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Core i7-5820K vs i7-2600K


Description
The i7-5820K is based on Haswell architecture while the i7-2600K 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 i7-2600K gets 106.9 k points.

Summarizing, the i7-5820K is 1.2 times faster than the i7-2600K . 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
Architecture
Base frecuency
3.3 GHz
3.4 GHz
Boost frecuency
3.6 GHz
3.8 GHz
Socket
LGA 1150
LGA 1155
Cores/Threads
6/12
4/8
TDP
140 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
4x32+4x32 kB
Cache L2
6x256 kB
4x256 kB
Cache L3
15360 kB
8192 kB
Date
September 2014
June 2011
Mean monothread perf.
31.53k points
27.38k points
Mean multithread perf.
129.06k points
106.85k 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
i7-2600K
Test#1 (Integers)
12.03k
9.61k (x0.8)
Test#2 (FP)
11.23k
8.51k (x0.76)
Test#3 (Generic, ZIP)
4.55k
4.2k (x0.92)
Test#1 (Memory)
3.72k
5.06k (x1.36)
TOTAL
31.53k
27.38k (x0.87)

Multithread

i7-5820K

i7-2600K
Test#1 (Integers)
49.48k
42.23k (x0.85)
Test#2 (FP)
52.21k
40.09k (x0.77)
Test#3 (Generic, ZIP)
19.7k
19.97k (x1.01)
Test#1 (Memory)
7.67k
4.57k (x0.6)
TOTAL
129.06k
106.85k (x0.83)

Performance/W
i7-5820K
i7-2600K
Test#1 (Integers)
353 points/W
444 points/W
Test#2 (FP)
373 points/W
422 points/W
Test#3 (Generic, ZIP)
141 points/W
210 points/W
Test#1 (Memory)
55 points/W
48 points/W
TOTAL
922 points/W
1125 points/W

Performance/GHz
i7-5820K
i7-2600K
Test#1 (Integers)
3343 points/GHz
2528 points/GHz
Test#2 (FP)
3119 points/GHz
2238 points/GHz
Test#3 (Generic, ZIP)
1264 points/GHz
1105 points/GHz
Test#1 (Memory)
1033 points/GHz
1333 points/GHz
TOTAL
8759 points/GHz
7204 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