Core i5-6400 vs Xeon E5-2651 v2
Description
The i5-6400 is based on Skylake architecture while the E5-2651 v2 is based on Ivy Bridge.
Using the multithread performance as a reference, the i5-6400 gets a score of 139.6 k points while the E5-2651 v2 gets 426.2 k points.
Summarizing, the E5-2651 v2 is 3.1 times faster than the i5-6400 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i5-6400 gets a score of 139.6 k points while the E5-2651 v2 gets 426.2 k points.
Summarizing, the E5-2651 v2 is 3.1 times faster than the i5-6400 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
506e3
306e4
Core
Skylake-S
Ivy Bridge-EP
Base frecuency
2.7 GHz
1.8 GHz
Boost frecuency
3.3 GHz
2.2 GHz
Socket
LGA 1151
LGA 2011
Cores/Threads
4/4
12/24
TDP
65 W
W
Cache L1 (d+i)
4x32+4x32 kB
12x32+12x32 kB
Cache L2
4x256 kB
12x256 kB
Cache L3
6144 kB
30720 kB
Date
September 2015
October 2013
Mean monothread perf.
48.05k points
17.75k points
Mean multithread perf.
174.05k points
426.18k points
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
i5-6400
E5-2651 v2
Test#1 (Integers)
11.56k
6.75k (x0.58)
Test#2 (FP)
16.53k
6.05k (x0.37)
Test#3 (Generic, ZIP)
4.3k
2.61k (x0.61)
Test#1 (Memory)
3.97k
2.26k (x0.57)
TOTAL
36.36k
17.68k (x0.49)
Multithread
i5-6400
E5-2651 v2
Test#1 (Integers)
43.01k
168.18k (x3.91)
Test#2 (FP)
64.46k
159.6k (x2.48)
Test#3 (Generic, ZIP)
16.14k
77.04k (x4.77)
Test#1 (Memory)
5.91k
10.19k (x1.73)
TOTAL
129.51k
415.01k (x3.2)
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
i5-6400
E5-2651 v2
Test#1 (Integers)
11.82k
6.69k (x0.57)
Test#2 (FP)
18.36k
6.35k (x0.35)
Test#3 (Generic, ZIP)
4.43k
2.54k (x0.57)
Test#1 (Memory)
4.95k
2.17k (x0.44)
TOTAL
39.56k
17.75k (x0.45)
Multithread
i5-6400
E5-2651 v2
Test#1 (Integers)
46.04k
165.17k (x3.59)
Test#2 (FP)
69.47k
176.85k (x2.55)
Test#3 (Generic, ZIP)
16.33k
73.91k (x4.53)
Test#1 (Memory)
7.74k
10.25k (x1.32)
TOTAL
139.58k
426.18k (x3.05)
Performance/W
i5-6400
E5-2651 v2
Test#1 (Integers)
708 points/W