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Core i7-930 vs i3-2120


Description
The i7-930 is based on Westmere architecture while the i3-2120 is based on Sandy Bridge.

Using the multithread performance as a reference, the i7-930 gets a score of 69.4 k points while the i3-2120 gets 51.2 k points.

Summarizing, the i7-930 is 1.4 times faster than the i3-2120 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106a5
206a7
Core
Bloomfield
Sandy Bridge
Architecture
Base frecuency
2.8 GHz
3.3 GHz
Boost frecuency
3.067 GHz
3.3 GHz
Socket
LGA 1366
LGA 1155
Cores/Threads
4/8
2/2
TDP
130 W
65 W
Cache L1 (d+i)
32+32 kB
32+32 kB
Cache L2
256 kB
256 kB
Cache L3
8192 kB
3072 kB
Date
February 2010
February 2012

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-930
i3-2120
Test#1 (Integers)
1941
2699 (39.02%)
Test#2 (FP)
4384
7404 (68.90%)
Test#3 (Generic, ZIP)
2638
3819 (44.75%)
Test#1 (Memory)
2408
2986 (24.00%)
TOTAL
11371
16908 (48.69%)

Multithread

i7-930

i3-2120
Test#1 (Integers)
7305
6357 (-12.97%)
Test#2 (FP)
19361
16874 (-12.85%)
Test#3 (Generic, ZIP)
13429
9398 (-30.02%)
Test#1 (Memory)
2011
2906 (44.50%)
TOTAL
42106
35535 (-15.61%)

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
i7-930
i3-2120
Test#1 (Integers)
7276
9815 (34.90%)
Test#2 (FP)
4819
7896 (63.84%)
Test#3 (Generic, ZIP)
2862
3980 (39.06%)
Test#1 (Memory)
2623
2954 (12.61%)
TOTAL
17580
24645 (40.18%)

Multithread

i7-930

i3-2120
Test#1 (Integers)
28092
20462 (-27.16%)
Test#2 (FP)
21624
17773 (-17.81%)
Test#3 (Generic, ZIP)
14826
10031 (-32.34%)
Test#1 (Memory)
4851
2945 (-39.29%)
TOTAL
69393
51211 (-26.20%)

Performance/W
i7-930
i3-2120
Test#1 (Integers)
216 points/W
315 points/W
Test#2 (FP)
166 points/W
273 points/W
Test#3 (Generic, ZIP)
114 points/W
154 points/W
Test#1 (Memory)
37 points/W
45 points/W
TOTAL
534 points/W
788 points/W

Performance/GHz
i7-930
i3-2120
Test#1 (Integers)
2372 points/GHz
2974 points/GHz
Test#2 (FP)
1571 points/GHz
2393 points/GHz
Test#3 (Generic, ZIP)
933 points/GHz
1206 points/GHz
Test#1 (Memory)
855 points/GHz
895 points/GHz
TOTAL
5732 points/GHz
7468 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. 3.7.8