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Core i7-2640M vs i7-5500U


Description
The i7-2640M is based on Sandy Bridge architecture while the i7-5500U is based on Broadwell.

Using the multithread performance as a reference, the i7-2640M gets a score of 54.9 k points while the i7-5500U gets 67.1 k points.

Summarizing, the i7-5500U is 1.2 times faster than the i7-2640M. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206a7
306d4
Core
Sandy Bridge
Broadwell-U
Architecture
Base frecuency
2.8 GHz
2.4 GHz
Boost frecuency
3.5 GHz
3 GHz
Socket
PGA 988B
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
4096 kB
4096 kB
Date
September 2011
March 2015
Mean monothread perf.
25.86k points
40.41k points
Mean multithread perf.
54.86k points
82.89k points

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-2640M
i7-5500U
Test#1 (Integers)
9.63k
10.37k (x1.08)
Test#2 (FP)
8.33k
14.25k (x1.71)
Test#3 (Generic, ZIP)
4.08k
4.07k (x1)
Test#1 (Memory)
3.82k
3.12k (x0.82)
TOTAL
25.86k
31.81k (x1.23)

Multithread

i7-2640M

i7-5500U
Test#1 (Integers)
21.22k
20.93k (x0.99)
Test#2 (FP)
19.6k
33.87k (x1.73)
Test#3 (Generic, ZIP)
10.09k
8.98k (x0.89)
Test#1 (Memory)
3.94k
3.35k (x0.85)
TOTAL
54.86k
67.13k (x1.22)

Performance/W
i7-2640M
i7-5500U
Test#1 (Integers)
606 points/W
1395 points/W
Test#2 (FP)
560 points/W
2258 points/W
Test#3 (Generic, ZIP)
288 points/W
599 points/W
Test#1 (Memory)
112 points/W
223 points/W
TOTAL
1567 points/W
4476 points/W

Performance/GHz
i7-2640M
i7-5500U
Test#1 (Integers)
2752 points/GHz
3456 points/GHz
Test#2 (FP)
2380 points/GHz
4751 points/GHz
Test#3 (Generic, ZIP)
1165 points/GHz
1358 points/GHz
Test#1 (Memory)
1092 points/GHz
1039 points/GHz
TOTAL
7390 points/GHz
10604 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