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Core i3-5005U vs i7-6600U


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

Using the multithread performance as a reference, the i3-5005U gets a score of 55 k points while the i7-6600U gets 79.2 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
306d4
406e3
Core
Broadwell-U
Skylake-U
Architecture
Base frecuency
2 GHz
2.6 GHz
Boost frecuency
2 GHz
3.4 GHz
Socket
BGA1356
Cores/Threads
2 /2
2/4
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
256 kB
2x256 kB
Cache L3
3072 kB
4096 kB
Date
March 2015
September 2015
Mean monothread perf.
25.61k points
39.73k points
Mean multithread perf.
54.99k points
79.22k 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
i3-5005U
i7-6600U
Test#1 (Integers)
6.24k
8.49k (x1.36)
Test#2 (FP)
8.82k
10.92k (x1.24)
Test#3 (Generic, ZIP)
2.38k
2.76k (x1.16)
Test#1 (Memory)
2.4k
4.93k (x2.05)
TOTAL
19.84k
27.1k (x1.37)

Multithread

i3-5005U

i7-6600U
Test#1 (Integers)
12.33k
14.11k (x1.14)
Test#2 (FP)
25.82k
20.05k (x0.78)
Test#3 (Generic, ZIP)
6.56k
6.17k (x0.94)
Test#1 (Memory)
3.18k
4.73k (x1.48)
TOTAL
47.89k
45.05k (x0.94)

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
i3-5005U
i7-6600U
Test#1 (Integers)
11.08k
16.72k (x1.51)
Test#2 (FP)
9.5k
14.7k (x1.55)
Test#3 (Generic, ZIP)
2.51k
3.4k (x1.35)
Test#1 (Memory)
2.52k
4.9k (x1.95)
TOTAL
25.61k
39.73k (x1.55)

Multithread

i3-5005U

i7-6600U
Test#1 (Integers)
23.11k
33.41k (x1.45)
Test#2 (FP)
22.79k
31.66k (x1.39)
Test#3 (Generic, ZIP)
6.06k
8.18k (x1.35)
Test#1 (Memory)
3.03k
5.97k (x1.97)
TOTAL
54.99k
79.22k (x1.44)

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

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