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Core i5-450M vs i7-920


Description
The i5-450M is based on Westmere architecture while the i7-920 is based on Nehalem Westmere.

Using the multithread performance as a reference, the i5-450M gets a score of 29.1 k points while the i7-920 gets 47.2 k points.

Summarizing, the i7-920 is 1.6 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
106a5
Core
Arrandale
Bloomfield
Architecture
Westmere
Base frecuency
2.4 GHz
2.667 GHz
Boost frecuency
2.667 GHz
2.993 GHz
Socket
Socket G1
LGA 1366
Cores/Threads
2/4
4/8
TDP
35 W
130 W
Cache L1 (d+i)
2x32+2x32 kB
32+32 kB
Cache L2
2x256 kB
256 kB
Cache L3
3072 kB
8192 kB
Date
June 2010
November 2008
Mean monothread perf.
12.93k points
16.33k points
Mean multithread perf.
29.1k points
47.2k 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
i7-920
Test#1 (Integers)
1.61k
1.97k (x1.22)
Test#2 (FP)
3.8k
4.43k (x1.17)
Test#3 (Generic, ZIP)
2.19k
2.75k (x1.26)
Test#1 (Memory)
1.65k
2.53k (x1.53)
TOTAL
9.25k
11.68k (x1.26)

Multithread

i5-450M

i7-920
Test#1 (Integers)
2.91k
7.71k (x2.65)
Test#2 (FP)
5.05k
18.81k (x3.72)
Test#3 (Generic, ZIP)
3.28k
13.76k (x4.19)
Test#1 (Memory)
3.07k
5.07k (x1.65)
TOTAL
14.31k
45.34k (x3.17)

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
i7-920
Test#1 (Integers)
5.4k
6.12k (x1.13)
Test#2 (FP)
3.7k
4.76k (x1.29)
Test#3 (Generic, ZIP)
2.06k
2.78k (x1.35)
Test#1 (Memory)
1.77k
2.67k (x1.5)
TOTAL
12.93k
16.33k (x1.26)

Multithread

i5-450M

i7-920
Test#1 (Integers)
11.83k
19.26k (x1.63)
Test#2 (FP)
9.39k
14.96k (x1.59)
Test#3 (Generic, ZIP)
5.31k
8.05k (x1.52)
Test#1 (Memory)
2.58k
4.92k (x1.91)
TOTAL
29.1k
47.2k (x1.62)

Performance/W
i5-450M
i7-920
Test#1 (Integers)
338 points/W
148 points/W
Test#2 (FP)
268 points/W
115 points/W
Test#3 (Generic, ZIP)
152 points/W
62 points/W
Test#1 (Memory)
74 points/W
38 points/W
TOTAL
831 points/W
363 points/W

Performance/GHz
i5-450M
i7-920
Test#1 (Integers)
2024 points/GHz
2044 points/GHz
Test#2 (FP)
1388 points/GHz
1591 points/GHz
Test#3 (Generic, ZIP)
772 points/GHz
930 points/GHz
Test#1 (Memory)
665 points/GHz
891 points/GHz
TOTAL
4850 points/GHz
5457 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