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Core i5-450M vs Pentium D 820


Description
The i5-450M is based on Westmere architecture while the 820 is based on NetBurst.

Using the multithread performance as a reference, the i5-450M gets a score of 29.1 k points while the 820 gets 14.1 k points.

Summarizing, the i5-450M is 2.1 times faster than the 820. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
20655
f44
Core
Arrandale
Smithfield
Architecture
Base frecuency
2.4 GHz
2.8 GHz
Boost frecuency
2.667 GHz
2.8 GHz
Socket
Socket G1
LGA 775
Cores/Threads
2/4
2/2
TDP
35 W
130 W
Cache L1 (d+i)
2x32+2x32 kB
16+8 kB
Cache L2
2x256 kB
2048 kB
Cache L3
3072 kB
0 kB
Date
June 2010
May 2005
Mean monothread perf.
12.93k points
7.45k points
Mean multithread perf.
29.1k points
14.07k 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
820
Test#1 (Integers)
1.61k
1.46k (x0.9)
Test#2 (FP)
3.8k
2.6k (x0.68)
Test#3 (Generic, ZIP)
2.19k
1.26k (x0.58)
Test#1 (Memory)
1.65k
0.91k (x0.55)
TOTAL
9.25k
6.23k (x0.67)

Multithread

i5-450M

820
Test#1 (Integers)
2.91k
2.93k (x1.01)
Test#2 (FP)
5.05k
5.19k (x1.03)
Test#3 (Generic, ZIP)
3.28k
2.53k (x0.77)
Test#1 (Memory)
3.07k
0.94k (x0.31)
TOTAL
14.31k
11.59k (x0.81)

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
820
Test#1 (Integers)
5.4k
1.93k (x0.36)
Test#2 (FP)
3.7k
3.11k (x0.84)
Test#3 (Generic, ZIP)
2.06k
1.49k (x0.73)
Test#1 (Memory)
1.77k
0.91k (x0.51)
TOTAL
12.93k
7.45k (x0.58)

Multithread

i5-450M

820
Test#1 (Integers)
11.83k
3.92k (x0.33)
Test#2 (FP)
9.39k
6.23k (x0.66)
Test#3 (Generic, ZIP)
5.31k
2.99k (x0.56)
Test#1 (Memory)
2.58k
0.94k (x0.36)
TOTAL
29.1k
14.07k (x0.48)

Performance/W
i5-450M
820
Test#1 (Integers)
338 points/W
30 points/W
Test#2 (FP)
268 points/W
48 points/W
Test#3 (Generic, ZIP)
152 points/W
23 points/W
Test#1 (Memory)
74 points/W
7 points/W
TOTAL
831 points/W
108 points/W

Performance/GHz
i5-450M
820
Test#1 (Integers)
2024 points/GHz
690 points/GHz
Test#2 (FP)
1388 points/GHz
1112 points/GHz
Test#3 (Generic, ZIP)
772 points/GHz
534 points/GHz
Test#1 (Memory)
665 points/GHz
324 points/GHz
TOTAL
4850 points/GHz
2660 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