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Core i7-6600U vs i5-4440


Description
The i7-6600U is based on Skylake architecture while the i5-4440 is based on Haswell.

Using the multithread performance as a reference, the i7-6600U gets a score of 79.2 k points while the i5-4440 gets 138.7 k points.

Summarizing, the i5-4440 is 1.8 times faster than the i7-6600U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
306c3
Core
Skylake-U
Haswell
Architecture
Base frecuency
2.6 GHz
3.1 GHz
Boost frecuency
3.4 GHz
3.3 GHz
Socket
BGA1356
LGA 1150
Cores/Threads
2/4
4/4
TDP
15 W
84 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
4096 kB
6144 kB
Date
September 2015
June 2013
Mean monothread perf.
39.73k points
38.29k points
Mean multithread perf.
79.22k points
138.69k 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
i7-6600U
i5-4440
Test#1 (Integers)
2.75k
3.71k (x1.35)
Test#2 (FP)
12.23k
9.23k (x0.75)
Test#3 (Generic, ZIP)
3.9k
4.28k (x1.1)
Test#1 (Memory)
5.61k
3.8k (x0.68)
TOTAL
24.48k
21.02k (x0.86)

Multithread

i7-6600U

i5-4440
Test#1 (Integers)
5.23k
13.33k (x2.55)
Test#2 (FP)
25k
34.2k (x1.37)
Test#3 (Generic, ZIP)
8.98k
15.91k (x1.77)
Test#1 (Memory)
4.73k
6.56k (x1.39)
TOTAL
43.95k
70k (x1.59)

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
i7-6600U
i5-4440
Test#1 (Integers)
6.76k
11.43k (x1.69)
Test#2 (FP)
9.58k
10.13k (x1.06)
Test#3 (Generic, ZIP)
2.46k
4.53k (x1.84)
Test#1 (Memory)
4.18k
3.93k (x0.94)
TOTAL
22.99k
30.01k (x1.31)

Multithread

i7-6600U

i5-4440
Test#1 (Integers)
14.37k
43.67k (x3.04)
Test#2 (FP)
23.79k
38.78k (x1.63)
Test#3 (Generic, ZIP)
5.71k
17.03k (x2.98)
Test#1 (Memory)
4.29k
7.72k (x1.8)
TOTAL
48.16k
107.2k (x2.23)

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
i7-6600U
i5-4440
Test#1 (Integers)
8.49k
11.56k (x1.36)
Test#2 (FP)
10.92k
10.36k (x0.95)
Test#3 (Generic, ZIP)
2.76k
4.45k (x1.61)
Test#1 (Memory)
4.93k
3.8k (x0.77)
TOTAL
27.1k
30.17k (x1.11)

Multithread

i7-6600U

i5-4440
Test#1 (Integers)
14.11k
44.07k (x3.12)
Test#2 (FP)
20.05k
41.07k (x2.05)
Test#3 (Generic, ZIP)
6.17k
16.89k (x2.74)
Test#1 (Memory)
4.73k
7.33k (x1.55)
TOTAL
45.05k
109.35k (x2.43)

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-6600U
i5-4440
Test#1 (Integers)
16.72k
19.08k (x1.14)
Test#2 (FP)
14.7k
10.47k (x0.71)
Test#3 (Generic, ZIP)
3.4k
4.53k (x1.33)
Test#1 (Memory)
4.9k
4.21k (x0.86)
TOTAL
39.73k
38.29k (x0.96)

Multithread

i7-6600U

i5-4440
Test#1 (Integers)
33.41k
73.26k (x2.19)
Test#2 (FP)
31.66k
41.01k (x1.3)
Test#3 (Generic, ZIP)
8.18k
17.12k (x2.09)
Test#1 (Memory)
5.97k
7.3k (x1.22)
TOTAL
79.22k
138.69k (x1.75)

Performance/W
i7-6600U
i5-4440
Test#1 (Integers)
2227 points/W
872 points/W
Test#2 (FP)
2111 points/W
488 points/W
Test#3 (Generic, ZIP)
546 points/W
204 points/W
Test#1 (Memory)
398 points/W
87 points/W
TOTAL
5282 points/W
1651 points/W

Performance/GHz
i7-6600U
i5-4440
Test#1 (Integers)
4919 points/GHz
5783 points/GHz
Test#2 (FP)
4325 points/GHz
3174 points/GHz
Test#3 (Generic, ZIP)
999 points/GHz
1372 points/GHz
Test#1 (Memory)
1441 points/GHz
1275 points/GHz
TOTAL
11684 points/GHz
11604 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