Core i5-2400 vs i7-2640M
Description
Both models i5-2400 and i7-2640M are based on Sandy Bridge architecture.
"Sandy Bridge codename was originally ""Gesher"". The development began in 2005 and four years later, the first Sandy Bridge CPU was presented. The most prominent features are Intel Turbo Boost 2.0, AES encryption and SHA-1 hashing acceleration, Advanced Vector Extensions (AVX) 256-bit instruction set and the ability to have up to 8 physical cores or 16 logical cores through Hyper-Threading."
Using the multithread performance as a reference, the i5-2400 gets a score of 84.4 k points while the i7-2640M gets 54.9 k points.
Summarizing, the i5-2400 is 1.5 times faster than the i7-2640M. To get a proper comparison between both models, take a look to the data shown below.
"Sandy Bridge codename was originally ""Gesher"". The development began in 2005 and four years later, the first Sandy Bridge CPU was presented. The most prominent features are Intel Turbo Boost 2.0, AES encryption and SHA-1 hashing acceleration, Advanced Vector Extensions (AVX) 256-bit instruction set and the ability to have up to 8 physical cores or 16 logical cores through Hyper-Threading."
Using the multithread performance as a reference, the i5-2400 gets a score of 84.4 k points while the i7-2640M gets 54.9 k points.
Summarizing, the i5-2400 is 1.5 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
206a7
Core
Sandy Bridge
Sandy Bridge
Base frecuency
3.1 GHz
2.8 GHz
Boost frecuency
3.4 GHz
3.5 GHz
Socket
LGA 1155
PGA 988B
Cores/Threads
4/4
2/4
TDP
95 W
35 W
Cache L1 (d+i)
4x32+x4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
6144 kB
4096 kB
Date
January 2011
September 2011
Mean monothread perf.
25.49k points
25.86k points
Mean multithread perf.
84.36k points
54.86k 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
i5-2400
i7-2640M
Test#1 (Integers)
9.16k
9.63k (x1.05)
Test#2 (FP)
8.2k
8.33k (x1.02)
Test#3 (Generic, ZIP)
3.95k
4.08k (x1.03)
Test#1 (Memory)
4.17k
3.82k (x0.92)
TOTAL
25.49k
25.86k (x1.01)
Multithread
i5-2400
i7-2640M
Test#1 (Integers)
34.74k
21.22k (x0.61)
Test#2 (FP)
31.07k
19.6k (x0.63)
Test#3 (Generic, ZIP)
14.86k
10.09k (x0.68)
Test#1 (Memory)
3.69k
3.94k (x1.07)
TOTAL
84.36k
54.86k (x0.65)
Performance/W
i5-2400
i7-2640M
Test#1 (Integers)
366 points/W
606 points/W
Test#2 (FP)
327 points/W
560 points/W
Test#3 (Generic, ZIP)
156 points/W
288 points/W
Test#1 (Memory)
39 points/W
112 points/W
TOTAL
888 points/W
1567 points/W
Performance/GHz
i5-2400
i7-2640M
Test#1 (Integers)
2695 points/GHz
2752 points/GHz
Test#2 (FP)
2411 points/GHz
2380 points/GHz
Test#3 (Generic, ZIP)
1163 points/GHz
1165 points/GHz
Test#1 (Memory)
1228 points/GHz
1092 points/GHz
TOTAL
7497 points/GHz
7390 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4