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Celeron 4205U vs Core i7-640LM


Description
The 4205U is based on Whiskey Lake architecture while the i7-640LM is based on Westmere.

Using the multithread performance as a reference, the 4205U gets a score of 37.6 k points while the i7-640LM gets 31.7 k points.

Summarizing, the 4205U is 1.2 times faster than the i7-640LM. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ec
20655
Core
Whiskey Lake-U
Calpella
Architecture
Base frecuency
1.8 GHz
2.133 GHz
Boost frecuency
1.8 GHz
2.667 GHz
Socket
BGA 1528
BGA1288
Cores/Threads
2/2
2/4
TDP
15 W
25 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
2x256 kB
Cache L3
2048 kB
4096 kB
Date
January 2019
January 2010
Mean monothread perf.
20.61k points
16.35k points
Mean multithread perf.
37.61k points
31.74k 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
4205U
i7-640LM
Test#1 (Integers)
6.53k
7.01k (x1.07)
Test#2 (FP)
9.46k
4.58k (x0.48)
Test#3 (Generic, ZIP)
2.28k
2.73k (x1.2)
Test#1 (Memory)
2.34k
2.03k (x0.87)
TOTAL
20.61k
16.35k (x0.79)

Multithread

4205U

i7-640LM
Test#1 (Integers)
12.97k
12.93k (x1)
Test#2 (FP)
18.12k
10.21k (x0.56)
Test#3 (Generic, ZIP)
4.33k
6.22k (x1.44)
Test#1 (Memory)
2.18k
2.37k (x1.08)
TOTAL
37.61k
31.74k (x0.84)

Performance/W
4205U
i7-640LM
Test#1 (Integers)
865 points/W
517 points/W
Test#2 (FP)
1208 points/W
409 points/W
Test#3 (Generic, ZIP)
289 points/W
249 points/W
Test#1 (Memory)
146 points/W
95 points/W
TOTAL
2507 points/W
1269 points/W

Performance/GHz
4205U
i7-640LM
Test#1 (Integers)
3629 points/GHz
2627 points/GHz
Test#2 (FP)
5255 points/GHz
1718 points/GHz
Test#3 (Generic, ZIP)
1269 points/GHz
1024 points/GHz
Test#1 (Memory)
1298 points/GHz
762 points/GHz
TOTAL
11451 points/GHz
6130 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