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Core i5-450M vs Xeon E5645


Description
Both models i5-450M and E5645 are based on Westmere architecture.



Using the multithread performance as a reference, the i5-450M gets a score of 29.1 k points while the E5645 gets 77 k points.

Summarizing, the E5645 is 2.6 times faster than the i5-450M. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
20655
206c2
Core
Arrandale
Westmere-EP
Architecture
Base frecuency
2.4 GHz
2.4 GHz
Boost frecuency
2.667 GHz
2.8 GHz
Socket
Socket G1
LGA 1366
Cores/Threads
2/4
6 /6
TDP
35 W
80 W
Cache L1 (d+i)
2x32+2x32 kB
64 kB
Cache L2
2x256 kB
256 kB
Cache L3
3072 kB
12288 kB
Date
June 2010
March 2010
Mean monothread perf.
12.93k points
15.64k points
Mean multithread perf.
29.1k points
76.96k 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
i5-450M
E5645
Test#1 (Integers)
1.61k
1.78k (x1.1)
Test#2 (FP)
3.8k
3.91k (x1.03)
Test#3 (Generic, ZIP)
2.19k
2.52k (x1.15)
Test#1 (Memory)
1.65k
2.42k (x1.47)
TOTAL
9.25k
10.64k (x1.15)

Multithread

i5-450M

E5645
Test#1 (Integers)
2.91k
9.67k (x3.32)
Test#2 (FP)
5.05k
22.92k (x4.54)
Test#3 (Generic, ZIP)
3.28k
14.31k (x4.36)
Test#1 (Memory)
3.07k
3.81k (x1.24)
TOTAL
14.31k
50.7k (x3.54)

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
i5-450M
E5645
Test#1 (Integers)
5.4k
6.47k (x1.2)
Test#2 (FP)
3.7k
4.4k (x1.19)
Test#3 (Generic, ZIP)
2.06k
2.43k (x1.18)
Test#1 (Memory)
1.77k
2.33k (x1.31)
TOTAL
12.93k
15.64k (x1.21)

Multithread

i5-450M

E5645
Test#1 (Integers)
11.83k
34.43k (x2.91)
Test#2 (FP)
9.39k
24.23k (x2.58)
Test#3 (Generic, ZIP)
5.31k
14.48k (x2.73)
Test#1 (Memory)
2.58k
3.81k (x1.48)
TOTAL
29.1k
76.96k (x2.64)

Performance/W
i5-450M
E5645
Test#1 (Integers)
338 points/W
430 points/W
Test#2 (FP)
268 points/W
303 points/W
Test#3 (Generic, ZIP)
152 points/W
181 points/W
Test#1 (Memory)
74 points/W
48 points/W
TOTAL
831 points/W
962 points/W

Performance/GHz
i5-450M
E5645
Test#1 (Integers)
2024 points/GHz
2311 points/GHz
Test#2 (FP)
1388 points/GHz
1573 points/GHz
Test#3 (Generic, ZIP)
772 points/GHz
867 points/GHz
Test#1 (Memory)
665 points/GHz
833 points/GHz
TOTAL
4850 points/GHz
5584 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