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Core i7-920 vs i5-2300


Description
The i7-920 is based on Nehalem Westmere architecture while the i5-2300 is based on Sandy Bridge.

Using the multithread performance as a reference, the i7-920 gets a score of 45.3 k points while the i5-2300 gets 52.9 k points.

Summarizing, the i5-2300 is 1.2 times faster than the i7-920 . 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
Nehalem Westmere
Base frecuency
2.667 GHz
2.8 GHz
Boost frecuency
2.993 GHz
3.1 GHz
Socket
LGA 1366
LGA 1155
Cores/Threads
4/8
4/4
TDP
130 W
95 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
November 2008
May 2011
Mean monothread perf.
16.33k points
24.53k points
Mean multithread perf.
47.2k points
79.46k points

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
i7-920
i5-2300
Test#1 (Integers)
1.97k
2.52k (x1.28)
Test#2 (FP)
4.43k
7.01k (x1.58)
Test#3 (Generic, ZIP)
2.75k
3.77k (x1.37)
Test#1 (Memory)
2.53k
4.22k (x1.67)
TOTAL
11.68k
17.53k (x1.5)

Multithread

i7-920

i5-2300
Test#1 (Integers)
7.71k
9.46k (x1.23)
Test#2 (FP)
18.81k
26.25k (x1.4)
Test#3 (Generic, ZIP)
13.76k
14.1k (x1.02)
Test#1 (Memory)
5.07k
3.13k (x0.62)
TOTAL
45.34k
52.93k (x1.17)

Performance/W
i7-920
i5-2300
Test#1 (Integers)
59 points/W
100 points/W
Test#2 (FP)
145 points/W
276 points/W
Test#3 (Generic, ZIP)
106 points/W
148 points/W
Test#1 (Memory)
39 points/W
33 points/W
TOTAL
349 points/W
557 points/W

Performance/GHz
i7-920
i5-2300
Test#1 (Integers)
657 points/GHz
813 points/GHz
Test#2 (FP)
1481 points/GHz
2262 points/GHz
Test#3 (Generic, ZIP)
920 points/GHz
1217 points/GHz
Test#1 (Memory)
846 points/GHz
1361 points/GHz
TOTAL
3904 points/GHz
5654 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