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Core i7-6600U vs i3-1005G1


Description
The i7-6600U is based on Skylake architecture while the i3-1005G1 is based on Ice Lake.

Using the multithread performance as a reference, the i7-6600U gets a score of 79.2 k points while the i3-1005G1 gets 116.6 k points.

Summarizing, the i3-1005G1 is 1.5 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
706e5
Core
Skylake-U
Ice Lake-U
Architecture
Base frecuency
2.6 GHz
1.2 GHz
Boost frecuency
3.4 GHz
3.4 GHz
Socket
BGA1356
BGA 1526
Cores/Threads
2/4
2/4
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x48 kB
Cache L2
2x256 kB
2x512 kB
Cache L3
4096 kB
4096 kB
Date
September 2015
August 2019
Mean monothread perf.
39.73k points
50.62k points
Mean multithread perf.
79.22k points
116.63k 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
i3-1005G1
Test#1 (Integers)
2.75k
3.07k (x1.12)
Test#2 (FP)
12.23k
13.76k (x1.13)
Test#3 (Generic, ZIP)
3.9k
8k (x2.05)
Test#1 (Memory)
5.61k
6.59k (x1.17)
TOTAL
24.48k
31.42k (x1.28)

Multithread

i7-6600U

i3-1005G1
Test#1 (Integers)
5.23k
8k (x1.53)
Test#2 (FP)
25k
35.53k (x1.42)
Test#3 (Generic, ZIP)
8.98k
18.53k (x2.06)
Test#1 (Memory)
4.73k
4.3k (x0.91)
TOTAL
43.95k
66.36k (x1.51)

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
i3-1005G1
Test#1 (Integers)
6.76k
10.52k (x1.56)
Test#2 (FP)
9.58k
17.6k (x1.84)
Test#3 (Generic, ZIP)
2.46k
8.76k (x3.56)
Test#1 (Memory)
4.18k
6.55k (x1.57)
TOTAL
22.99k
43.44k (x1.89)

Multithread

i7-6600U

i3-1005G1
Test#1 (Integers)
14.37k
26.86k (x1.87)
Test#2 (FP)
23.79k
42.38k (x1.78)
Test#3 (Generic, ZIP)
5.71k
20.65k (x3.62)
Test#1 (Memory)
4.29k
4.21k (x0.98)
TOTAL
48.16k
94.1k (x1.95)

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
i3-1005G1
Test#1 (Integers)
8.49k
11.93k (x1.41)
Test#2 (FP)
10.92k
16.99k (x1.56)
Test#3 (Generic, ZIP)
2.76k
6.43k (x2.33)
Test#1 (Memory)
4.93k
4.59k (x0.93)
TOTAL
27.1k
39.93k (x1.47)

Multithread

i7-6600U

i3-1005G1
Test#1 (Integers)
14.11k
29.07k (x2.06)
Test#2 (FP)
20.05k
46.14k (x2.3)
Test#3 (Generic, ZIP)
6.17k
19.47k (x3.16)
Test#1 (Memory)
4.73k
4.18k (x0.89)
TOTAL
45.05k
98.86k (x2.19)

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
i3-1005G1
Test#1 (Integers)
16.72k
19.45k (x1.16)
Test#2 (FP)
14.7k
16.75k (x1.14)
Test#3 (Generic, ZIP)
3.4k
8.04k (x2.37)
Test#1 (Memory)
4.9k
6.38k (x1.3)
TOTAL
39.73k
50.62k (x1.27)

Multithread

i7-6600U

i3-1005G1
Test#1 (Integers)
33.41k
46.52k (x1.39)
Test#2 (FP)
31.66k
48.76k (x1.54)
Test#3 (Generic, ZIP)
8.18k
17.12k (x2.09)
Test#1 (Memory)
5.97k
4.23k (x0.71)
TOTAL
79.22k
116.63k (x1.47)

Performance/W
i7-6600U
i3-1005G1
Test#1 (Integers)
2227 points/W
3102 points/W
Test#2 (FP)
2111 points/W
3251 points/W
Test#3 (Generic, ZIP)
546 points/W
1141 points/W
Test#1 (Memory)
398 points/W
282 points/W
TOTAL
5282 points/W
7776 points/W

Performance/GHz
i7-6600U
i3-1005G1
Test#1 (Integers)
4919 points/GHz
5721 points/GHz
Test#2 (FP)
4325 points/GHz
4926 points/GHz
Test#3 (Generic, ZIP)
999 points/GHz
2365 points/GHz
Test#1 (Memory)
1441 points/GHz
1877 points/GHz
TOTAL
11684 points/GHz
14889 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