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Core i3-540 vs i7-870


Description
The i3-540 is based on Westmere architecture while the i7-870 is based on Nehalem.

Using the multithread performance as a reference, the i3-540 gets a score of 38.9 k points while the i7-870 gets 42.5 k points.

Summarizing, the i7-870 is 1.1 times faster than the i3-540 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
20655
106e5
Core
Clarkdale
Lynnfield
Architecture
Base frecuency
3.067 GHz
2.933 GHz
Boost frecuency
3.067 GHz
3.6 GHz
Socket
LGA 1156
LGA 1156
Cores/Threads
2/2
4/8
TDP
73 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
4096 kB
8192 kB
Date
January 2010
September 2009
Mean monothread perf.
18.27k points
15.44k points
Mean multithread perf.
38.86k points
42.53k points

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i3-540
i7-870
Test#1 (Integers)
7.65k
5.86k (x0.77)
Test#2 (FP)
5.14k
4.53k (x0.88)
Test#3 (Generic, ZIP)
3.06k
2.36k (x0.77)
Test#1 (Memory)
2.42k
2.69k (x1.11)
TOTAL
18.27k
15.44k (x0.84)

Multithread

i3-540

i7-870
Test#1 (Integers)
16.21k
17.53k (x1.08)
Test#2 (FP)
12.04k
13.65k (x1.13)
Test#3 (Generic, ZIP)
8.28k
7.93k (x0.96)
Test#1 (Memory)
2.33k
3.41k (x1.47)
TOTAL
38.86k
42.53k (x1.09)

Performance/W
i3-540
i7-870
Test#1 (Integers)
222 points/W
185 points/W
Test#2 (FP)
165 points/W
144 points/W
Test#3 (Generic, ZIP)
113 points/W
83 points/W
Test#1 (Memory)
32 points/W
36 points/W
TOTAL
532 points/W
448 points/W

Performance/GHz
i3-540
i7-870
Test#1 (Integers)
2494 points/GHz
1629 points/GHz
Test#2 (FP)
1676 points/GHz
1257 points/GHz
Test#3 (Generic, ZIP)
999 points/GHz
655 points/GHz
Test#1 (Memory)
789 points/GHz
748 points/GHz
TOTAL
5958 points/GHz
4289 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