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Core i7-6600U vs i3-5005U


Description
The i7-6600U is based on Skylake architecture while the i3-5005U is based on Broadwell.

Using the multithread performance as a reference, the i7-6600U gets a score of 79.2 k points while the i3-5005U gets 55 k points.

Summarizing, the i7-6600U is 1.4 times faster than the i3-5005U . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
306d4
Core
Skylake-U
Broadwell-U
Architecture
Base frecuency
2.6 GHz
2 GHz
Boost frecuency
3.4 GHz
2 GHz
Socket
BGA1356
Cores/Threads
2/4
2 /2
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
256 kB
Cache L3
4096 kB
3072 kB
Date
September 2015
March 2015
Mean monothread perf.
39.73k points
25.61k points
Mean multithread perf.
79.22k points
54.99k 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
i7-6600U
i3-5005U
Test#1 (Integers)
8.49k
6.24k (x0.73)
Test#2 (FP)
10.92k
8.82k (x0.81)
Test#3 (Generic, ZIP)
2.76k
2.38k (x0.86)
Test#1 (Memory)
4.93k
2.4k (x0.49)
TOTAL
27.1k
19.84k (x0.73)

Multithread

i7-6600U

i3-5005U
Test#1 (Integers)
14.11k
12.33k (x0.87)
Test#2 (FP)
20.05k
25.82k (x1.29)
Test#3 (Generic, ZIP)
6.17k
6.56k (x1.06)
Test#1 (Memory)
4.73k
3.18k (x0.67)
TOTAL
45.05k
47.89k (x1.06)

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
i3-5005U
Test#1 (Integers)
16.72k
11.08k (x0.66)
Test#2 (FP)
14.7k
9.5k (x0.65)
Test#3 (Generic, ZIP)
3.4k
2.51k (x0.74)
Test#1 (Memory)
4.9k
2.52k (x0.51)
TOTAL
39.73k
25.61k (x0.64)

Multithread

i7-6600U

i3-5005U
Test#1 (Integers)
33.41k
23.11k (x0.69)
Test#2 (FP)
31.66k
22.79k (x0.72)
Test#3 (Generic, ZIP)
8.18k
6.06k (x0.74)
Test#1 (Memory)
5.97k
3.03k (x0.51)
TOTAL
79.22k
54.99k (x0.69)

Performance/W
i7-6600U
i3-5005U
Test#1 (Integers)
2227 points/W
1541 points/W
Test#2 (FP)
2111 points/W
1519 points/W
Test#3 (Generic, ZIP)
546 points/W
404 points/W
Test#1 (Memory)
398 points/W
202 points/W
TOTAL
5282 points/W
3666 points/W

Performance/GHz
i7-6600U
i3-5005U
Test#1 (Integers)
4919 points/GHz
5541 points/GHz
Test#2 (FP)
4325 points/GHz
4749 points/GHz
Test#3 (Generic, ZIP)
999 points/GHz
1255 points/GHz
Test#1 (Memory)
1441 points/GHz
1259 points/GHz
TOTAL
11684 points/GHz
12804 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