| | | |

Core i7-8700k vs Xeon E5-2620


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

Using the multithread performance as a reference, the i7-8700k gets a score of 339.8 k points while the E5-2620 gets 224.7 k points.

Summarizing, the i7-8700k is 1.5 times faster than the E5-2620. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
206d7
Core
Coffee Lake-S
Sandy Bridge-EP
Architecture
Base frecuency
3.7 GHz
2 GHz
Boost frecuency
4.7 GHz
2.5 GHz
Socket
LGA 1151
LGA 2011
Cores/Threads
6/12
6/12
TDP
95 W
95 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
March 2012

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
Test#1 (Integers)
16874
6950 (-58.81%)
Test#2 (FP)
26119
6236 (-76.13%)
Test#3 (Generic, ZIP)
6329
3050 (-51.81%)
Test#1 (Memory)
13708
2561 (-81.32%)
TOTAL
63030
18797 (-70.18%)

Multithread

i7-8700k

E5-2620
Test#1 (Integers)
105740
90013 (-14.87%)
Test#2 (FP)
180520
82434 (-54.34%)
Test#3 (Generic, ZIP)
44994
42593 (-5.34%)
Test#1 (Memory)
8512
9659 (13.48%)
TOTAL
339766
224700 (-33.87%)

Performance/W
i7-8700k
E5-2620
Test#1 (Integers)
1113 points/W
948 points/W
Test#2 (FP)
1900 points/W
868 points/W
Test#3 (Generic, ZIP)
474 points/W
448 points/W
Test#1 (Memory)
90 points/W
102 points/W
TOTAL
3576 points/W
2365 points/W

Performance/GHz
i7-8700k
E5-2620
Test#1 (Integers)
3590 points/GHz
2780 points/GHz
Test#2 (FP)
5557 points/GHz
2494 points/GHz
Test#3 (Generic, ZIP)
1347 points/GHz
1220 points/GHz
Test#1 (Memory)
2917 points/GHz
1024 points/GHz
TOTAL
13411 points/GHz
7519 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