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Core i3-2120 vs i7-6600U


Description
The i3-2120 is based on Sandy Bridge architecture while the i7-6600U is based on Skylake.

Using the multithread performance as a reference, the i3-2120 gets a score of 53.5 k points while the i7-6600U gets 45.1 k points.

Summarizing, the i3-2120 is 1.2 times faster than the i7-6600U. 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
2.6 GHz
Boost frecuency
3.3 GHz
3.4 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
2x256 kB
Cache L3
3072 kB
4096 kB
Date
February 2012
September 2015
Mean monothread perf.
24.23k points
39.73k points
Mean multithread perf.
53.48k points
79.22k 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
i7-6600U
Test#1 (Integers)
2.7k
2.75k (x1.02)
Test#2 (FP)
7.4k
12.23k (x1.65)
Test#3 (Generic, ZIP)
3.82k
3.9k (x1.02)
Test#1 (Memory)
2.99k
5.61k (x1.88)
TOTAL
16.91k
24.48k (x1.45)

Multithread

i3-2120

i7-6600U
Test#1 (Integers)
6.36k
5.23k (x0.82)
Test#2 (FP)
16.87k
25k (x1.48)
Test#3 (Generic, ZIP)
9.4k
8.98k (x0.96)
Test#1 (Memory)
2.91k
4.73k (x1.63)
TOTAL
35.53k
43.95k (x1.24)

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
i7-6600U
Test#1 (Integers)
9.82k
6.76k (x0.69)
Test#2 (FP)
7.9k
9.58k (x1.21)
Test#3 (Generic, ZIP)
3.98k
2.46k (x0.62)
Test#1 (Memory)
2.95k
4.18k (x1.42)
TOTAL
24.64k
22.99k (x0.93)

Multithread

i3-2120

i7-6600U
Test#1 (Integers)
20.46k
14.37k (x0.7)
Test#2 (FP)
17.77k
23.79k (x1.34)
Test#3 (Generic, ZIP)
10.03k
5.71k (x0.57)
Test#1 (Memory)
2.94k
4.29k (x1.46)
TOTAL
51.21k
48.16k (x0.94)

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
i7-6600U
Test#1 (Integers)
9.07k
8.49k (x0.94)
Test#2 (FP)
8.25k
10.92k (x1.32)
Test#3 (Generic, ZIP)
3.99k
2.76k (x0.69)
Test#1 (Memory)
2.92k
4.93k (x1.68)
TOTAL
24.23k
27.1k (x1.12)

Multithread

i3-2120

i7-6600U
Test#1 (Integers)
20.86k
14.11k (x0.68)
Test#2 (FP)
19.51k
20.05k (x1.03)
Test#3 (Generic, ZIP)
10.09k
6.17k (x0.61)
Test#1 (Memory)
3.03k
4.73k (x1.56)
TOTAL
53.48k
45.05k (x0.84)

Performance/W
i3-2120
i7-6600U
Test#1 (Integers)
321 points/W
940 points/W
Test#2 (FP)
300 points/W
1337 points/W
Test#3 (Generic, ZIP)
155 points/W
411 points/W
Test#1 (Memory)
47 points/W
315 points/W
TOTAL
823 points/W
3004 points/W

Performance/GHz
i3-2120
i7-6600U
Test#1 (Integers)
2748 points/GHz
2497 points/GHz
Test#2 (FP)
2499 points/GHz
3211 points/GHz
Test#3 (Generic, ZIP)
1210 points/GHz
813 points/GHz
Test#1 (Memory)
886 points/GHz
1449 points/GHz
TOTAL
7343 points/GHz
7970 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