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Core i3-6100U vs i3-2120


Description
The i3-6100U is based on Skylake architecture while the i3-2120 is based on Sandy Bridge.

Using the multithread performance as a reference, the i3-6100U gets a score of 56.7 k points while the i3-2120 gets 53.5 k points.

Summarizing, the i3-6100U is 1.1 times faster than the i3-2120 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
206a7
Core
Skylake-U
Sandy Bridge
Architecture
Base frecuency
2.3 GHz
3.3 GHz
Socket
BGA1356
LGA 1155
Cores/Threads
2/4
2/2
TDP
15 W
65 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
2x256 kB
Cache L3
3072 kB
3072 kB
Date
September 2015
February 2012
Mean monothread perf.
30.73k points
24.23k points
Mean multithread perf.
69.94k points
53.48k 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
i3-6100U
i3-2120
Test#1 (Integers)
2.27k
2.7k (x1.19)
Test#2 (FP)
9.18k
7.4k (x0.81)
Test#3 (Generic, ZIP)
2.97k
3.82k (x1.28)
Test#1 (Memory)
3.79k
2.99k (x0.79)
TOTAL
18.21k
16.91k (x0.93)

Multithread

i3-6100U

i3-2120
Test#1 (Integers)
4.79k
6.36k (x1.33)
Test#2 (FP)
23.04k
16.87k (x0.73)
Test#3 (Generic, ZIP)
7.55k
9.4k (x1.25)
Test#1 (Memory)
3.86k
2.91k (x0.75)
TOTAL
39.24k
35.53k (x0.91)

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
i3-6100U
i3-2120
Test#1 (Integers)
7.99k
9.82k (x1.23)
Test#2 (FP)
11.82k
7.9k (x0.67)
Test#3 (Generic, ZIP)
2.97k
3.98k (x1.34)
Test#1 (Memory)
3.75k
2.95k (x0.79)
TOTAL
26.52k
24.64k (x0.93)

Multithread

i3-6100U

i3-2120
Test#1 (Integers)
15.44k
20.46k (x1.33)
Test#2 (FP)
23.79k
17.77k (x0.75)
Test#3 (Generic, ZIP)
6.93k
10.03k (x1.45)
Test#1 (Memory)
4.03k
2.94k (x0.73)
TOTAL
50.19k
51.21k (x1.02)

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
i3-6100U
i3-2120
Test#1 (Integers)
8.06k
9.07k (x1.12)
Test#2 (FP)
12.85k
8.25k (x0.64)
Test#3 (Generic, ZIP)
3.14k
3.99k (x1.27)
Test#1 (Memory)
4.01k
2.92k (x0.73)
TOTAL
28.06k
24.23k (x0.86)

Multithread

i3-6100U

i3-2120
Test#1 (Integers)
16.58k
20.86k (x1.26)
Test#2 (FP)
28.88k
19.51k (x0.68)
Test#3 (Generic, ZIP)
7.38k
10.09k (x1.37)
Test#1 (Memory)
3.82k
3.03k (x0.79)
TOTAL
56.66k
53.48k (x0.94)

Performance/W
i3-6100U
i3-2120
Test#1 (Integers)
1105 points/W
321 points/W
Test#2 (FP)
1925 points/W
300 points/W
Test#3 (Generic, ZIP)
492 points/W
155 points/W
Test#1 (Memory)
254 points/W
47 points/W
TOTAL
3777 points/W
823 points/W

Performance/GHz
i3-6100U
i3-2120
Test#1 (Integers)
3506 points/GHz
2748 points/GHz
Test#2 (FP)
5587 points/GHz
2499 points/GHz
Test#3 (Generic, ZIP)
1366 points/GHz
1210 points/GHz
Test#1 (Memory)
1742 points/GHz
886 points/GHz
TOTAL
12201 points/GHz
7343 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