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Core i5-6400 vs i7-3770K


Description
The i5-6400 is based on Skylake architecture while the i7-3770K 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 i7-3770K gets 133.9 k points.

Summarizing, the i5-6400 is 1 times faster than the i7-3770K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
306a9
Core
Skylake-S
Ivy Bridge
Architecture
Base frecuency
2.7 GHz
3.5 GHz
Boost frecuency
3.3 GHz
3.9 GHz
Socket
LGA 1151
LGA 1155
Cores/Threads
4/4
4/8
TDP
65 W
77 W
Cache L1 (d+i)
4x32+4x32 kB
4x62+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
8192 kB
Date
September 2015
April 2012
Mean monothread perf.
48.05k points
36.19k points
Mean multithread perf.
174.05k points
133.88k 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
i7-3770K
Test#1 (Integers)
3.2k
3.86k (x1.21)
Test#2 (FP)
12.81k
10.79k (x0.84)
Test#3 (Generic, ZIP)
4.18k
4.9k (x1.17)
Test#1 (Memory)
4.3k
5.51k (x1.28)
TOTAL
24.49k
25.06k (x1.02)

Multithread

i5-6400

i7-3770K
Test#1 (Integers)
11.45k
17.17k (x1.5)
Test#2 (FP)
46.67k
46.25k (x0.99)
Test#3 (Generic, ZIP)
14.69k
23.67k (x1.61)
Test#1 (Memory)
5.92k
10.36k (x1.75)
TOTAL
78.73k
97.44k (x1.24)

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
i7-3770K
Test#1 (Integers)
11.82k
12.99k (x1.1)
Test#2 (FP)
18.36k
12.42k (x0.68)
Test#3 (Generic, ZIP)
4.43k
5.04k (x1.14)
Test#1 (Memory)
4.95k
5.73k (x1.16)
TOTAL
39.56k
36.19k (x0.91)

Multithread

i5-6400

i7-3770K
Test#1 (Integers)
46.04k
50.36k (x1.09)
Test#2 (FP)
69.47k
55.16k (x0.79)
Test#3 (Generic, ZIP)
16.33k
23.31k (x1.43)
Test#1 (Memory)
7.74k
5.05k (x0.65)
TOTAL
139.58k
133.88k (x0.96)

Performance/W
i5-6400
i7-3770K
Test#1 (Integers)
708 points/W
654 points/W
Test#2 (FP)
1069 points/W
716 points/W
Test#3 (Generic, ZIP)
251 points/W
303 points/W
Test#1 (Memory)
119 points/W
66 points/W
TOTAL
2147 points/W
1739 points/W

Performance/GHz
i5-6400
i7-3770K
Test#1 (Integers)
3583 points/GHz
3331 points/GHz
Test#2 (FP)
5563 points/GHz
3186 points/GHz
Test#3 (Generic, ZIP)
1341 points/GHz
1292 points/GHz
Test#1 (Memory)
1500 points/GHz
1470 points/GHz
TOTAL
11987 points/GHz
9280 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