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Core i5-6400 vs i5-2500


Description
The i5-6400 is based on Skylake architecture while the i5-2500 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 i5-2500 gets 86.9 k points.

Summarizing, the i5-6400 is 1.6 times faster than the i5-2500 . 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
3.3 GHz
Boost frecuency
3.3 GHz
3.7 GHz
Socket
LGA 1151
LGA 1155
Cores/Threads
4/4
4/4
TDP
65 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+x4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
6144 kB
Date
September 2015
January 2011
Mean monothread perf.
48.05k points
27.61k points
Mean multithread perf.
174.05k points
86.86k 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
i5-2500
Test#1 (Integers)
11.82k
9.92k (x0.84)
Test#2 (FP)
18.36k
8.8k (x0.48)
Test#3 (Generic, ZIP)
4.43k
4.27k (x0.96)
Test#1 (Memory)
4.95k
4.62k (x0.93)
TOTAL
39.56k
27.61k (x0.7)

Multithread

i5-6400

i5-2500
Test#1 (Integers)
46.04k
35.79k (x0.78)
Test#2 (FP)
69.47k
31.77k (x0.46)
Test#3 (Generic, ZIP)
16.33k
15.5k (x0.95)
Test#1 (Memory)
7.74k
3.8k (x0.49)
TOTAL
139.58k
86.86k (x0.62)

Performance/W
i5-6400
i5-2500
Test#1 (Integers)
708 points/W
377 points/W
Test#2 (FP)
1069 points/W
334 points/W
Test#3 (Generic, ZIP)
251 points/W
163 points/W
Test#1 (Memory)
119 points/W
40 points/W
TOTAL
2147 points/W
914 points/W

Performance/GHz
i5-6400
i5-2500
Test#1 (Integers)
3583 points/GHz
2682 points/GHz
Test#2 (FP)
5563 points/GHz
2377 points/GHz
Test#3 (Generic, ZIP)
1341 points/GHz
1153 points/GHz
Test#1 (Memory)
1500 points/GHz
1248 points/GHz
TOTAL
11987 points/GHz
7461 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