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Core i3-2120 vs i7-6500U


Description
The i3-2120 is based on Sandy Bridge architecture while the i7-6500U is based on Skylake.

Using the multithread performance as a reference, the i3-2120 gets a score of 53.5 k points while the i7-6500U gets 78.7 k points.

Summarizing, the i7-6500U is 1.5 times faster than the i3-2120 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206a7
406e3
Core
Sandy Bridge
Skylake-U
Architecture
Base frecuency
3.3 GHz
2.5 GHz
Boost frecuency
3.3 GHz
3.1 GHz
Socket
LGA 1155
BGA1356
Cores/Threads
2/2
2/4
TDP
65 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
4096 kB
Cache L3
3072 kB
kB
Date
February 2012
September 2015
Mean monothread perf.
24.23k points
46.25k points
Mean multithread perf.
53.48k points
97.52k 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
i3-2120
i7-6500U
Test#1 (Integers)
2.7k
2.98k (x1.1)
Test#2 (FP)
7.4k
12.19k (x1.65)
Test#3 (Generic, ZIP)
3.82k
3.91k (x1.02)
Test#1 (Memory)
2.99k
5.3k (x1.77)
TOTAL
16.91k
24.37k (x1.44)

Multithread

i3-2120

i7-6500U
Test#1 (Integers)
6.36k
6.1k (x0.96)
Test#2 (FP)
16.87k
28.73k (x1.7)
Test#3 (Generic, ZIP)
9.4k
9.56k (x1.02)
Test#1 (Memory)
2.91k
6.71k (x2.31)
TOTAL
35.53k
51.09k (x1.44)

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
i3-2120
i7-6500U
Test#1 (Integers)
9.82k
11.11k (x1.13)
Test#2 (FP)
7.9k
15.97k (x2.02)
Test#3 (Generic, ZIP)
3.98k
4.25k (x1.07)
Test#1 (Memory)
2.95k
5.66k (x1.92)
TOTAL
24.64k
36.99k (x1.5)

Multithread

i3-2120

i7-6500U
Test#1 (Integers)
20.46k
23.1k (x1.13)
Test#2 (FP)
17.77k
36.73k (x2.07)
Test#3 (Generic, ZIP)
10.03k
9.99k (x1)
Test#1 (Memory)
2.94k
7k (x2.38)
TOTAL
51.21k
76.82k (x1.5)

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
i3-2120
i7-6500U
Test#1 (Integers)
9.07k
11.09k (x1.22)
Test#2 (FP)
8.25k
17.1k (x2.07)
Test#3 (Generic, ZIP)
3.99k
4.12k (x1.03)
Test#1 (Memory)
2.92k
5.58k (x1.91)
TOTAL
24.23k
37.9k (x1.56)

Multithread

i3-2120

i7-6500U
Test#1 (Integers)
20.86k
23.3k (x1.12)
Test#2 (FP)
19.51k
38.52k (x1.97)
Test#3 (Generic, ZIP)
10.09k
9.95k (x0.99)
Test#1 (Memory)
3.03k
6.95k (x2.29)
TOTAL
53.48k
78.72k (x1.47)

Performance/W
i3-2120
i7-6500U
Test#1 (Integers)
321 points/W
1553 points/W
Test#2 (FP)
300 points/W
2568 points/W
Test#3 (Generic, ZIP)
155 points/W
663 points/W
Test#1 (Memory)
47 points/W
463 points/W
TOTAL
823 points/W
5248 points/W

Performance/GHz
i3-2120
i7-6500U
Test#1 (Integers)
2748 points/GHz
3579 points/GHz
Test#2 (FP)
2499 points/GHz
5516 points/GHz
Test#3 (Generic, ZIP)
1210 points/GHz
1330 points/GHz
Test#1 (Memory)
886 points/GHz
1801 points/GHz
TOTAL
7343 points/GHz
12225 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