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Core i5-450M vs i7-5500U


Description
The i5-450M is based on Westmere architecture while the i7-5500U is based on Broadwell.

Using the multithread performance as a reference, the i5-450M gets a score of 29.1 k points while the i7-5500U gets 63.7 k points.

Summarizing, the i7-5500U is 2.2 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
306d4
Core
Arrandale
Broadwell-U
Architecture
Base frecuency
2.4 GHz
2.4 GHz
Boost frecuency
2.667 GHz
3 GHz
Socket
Socket G1
BGA 1168
Cores/Threads
2/4
2 /4
TDP
35 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
256 kB
Cache L3
3072 kB
4096 kB
Date
June 2010
March 2015
Mean monothread perf.
12.93k points
40.41k points
Mean multithread perf.
29.1k points
82.89k 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
i7-5500U
Test#1 (Integers)
1.61k
3.31k (x2.05)
Test#2 (FP)
3.8k
11.61k (x3.06)
Test#3 (Generic, ZIP)
2.19k
3.94k (x1.8)
Test#1 (Memory)
1.65k
3.24k (x1.96)
TOTAL
9.25k
22.1k (x2.39)

Multithread

i5-450M

i7-5500U
Test#1 (Integers)
2.91k
5.97k (x2.05)
Test#2 (FP)
5.05k
25.54k (x5.06)
Test#3 (Generic, ZIP)
3.28k
8.8k (x2.68)
Test#1 (Memory)
3.07k
3.36k (x1.09)
TOTAL
14.31k
43.67k (x3.05)

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
i7-5500U
Test#1 (Integers)
5.4k
10.59k (x1.96)
Test#2 (FP)
3.7k
13.72k (x3.7)
Test#3 (Generic, ZIP)
2.06k
4.22k (x2.05)
Test#1 (Memory)
1.77k
3.64k (x2.05)
TOTAL
12.93k
32.16k (x2.49)

Multithread

i5-450M

i7-5500U
Test#1 (Integers)
11.83k
20.8k (x1.76)
Test#2 (FP)
9.39k
30.44k (x3.24)
Test#3 (Generic, ZIP)
5.31k
9.1k (x1.72)
Test#1 (Memory)
2.58k
3.35k (x1.3)
TOTAL
29.1k
63.69k (x2.19)

Performance/W
i5-450M
i7-5500U
Test#1 (Integers)
338 points/W
1387 points/W
Test#2 (FP)
268 points/W
2029 points/W
Test#3 (Generic, ZIP)
152 points/W
607 points/W
Test#1 (Memory)
74 points/W
223 points/W
TOTAL
831 points/W
4246 points/W

Performance/GHz
i5-450M
i7-5500U
Test#1 (Integers)
2024 points/GHz
3529 points/GHz
Test#2 (FP)
1388 points/GHz
4572 points/GHz
Test#3 (Generic, ZIP)
772 points/GHz
1408 points/GHz
Test#1 (Memory)
665 points/GHz
1213 points/GHz
TOTAL
4850 points/GHz
10721 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