
95 W
85 W
Cache L1 (d+i)
32+32 kB
8x32+8x32 kB
Cache L2
256 kB
8x256 kB
Cache L3
8192 kB
20480 kB
Date
September 2016
March 2016

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
i7-7700K
E5-2620 v4
Test#1 (Integers)
4629
2604 (-43.76%)
Test#2 (FP)
18925
7552 (-60.10%)
Test#3 (Generic, ZIP)
6221
2612 (-58.02%)
Test#1 (Memory)
13922
2028 (-85.44%)
TOTAL
43698
14794 (-66.14%)

Multithread

i7-7700K

E5-2620 v4
Test#1 (Integers)
18529
17415 (-6.02%)
Test#2 (FP)
86487
75463 (-12.75%)
Test#3 (Generic, ZIP)
28778
26246 (-8.80%)
Test#1 (Memory)
9674
4652 (-51.92%)
TOTAL
143468
123775 (-13.73%)

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
i7-7700K
E5-2620 v4
Test#1 (Integers)
17549
6040 (-65.58%)
Test#2 (FP)
27822
10180 (-63.41%)
Test#3 (Generic, ZIP)
6796
2745 (-59.61%)
Test#1 (Memory)
14832
2406 (-83.78%)
TOTAL
66999
21370 (-68.10%)

Multithread

i7-7700K

E5-2620 v4
Test#1 (Integers)
68395
47514 (-30.53%)
Test#2 (FP)
118805
75116 (-36.77%)
Test#3 (Generic, ZIP)
33336
19719 (-40.85%)
Test#1 (Memory)
17434
5455 (-68.71%)
TOTAL
237970
147804 (-37.89%)

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
i7-7700K
E5-2620 v4
Test#1 (Integers)
30879
12163 (-60.61%)
Test#2 (FP)
27266
11818 (-56.66%)
Test#3 (Generic, ZIP)
6416
3016 (-52.99%)
Test#1 (Memory)
14011
2397 (-82.90%)
TOTAL
78572
29395 (-62.59%)

Multithread

i7-7700K

E5-2620 v4
Test#1 (Integers)
130361
103774 (-20.39%)
Test#2 (FP)
122434
102275 (-16.46%)
Test#3 (Generic, ZIP)
29679
26135 (-11.94%)
Test#1 (Memory)
9830
5646 (-42.57%)
TOTAL
292304
237831 (-18.64%)

Performance/W
i7-7700K
E5-2620 v4
Test#1 (Integers)
1372 points/W
1221 points/W
Test#2 (FP)
1289 points/W
1203 points/W
Test#3 (Generic, ZIP)
312 points/W
307 points/W
Test#1 (Memory)
103 points/W
66 points/W
TOTAL
3077 points/W
2798 points/W

Performance/GHz
i7-7700K
E5-2620 v4
Test#1 (Integers)
6862 points/GHz
4054 points/GHz
Test#2 (FP)
6059 points/GHz
3939 points/GHz
Test#3 (Generic, ZIP)
1426 points/GHz
1005 points/GHz
Test#1 (Memory)
3114 points/GHz
799 points/GHz
TOTAL
17460 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. 3.7.9