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Core i7-2600 vs i5-2500K


Description
Both models i7-2600 and i5-2500K 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 i7-2600 gets a score of 93.7 k points while the i5-2500K gets 111.8 k points.

Summarizing, the i5-2500K is 1.2 times faster than the i7-2600 . 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
Architecture
Base frecuency
3.4 GHz
3.3 GHz
Boost frecuency
3.8 GHz
3.7 GHz
Socket
LGA 1155
LGA 1155
Cores/Threads
4/8
4/4
TDP
95 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+x4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
June 2011
January 2011
Mean monothread perf.
28.68k points
32.85k points
Mean multithread perf.
93.69k points
111.83k 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
i7-2600
i5-2500K
Test#1 (Integers)
10.03k
11.84k (x1.18)
Test#2 (FP)
8.91k
10.43k (x1.17)
Test#3 (Generic, ZIP)
4.34k
5.22k (x1.2)
Test#1 (Memory)
5.41k
5.36k (x0.99)
TOTAL
28.68k
32.85k (x1.15)

Multithread

i7-2600

i5-2500K
Test#1 (Integers)
37.69k
45.51k (x1.21)
Test#2 (FP)
34.22k
40.83k (x1.19)
Test#3 (Generic, ZIP)
17.65k
20.7k (x1.17)
Test#1 (Memory)
4.13k
4.79k (x1.16)
TOTAL
93.69k
111.83k (x1.19)

Performance/W
i7-2600
i5-2500K
Test#1 (Integers)
397 points/W
479 points/W
Test#2 (FP)
360 points/W
430 points/W
Test#3 (Generic, ZIP)
186 points/W
218 points/W
Test#1 (Memory)
43 points/W
50 points/W
TOTAL
986 points/W
1177 points/W

Performance/GHz
i7-2600
i5-2500K
Test#1 (Integers)
2639 points/GHz
3200 points/GHz
Test#2 (FP)
2343 points/GHz
2818 points/GHz
Test#3 (Generic, ZIP)
1141 points/GHz
1411 points/GHz
Test#1 (Memory)
1425 points/GHz
1449 points/GHz
TOTAL
7549 points/GHz
8878 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