Core i7-5820K vs i7-2640M
Description
The i7-5820K is based on Haswell architecture while the i7-2640M is based on Sandy Bridge.
Using the multithread performance as a reference, the i7-5820K gets a score of 129.1 k points while the i7-2640M gets 54.9 k points.
Summarizing, the i7-5820K is 2.4 times faster than the i7-2640M. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-5820K gets a score of 129.1 k points while the i7-2640M gets 54.9 k points.
Summarizing, the i7-5820K is 2.4 times faster than the i7-2640M. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
306f2
206a7
Core
Haswell-E
Sandy Bridge
Base frecuency
3.3 GHz
2.8 GHz
Boost frecuency
3.6 GHz
3.5 GHz
Socket
LGA 1150
PGA 988B
Cores/Threads
6/12
2/4
TDP
140 W
35 W
Cache L1 (d+i)
6x32+6x32 kB
2x32+2x32 kB
Cache L2
6x256 kB
2x256 kB
Cache L3
15360 kB
4096 kB
Date
September 2014
September 2011
Mean monothread perf.
31.53k points
25.86k points
Mean multithread perf.
129.06k 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
i7-5820K
i7-2640M
Test#1 (Integers)
12.03k
9.63k (x0.8)
Test#2 (FP)
11.23k
8.33k (x0.74)
Test#3 (Generic, ZIP)
4.55k
4.08k (x0.9)
Test#1 (Memory)
3.72k
3.82k (x1.03)
TOTAL
31.53k
25.86k (x0.82)
Multithread
i7-5820K
i7-2640M
Test#1 (Integers)
49.48k
21.22k (x0.43)
Test#2 (FP)
52.21k
19.6k (x0.38)
Test#3 (Generic, ZIP)
19.7k
10.09k (x0.51)
Test#1 (Memory)
7.67k
3.94k (x0.51)
TOTAL
129.06k
54.86k (x0.43)
Performance/W
i7-5820K
i7-2640M
Test#1 (Integers)
353 points/W
606 points/W
Test#2 (FP)
373 points/W
560 points/W
Test#3 (Generic, ZIP)
141 points/W
288 points/W
Test#1 (Memory)
55 points/W
112 points/W
TOTAL
922 points/W
1567 points/W
Performance/GHz
i7-5820K
i7-2640M
Test#1 (Integers)
3343 points/GHz
2752 points/GHz
Test#2 (FP)
3119 points/GHz
2380 points/GHz
Test#3 (Generic, ZIP)
1264 points/GHz
1165 points/GHz
Test#1 (Memory)
1033 points/GHz
1092 points/GHz
TOTAL
8759 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