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Core i3-3120M vs i7-7020U


Description
The i3-3120M is based on Ivy Bridge architecture while the i7-7020U is based on Kaby Lake.

Using the multithread performance as a reference, the i3-3120M gets a score of 47.8 k points while the i7-7020U gets 60.1 k points.

Summarizing, the i7-7020U is 1.3 times faster than the i3-3120M . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306a9
806ea
Core
Kaby Lake-U
Architecture
Base frecuency
2.5 GHz
2.3 GHz
Socket
BGA1023
BGA 1356
Cores/Threads
2 /2
2/4
TDP
35 W
15 W
Cache L1 (d+i)
32+32 kB
2x32+2x32 kB
Cache L2
256 kB
2x256 kB
Cache L3
3072 kB
3072 kB
Date
September 2012
April 2018
Mean monothread perf.
22.12k points
33.63k points
Mean multithread perf.
47.78k points
73.15k 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
i3-3120M
i7-7020U
Test#1 (Integers)
7.92k
8.17k (x1.03)
Test#2 (FP)
7.96k
12.42k (x1.56)
Test#3 (Generic, ZIP)
3.09k
2.87k (x0.93)
Test#1 (Memory)
3.15k
4.68k (x1.49)
TOTAL
22.12k
28.13k (x1.27)

Multithread

i3-3120M

i7-7020U
Test#1 (Integers)
16.82k
17.65k (x1.05)
Test#2 (FP)
19k
30.44k (x1.6)
Test#3 (Generic, ZIP)
7.7k
7.19k (x0.93)
Test#1 (Memory)
4.25k
4.79k (x1.13)
TOTAL
47.78k
60.07k (x1.26)

Performance/W
i3-3120M
i7-7020U
Test#1 (Integers)
481 points/W
1177 points/W
Test#2 (FP)
543 points/W
2029 points/W
Test#3 (Generic, ZIP)
220 points/W
479 points/W
Test#1 (Memory)
121 points/W
320 points/W
TOTAL
1365 points/W
4005 points/W

Performance/GHz
i3-3120M
i7-7020U
Test#1 (Integers)
3169 points/GHz
3550 points/GHz
Test#2 (FP)
3182 points/GHz
5399 points/GHz
Test#3 (Generic, ZIP)
1236 points/GHz
1247 points/GHz
Test#1 (Memory)
1259 points/GHz
2035 points/GHz
TOTAL
8847 points/GHz
12231 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