Core i7-2640M vs i7-5820K
Description
The i7-2640M is based on Sandy Bridge architecture while the i7-5820K is based on Haswell.
Using the multithread performance as a reference, the i7-2640M gets a score of 54.9 k points while the i7-5820K gets 129.1 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 i7-2640M gets a score of 54.9 k points while the i7-5820K gets 129.1 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
206a7
306f2
Core
Sandy Bridge
Haswell-E
Base frecuency
2.8 GHz
3.3 GHz
Boost frecuency
3.5 GHz
3.6 GHz
Socket
PGA 988B
LGA 1150
Cores/Threads
2/4
6/12
TDP
35 W
140 W
Cache L1 (d+i)
2x32+2x32 kB
32+32 kB
Cache L2
2x256 kB
256 kB
Cache L3
4096 kB
15360 kB
Date
September 2011
September 2014
Mean monothread perf.
25.86k points
31.53k points
Mean multithread perf.
54.86k points
129.06k 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
i7-5820K
Test#1 (Integers)
9.63k
12.03k (x1.25)
Test#2 (FP)
8.33k
11.23k (x1.35)
Test#3 (Generic, ZIP)
4.08k
4.55k (x1.12)
Test#1 (Memory)
3.82k
3.72k (x0.97)
TOTAL
25.86k
31.53k (x1.22)
Multithread
i7-2640M
i7-5820K
Test#1 (Integers)
21.22k
49.48k (x2.33)
Test#2 (FP)
19.6k
52.21k (x2.66)
Test#3 (Generic, ZIP)
10.09k
19.7k (x1.95)
Test#1 (Memory)
3.94k
7.67k (x1.95)
TOTAL
54.86k
129.06k (x2.35)
Performance/W
i7-2640M
i7-5820K
Test#1 (Integers)
606 points/W
353 points/W
Test#2 (FP)
560 points/W
373 points/W
Test#3 (Generic, ZIP)
288 points/W
141 points/W
Test#1 (Memory)
112 points/W
55 points/W
TOTAL
1567 points/W
922 points/W
Performance/GHz
i7-2640M
i7-5820K
Test#1 (Integers)
2752 points/GHz
3343 points/GHz
Test#2 (FP)
2380 points/GHz
3119 points/GHz
Test#3 (Generic, ZIP)
1165 points/GHz
1264 points/GHz
Test#1 (Memory)
1092 points/GHz
1033 points/GHz
TOTAL
7390 points/GHz
8759 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