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Core i5-2500K vs i3-3120M


Description
The i5-2500K is based on Sandy Bridge architecture while the i3-3120M is based on Ivy Bridge.

Using the multithread performance as a reference, the i5-2500K gets a score of 111.8 k points while the i3-3120M gets 47.8 k points.

Summarizing, the i5-2500K is 2.3 times faster than the i3-3120M . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206a7
306a9
Core
Sandy Bridge
Architecture
Base frecuency
3.3 GHz
2.5 GHz
Boost frecuency
3.7 GHz
2.5 GHz
Socket
LGA 1155
BGA1023
Cores/Threads
4/4
2 /2
TDP
95 W
35 W
Cache L1 (d+i)
4x32+x4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
3072 kB
Date
January 2011
September 2012
Mean monothread perf.
32.85k points
22.12k points
Mean multithread perf.
111.83k points
47.78k 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
i5-2500K
i3-3120M
Test#1 (Integers)
11.84k
7.92k (x0.67)
Test#2 (FP)
10.43k
7.96k (x0.76)
Test#3 (Generic, ZIP)
5.22k
3.09k (x0.59)
Test#1 (Memory)
5.36k
3.15k (x0.59)
TOTAL
32.85k
22.12k (x0.67)

Multithread

i5-2500K

i3-3120M
Test#1 (Integers)
45.51k
16.82k (x0.37)
Test#2 (FP)
40.83k
19k (x0.47)
Test#3 (Generic, ZIP)
20.7k
7.7k (x0.37)
Test#1 (Memory)
4.79k
4.25k (x0.89)
TOTAL
111.83k
47.78k (x0.43)

Performance/W
i5-2500K
i3-3120M
Test#1 (Integers)
479 points/W
481 points/W
Test#2 (FP)
430 points/W
543 points/W
Test#3 (Generic, ZIP)
218 points/W
220 points/W
Test#1 (Memory)
50 points/W
121 points/W
TOTAL
1177 points/W
1365 points/W

Performance/GHz
i5-2500K
i3-3120M
Test#1 (Integers)
3200 points/GHz
3169 points/GHz
Test#2 (FP)
2818 points/GHz
3182 points/GHz
Test#3 (Generic, ZIP)
1411 points/GHz
1236 points/GHz
Test#1 (Memory)
1449 points/GHz
1259 points/GHz
TOTAL
8878 points/GHz
8847 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