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Core i3-1005G1 vs i7-6820HQ


Description
The i3-1005G1 is based on Ice Lake architecture while the i7-6820HQ is based on Skylake.

Using the multithread performance as a reference, the i3-1005G1 gets a score of 116.6 k points while the i7-6820HQ gets 205.9 k points.

Summarizing, the i7-6820HQ is 1.8 times faster than the i3-1005G1. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
706e5
506e3
Core
Ice Lake-U
Skylake-H
Architecture
Base frecuency
1.2 GHz
2.7 GHz
Boost frecuency
3.4 GHz
3.6 GHz
Socket
BGA 1526
BGA1440
Cores/Threads
2/4
4/8
TDP
15 W
45 W
Cache L1 (d+i)
2x32+2x48 kB
4x32+4x32 kB
Cache L2
2x512 kB
4x256 kB
Cache L3
4096 kB
8192 kB
Date
August 2019
October 2015
Mean monothread perf.
50.62k points
50.1k points
Mean multithread perf.
116.63k points
205.89k 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
i3-1005G1
i7-6820HQ
Test#1 (Integers)
3.07k
3.18k (x1.04)
Test#2 (FP)
13.76k
13.02k (x0.95)
Test#3 (Generic, ZIP)
8k
4.17k (x0.52)
Test#1 (Memory)
6.59k
6.93k (x1.05)
TOTAL
31.42k
27.3k (x0.87)

Multithread

i3-1005G1

i7-6820HQ
Test#1 (Integers)
8k
13.26k (x1.66)
Test#2 (FP)
35.53k
62.23k (x1.75)
Test#3 (Generic, ZIP)
18.53k
20.34k (x1.1)
Test#1 (Memory)
4.3k
5.46k (x1.27)
TOTAL
66.36k
101.29k (x1.53)

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
i3-1005G1
i7-6820HQ
Test#1 (Integers)
10.52k
11.54k (x1.1)
Test#2 (FP)
17.6k
16.69k (x0.95)
Test#3 (Generic, ZIP)
8.76k
4.51k (x0.52)
Test#1 (Memory)
6.55k
7.27k (x1.11)
TOTAL
43.44k
40.01k (x0.92)

Multithread

i3-1005G1

i7-6820HQ
Test#1 (Integers)
26.86k
48.5k (x1.81)
Test#2 (FP)
42.38k
77.02k (x1.82)
Test#3 (Generic, ZIP)
20.65k
21.3k (x1.03)
Test#1 (Memory)
4.21k
5.24k (x1.25)
TOTAL
94.1k
152.06k (x1.62)

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
i3-1005G1
i7-6820HQ
Test#1 (Integers)
11.93k
11.78k (x0.99)
Test#2 (FP)
16.99k
18.06k (x1.06)
Test#3 (Generic, ZIP)
6.43k
4.48k (x0.7)
Test#1 (Memory)
4.59k
7.12k (x1.55)
TOTAL
39.93k
41.44k (x1.04)

Multithread

i3-1005G1

i7-6820HQ
Test#1 (Integers)
29.07k
49.46k (x1.7)
Test#2 (FP)
46.14k
84.8k (x1.84)
Test#3 (Generic, ZIP)
19.47k
20.7k (x1.06)
Test#1 (Memory)
4.18k
4.77k (x1.14)
TOTAL
98.86k
159.73k (x1.62)

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
i3-1005G1
i7-6820HQ
Test#1 (Integers)
19.45k
20.99k (x1.08)
Test#2 (FP)
16.75k
18.63k (x1.11)
Test#3 (Generic, ZIP)
8.04k
4.33k (x0.54)
Test#1 (Memory)
6.38k
6.15k (x0.96)
TOTAL
50.62k
50.1k (x0.99)

Multithread

i3-1005G1

i7-6820HQ
Test#1 (Integers)
46.52k
91.8k (x1.97)
Test#2 (FP)
48.76k
87.24k (x1.79)
Test#3 (Generic, ZIP)
17.12k
20.55k (x1.2)
Test#1 (Memory)
4.23k
6.3k (x1.49)
TOTAL
116.63k
205.89k (x1.77)

Performance/W
i3-1005G1
i7-6820HQ
Test#1 (Integers)
3102 points/W
2040 points/W
Test#2 (FP)
3251 points/W
1939 points/W
Test#3 (Generic, ZIP)
1141 points/W
457 points/W
Test#1 (Memory)
282 points/W
140 points/W
TOTAL
7776 points/W
4575 points/W

Performance/GHz
i3-1005G1
i7-6820HQ
Test#1 (Integers)
5721 points/GHz
5831 points/GHz
Test#2 (FP)
4926 points/GHz
5174 points/GHz
Test#3 (Generic, ZIP)
2365 points/GHz
1204 points/GHz
Test#1 (Memory)
1877 points/GHz
1708 points/GHz
TOTAL
14889 points/GHz
13917 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