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Xeon E5645 vs Celeron 4205U


Description
The E5645 is based on Westmere architecture while the 4205U is based on Whiskey Lake.

Using the multithread performance as a reference, the E5645 gets a score of 77 k points while the 4205U gets 37.6 k points.

Summarizing, the E5645 is 2 times faster than the 4205U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206c2
806ec
Core
Westmere-EP
Whiskey Lake-U
Architecture
Base frecuency
2.4 GHz
1.8 GHz
Boost frecuency
2.8 GHz
1.8 GHz
Socket
LGA 1366
BGA 1528
Cores/Threads
6 /6
2/2
TDP
80 W
15 W
Cache L1 (d+i)
64 kB
2x32+2x32 kB
Cache L2
256 kB
2x256 kB
Cache L3
12288 kB
2048 kB
Date
March 2010
January 2019
Mean monothread perf.
15.64k points
20.61k points
Mean multithread perf.
76.96k points
37.61k 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
E5645
4205U
Test#1 (Integers)
6.47k
6.53k (x1.01)
Test#2 (FP)
4.4k
9.46k (x2.15)
Test#3 (Generic, ZIP)
2.43k
2.28k (x0.94)
Test#1 (Memory)
2.33k
2.34k (x1)
TOTAL
15.64k
20.61k (x1.32)

Multithread

E5645

4205U
Test#1 (Integers)
34.43k
12.97k (x0.38)
Test#2 (FP)
24.23k
18.12k (x0.75)
Test#3 (Generic, ZIP)
14.48k
4.33k (x0.3)
Test#1 (Memory)
3.81k
2.18k (x0.57)
TOTAL
76.96k
37.61k (x0.49)

Performance/W
E5645
4205U
Test#1 (Integers)
430 points/W
865 points/W
Test#2 (FP)
303 points/W
1208 points/W
Test#3 (Generic, ZIP)
181 points/W
289 points/W
Test#1 (Memory)
48 points/W
146 points/W
TOTAL
962 points/W
2507 points/W

Performance/GHz
E5645
4205U
Test#1 (Integers)
2311 points/GHz
3629 points/GHz
Test#2 (FP)
1573 points/GHz
5255 points/GHz
Test#3 (Generic, ZIP)
867 points/GHz
1269 points/GHz
Test#1 (Memory)
833 points/GHz
1298 points/GHz
TOTAL
5584 points/GHz
11451 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