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Core i7-2640M vs i3-5005U


Description
The i7-2640M is based on Sandy Bridge architecture while the i3-5005U is based on Broadwell.

Using the multithread performance as a reference, the i7-2640M gets a score of 54.9 k points while the i3-5005U gets 47.9 k points.

Summarizing, the i7-2640M is 1.1 times faster than the i3-5005U . 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 GHz
Boost frecuency
3.5 GHz
2 GHz
Socket
PGA 988B
Cores/Threads
2/4
2 /2
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
3072 kB
Date
September 2011
March 2015
Mean monothread perf.
25.86k points
25.61k points
Mean multithread perf.
54.86k points
54.99k 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
i3-5005U
Test#1 (Integers)
9.63k
6.24k (x0.65)
Test#2 (FP)
8.33k
8.82k (x1.06)
Test#3 (Generic, ZIP)
4.08k
2.38k (x0.58)
Test#1 (Memory)
3.82k
2.4k (x0.63)
TOTAL
25.86k
19.84k (x0.77)

Multithread

i7-2640M

i3-5005U
Test#1 (Integers)
21.22k
12.33k (x0.58)
Test#2 (FP)
19.6k
25.82k (x1.32)
Test#3 (Generic, ZIP)
10.09k
6.56k (x0.65)
Test#1 (Memory)
3.94k
3.18k (x0.81)
TOTAL
54.86k
47.89k (x0.87)

Performance/W
i7-2640M
i3-5005U
Test#1 (Integers)
606 points/W
822 points/W
Test#2 (FP)
560 points/W
1721 points/W
Test#3 (Generic, ZIP)
288 points/W
437 points/W
Test#1 (Memory)
112 points/W
212 points/W
TOTAL
1567 points/W
3193 points/W

Performance/GHz
i7-2640M
i3-5005U
Test#1 (Integers)
2752 points/GHz
3118 points/GHz
Test#2 (FP)
2380 points/GHz
4411 points/GHz
Test#3 (Generic, ZIP)
1165 points/GHz
1189 points/GHz
Test#1 (Memory)
1092 points/GHz
1201 points/GHz
TOTAL
7390 points/GHz
9920 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