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Core i7-5820K vs Xeon E5-2620 v4


Description
The i7-5820K is based on Haswell architecture while the E5-2620 v4 is based on Broadwell.

Using the multithread performance as a reference, the i7-5820K gets a score of 129.1 k points while the E5-2620 v4 gets 147.8 k points.

Summarizing, the E5-2620 v4 is 1.1 times faster than the i7-5820K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306f2
406f1
Core
Haswell-E
Broadwell-EP
Architecture
Base frecuency
3.3 GHz
2.1 GHz
Boost frecuency
3.6 GHz
3 GHz
Socket
LGA 1150
Socket 2011-3
Cores/Threads
6/12
8/16
TDP
140 W
85 W
Cache L1 (d+i)
32+32 kB
8x32+8x32 kB
Cache L2
256 kB
8x256 kB
Cache L3
15360 kB
20480 kB
Date
September 2014
March 2016
Mean monothread perf.
31.53k points
29.39k points
Mean multithread perf.
129.06k 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
i7-5820K
E5-2620 v4
Test#1 (Integers)
3.82k
2.6k (x0.68)
Test#2 (FP)
9.64k
7.55k (x0.78)
Test#3 (Generic, ZIP)
4.29k
2.61k (x0.61)
Test#1 (Memory)
3.78k
2.03k (x0.54)
TOTAL
21.53k
14.79k (x0.69)

Multithread

i7-5820K

E5-2620 v4
Test#1 (Integers)
18.07k
17.41k (x0.96)
Test#2 (FP)
64.25k
75.46k (x1.17)
Test#3 (Generic, ZIP)
27.03k
26.25k (x0.97)
Test#1 (Memory)
8.03k
4.65k (x0.58)
TOTAL
117.38k
123.78k (x1.05)

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
i7-5820K
E5-2620 v4
Test#1 (Integers)
12.03k
6.04k (x0.5)
Test#2 (FP)
11.23k
10.18k (x0.91)
Test#3 (Generic, ZIP)
4.55k
2.74k (x0.6)
Test#1 (Memory)
3.72k
2.41k (x0.65)
TOTAL
31.53k
21.37k (x0.68)

Multithread

i7-5820K

E5-2620 v4
Test#1 (Integers)
49.48k
47.51k (x0.96)
Test#2 (FP)
52.21k
75.12k (x1.44)
Test#3 (Generic, ZIP)
19.7k
19.72k (x1)
Test#1 (Memory)
7.67k
5.45k (x0.71)
TOTAL
129.06k
147.8k (x1.15)

Performance/W
i7-5820K
E5-2620 v4
Test#1 (Integers)
353 points/W
559 points/W
Test#2 (FP)
373 points/W
884 points/W
Test#3 (Generic, ZIP)
141 points/W
232 points/W
Test#1 (Memory)
55 points/W
64 points/W
TOTAL
922 points/W
1739 points/W

Performance/GHz
i7-5820K
E5-2620 v4
Test#1 (Integers)
3343 points/GHz
2013 points/GHz
Test#2 (FP)
3119 points/GHz
3393 points/GHz
Test#3 (Generic, ZIP)
1264 points/GHz
915 points/GHz
Test#1 (Memory)
1033 points/GHz
802 points/GHz
TOTAL
8759 points/GHz
7123 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