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Core i7-5500U vs i5-450M


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

Using the multithread performance as a reference, the i7-5500U gets a score of 63.7 k points while the i5-450M gets 29.1 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
306d4
20655
Core
Broadwell-U
Arrandale
Architecture
Base frecuency
2.4 GHz
2.4 GHz
Boost frecuency
3 GHz
2.667 GHz
Socket
BGA 1168
Socket G1
Cores/Threads
2 /4
2/4
TDP
15 W
35 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
256 kB
2x256 kB
Cache L3
4096 kB
3072 kB
Date
March 2015
June 2010
Mean monothread perf.
40.41k points
12.93k points
Mean multithread perf.
82.89k points
29.1k 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
i7-5500U
i5-450M
Test#1 (Integers)
3.31k
1.61k (x0.49)
Test#2 (FP)
11.61k
3.8k (x0.33)
Test#3 (Generic, ZIP)
3.94k
2.19k (x0.56)
Test#1 (Memory)
3.24k
1.65k (x0.51)
TOTAL
22.1k
9.25k (x0.42)

Multithread

i7-5500U

i5-450M
Test#1 (Integers)
5.97k
2.91k (x0.49)
Test#2 (FP)
25.54k
5.05k (x0.2)
Test#3 (Generic, ZIP)
8.8k
3.28k (x0.37)
Test#1 (Memory)
3.36k
3.07k (x0.92)
TOTAL
43.67k
14.31k (x0.33)

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
i7-5500U
i5-450M
Test#1 (Integers)
10.59k
5.4k (x0.51)
Test#2 (FP)
13.72k
3.7k (x0.27)
Test#3 (Generic, ZIP)
4.22k
2.06k (x0.49)
Test#1 (Memory)
3.64k
1.77k (x0.49)
TOTAL
32.16k
12.93k (x0.4)

Multithread

i7-5500U

i5-450M
Test#1 (Integers)
20.8k
11.83k (x0.57)
Test#2 (FP)
30.44k
9.39k (x0.31)
Test#3 (Generic, ZIP)
9.1k
5.31k (x0.58)
Test#1 (Memory)
3.35k
2.58k (x0.77)
TOTAL
63.69k
29.1k (x0.46)

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

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