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Core i5-6400 vs i7-2600


Description
The i5-6400 is based on Skylake architecture while the i7-2600 is based on Sandy Bridge.

Using the multithread performance as a reference, the i5-6400 gets a score of 139.6 k points while the i7-2600 gets 93.7 k points.

Summarizing, the i5-6400 is 1.5 times faster than the i7-2600 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
206a7
Core
Skylake-S
Sandy Bridge
Architecture
Base frecuency
2.7 GHz
3.4 GHz
Boost frecuency
3.3 GHz
3.8 GHz
Socket
LGA 1151
LGA 1155
Cores/Threads
4/4
4/8
TDP
65 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
8192 kB
Date
September 2015
June 2011
Mean monothread perf.
48.05k points
28.68k points
Mean multithread perf.
174.05k points
93.69k points

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
i7-2600
Test#1 (Integers)
11.82k
10.03k (x0.85)
Test#2 (FP)
18.36k
8.91k (x0.49)
Test#3 (Generic, ZIP)
4.43k
4.34k (x0.98)
Test#1 (Memory)
4.95k
5.41k (x1.09)
TOTAL
39.56k
28.68k (x0.73)

Multithread

i5-6400

i7-2600
Test#1 (Integers)
46.04k
37.69k (x0.82)
Test#2 (FP)
69.47k
34.22k (x0.49)
Test#3 (Generic, ZIP)
16.33k
17.65k (x1.08)
Test#1 (Memory)
7.74k
4.13k (x0.53)
TOTAL
139.58k
93.69k (x0.67)

Performance/W
i5-6400
i7-2600
Test#1 (Integers)
708 points/W
397 points/W
Test#2 (FP)
1069 points/W
360 points/W
Test#3 (Generic, ZIP)
251 points/W
186 points/W
Test#1 (Memory)
119 points/W
43 points/W
TOTAL
2147 points/W
986 points/W

Performance/GHz
i5-6400
i7-2600
Test#1 (Integers)
3583 points/GHz
2639 points/GHz
Test#2 (FP)
5563 points/GHz
2343 points/GHz
Test#3 (Generic, ZIP)
1341 points/GHz
1141 points/GHz
Test#1 (Memory)
1500 points/GHz
1425 points/GHz
TOTAL
11987 points/GHz
7549 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