Core i5-6400 vs i5-2300

Description

The i5-6400 is based on Skylake architecture while the i5-2300 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 i5-2300 gets 79.5 k points.

Summarizing, the i5-6400 is 1.8 times faster than the i5-2300 . To get a proper comparison between both models, take a look to the data shown below.

Specs

i5-6400

i5-2300

CPUID

506e3

206a7

Core

Skylake-S

Sandy Bridge

Architecture

Skylake

Sandy Bridge

Base frecuency

2.7 GHz

2.8 GHz

Boost frecuency

3.3 GHz

3.1 GHz

Socket

LGA 1151

LGA 1155

Cores/Threads

4/4

TDP

65 W

95 W

Cache L1 (d+i)

4x32+4x32 kB

Cache L2

4x256 kB

Cache L3

6144 kB

Date

September 2015

May 2011

Mean monothread perf.

48.05k points

24.53k points

Mean multithread perf.

174.05k points

79.46k 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

i5-6400

i5-2300

Test#1 (Integers)

3.2k

2.52k (x0.79)

Test#2 (FP)

12.81k

7.01k (x0.55)

Test#3 (Generic, ZIP)

4.18k

3.77k (x0.9)

Test#1 (Memory)

4.3k

4.22k (x0.98)

TOTAL

24.49k

17.53k (x0.72)

Multithread

i5-6400

i5-2300

Test#1 (Integers)

11.45k

9.46k (x0.83)

Test#2 (FP)

46.67k

26.25k (x0.56)

Test#3 (Generic, ZIP)

14.69k

14.1k (x0.96)

Test#1 (Memory)

5.92k

3.13k (x0.53)

TOTAL

78.73k

52.93k (x0.67)

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

i5-2300

Test#1 (Integers)

11.82k

8.65k (x0.73)

Test#2 (FP)

18.36k

7.8k (x0.42)

Test#3 (Generic, ZIP)

4.43k

3.92k (x0.88)

Test#1 (Memory)

4.95k

4.16k (x0.84)

TOTAL

39.56k

24.53k (x0.62)

Multithread

i5-6400

i5-2300

Test#1 (Integers)

46.04k

32.45k (x0.7)

Test#2 (FP)

69.47k

29.25k (x0.42)

Test#3 (Generic, ZIP)

16.33k

14.64k (x0.9)

Test#1 (Memory)

7.74k

3.12k (x0.4)

TOTAL

139.58k

79.46k (x0.57)

Performance/W

i5-6400

i5-2300

Test#1 (Integers)

708 points/W

342 points/W

Test#2 (FP)

1069 points/W

308 points/W

Test#3 (Generic, ZIP)

251 points/W

154 points/W

Test#1 (Memory)

119 points/W

33 points/W

TOTAL

2147 points/W

836 points/W

Performance/GHz

i5-6400

i5-2300

Test#1 (Integers)

3583 points/GHz

2791 points/GHz

Test#2 (FP)

5563 points/GHz

2516 points/GHz

Test#3 (Generic, ZIP)

1341 points/GHz

1263 points/GHz

Test#1 (Memory)

1500 points/GHz

1343 points/GHz

TOTAL

11987 points/GHz

7912 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]

Test#2 (FP) [points vs time]

Test#3 (Generic, ZIP) [points vs time]

Test#1 (Memory) [points vs time]

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]

Test#2 (FP) [points vs time]

Test#3 (Generic, ZIP) [points vs time]

Test#1 (Memory) [points vs time]

Hardlimit Benchmark Central - Ver. 3.11.4