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Pentium G645 vs Celeron N4020


Description
The G645 is based on Sandy Bridge architecture while the N4020 is based on Goldmont Plus.

Using the multithread performance as a reference, the G645 gets a score of 35.4 k points while the N4020 gets 25.3 k points.

Summarizing, the G645 is 1.4 times faster than the N4020. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206a7
706a8
Core
Sandy Bridge
Gemini Lake
Base frecuency
2.9 GHz
1.1 GHz
Boost frecuency
2.9 GHz
2.8 GHz
Socket
LGA 1155
BGA 1090
Cores/Threads
2/2
2/2
TDP
65 W
6 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x24 kB
Cache L2
2x256 kB
4096 kB
Cache L3
3072 kB
0 kB
Date
September 2012
November 2019
Mean monothread perf.
22.24k points
17.67k points
Mean multithread perf.
35.38k points
25.26k points

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
G645
N4020
Test#1 (Integers)
8.66k
5.14k (x0.59)
Test#2 (FP)
6.9k
7.89k (x1.14)
Test#3 (Generic, ZIP)
3.48k
2.87k (x0.83)
Test#1 (Memory)
3.2k
1.76k (x0.55)
TOTAL
22.24k
17.67k (x0.79)

Multithread

G645

N4020
Test#1 (Integers)
14.06k
7.46k (x0.53)
Test#2 (FP)
11.82k
11.61k (x0.98)
Test#3 (Generic, ZIP)
5.83k
4.27k (x0.73)
Test#1 (Memory)
3.69k
1.91k (x0.52)
TOTAL
35.38k
25.26k (x0.71)

Performance/W
G645
N4020
Test#1 (Integers)
216 points/W
1244 points/W
Test#2 (FP)
182 points/W
1936 points/W
Test#3 (Generic, ZIP)
90 points/W
712 points/W
Test#1 (Memory)
57 points/W
319 points/W
TOTAL
544 points/W
4211 points/W

Performance/GHz
G645
N4020
Test#1 (Integers)
2987 points/GHz
1837 points/GHz
Test#2 (FP)
2380 points/GHz
2816 points/GHz
Test#3 (Generic, ZIP)
1199 points/GHz
1026 points/GHz
Test#1 (Memory)
1103 points/GHz
630 points/GHz
TOTAL
7669 points/GHz
6309 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