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Xeon E5-2670 v3 vs Core i5-6400


Description
The E5-2670 v3 is based on Haswell architecture while the i5-6400 is based on Skylake.

Using the multithread performance as a reference, the E5-2670 v3 gets a score of 452.9 k points while the i5-6400 gets 174.1 k points.

Summarizing, the E5-2670 v3 is 2.6 times faster than the i5-6400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306f2
506e3
Core
Haswell-EP
Skylake-S
Architecture
Base frecuency
2.3 GHz
2.7 GHz
Boost frecuency
3.1 GHz
3.3 GHz
Socket
LGA 2011-3
LGA 1151
Cores/Threads
12/24
4/4
TDP
120 W
65 W
Cache L1 (d+i)
12x32+12x32 kB
4x32+4x32 kB
Cache L2
12x256 kB
4x256 kB
Cache L3
30720 kB
6144 kB
Date
September 2014
September 2015
Mean monothread perf.
36.41k points
48.05k points
Mean multithread perf.
452.9k points
174.05k 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
E5-2670 v3
i5-6400
Test#1 (Integers)
3.52k
3.2k (x0.91)
Test#2 (FP)
8.68k
12.81k (x1.47)
Test#3 (Generic, ZIP)
2.83k
4.18k (x1.47)
Test#1 (Memory)
3.13k
4.3k (x1.38)
TOTAL
18.17k
24.49k (x1.35)

Multithread

E5-2670 v3

i5-6400
Test#1 (Integers)
32.7k
11.45k (x0.35)
Test#2 (FP)
105.18k
46.67k (x0.44)
Test#3 (Generic, ZIP)
35.18k
14.69k (x0.42)
Test#1 (Memory)
9.54k
5.92k (x0.62)
TOTAL
182.59k
78.73k (x0.43)

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
E5-2670 v3
i5-6400
Test#1 (Integers)
11.08k
11.56k (x1.04)
Test#2 (FP)
9.57k
16.53k (x1.73)
Test#3 (Generic, ZIP)
3.18k
4.3k (x1.35)
Test#1 (Memory)
3.28k
3.97k (x1.21)
TOTAL
27.11k
36.36k (x1.34)

Multithread

E5-2670 v3

i5-6400
Test#1 (Integers)
139.07k
43.01k (x0.31)
Test#2 (FP)
133.47k
64.46k (x0.48)
Test#3 (Generic, ZIP)
46.6k
16.14k (x0.35)
Test#1 (Memory)
6.65k
5.91k (x0.89)
TOTAL
325.78k
129.51k (x0.4)

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
E5-2670 v3
i5-6400
Test#1 (Integers)
11.18k
11.82k (x1.06)
Test#2 (FP)
10.06k
18.36k (x1.82)
Test#3 (Generic, ZIP)
3.21k
4.43k (x1.38)
Test#1 (Memory)
3.12k
4.95k (x1.59)
TOTAL
27.57k
39.56k (x1.43)

Multithread

E5-2670 v3

i5-6400
Test#1 (Integers)
140.98k
46.04k (x0.33)
Test#2 (FP)
145.37k
69.47k (x0.48)
Test#3 (Generic, ZIP)
45.62k
16.33k (x0.36)
Test#1 (Memory)
6.75k
7.74k (x1.15)
TOTAL
338.73k
139.58k (x0.41)

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
E5-2670 v3
i5-6400
Test#1 (Integers)
18.62k
21.1k (x1.13)
Test#2 (FP)
10.49k
18.28k (x1.74)
Test#3 (Generic, ZIP)
4.04k
4.22k (x1.05)
Test#1 (Memory)
3.26k
4.45k (x1.36)
TOTAL
36.41k
48.05k (x1.32)

Multithread

E5-2670 v3

i5-6400
Test#1 (Integers)
236.25k
80.03k (x0.34)
Test#2 (FP)
151.05k
71.1k (x0.47)
Test#3 (Generic, ZIP)
58.9k
16.19k (x0.27)
Test#1 (Memory)
6.7k
6.73k (x1)
TOTAL
452.9k
174.05k (x0.38)

Performance/W
E5-2670 v3
i5-6400
Test#1 (Integers)
1969 points/W
1231 points/W
Test#2 (FP)
1259 points/W
1094 points/W
Test#3 (Generic, ZIP)
491 points/W
249 points/W
Test#1 (Memory)
56 points/W
104 points/W
TOTAL
3774 points/W
2678 points/W

Performance/GHz
E5-2670 v3
i5-6400
Test#1 (Integers)
6006 points/GHz
6394 points/GHz
Test#2 (FP)
3385 points/GHz
5539 points/GHz
Test#3 (Generic, ZIP)
1303 points/GHz
1279 points/GHz
Test#1 (Memory)
1052 points/GHz
1348 points/GHz
TOTAL
11745 points/GHz
14560 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