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Core 2 Duo E6550 vs Core i7-720QM


Description
The E6550 is based on Core architecture while the i7-720QM is based on Nehalem.

Using the multithread performance as a reference, the E6550 gets a score of 16.4 k points while the i7-720QM gets 38.8 k points.

Summarizing, the i7-720QM is 2.4 times faster than the E6550 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
6fb
106e5
Core
Conroe
Clarksfield
Architecture
Base frecuency
2.333 GHz
1.6 GHz
Boost frecuency
2.333 GHz
2.8 GHz
Socket
LGA 775
988-pin micro-FCPGA8
Cores/Threads
2/2
4/8
TDP
65 W
45 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
4096 kB
4x256 kB
Cache L3
0 kB
6144 kB
Date
July 2007
September 2009
Mean monothread perf.
10.31k points
13.13k points
Mean multithread perf.
16.38k points
38.78k 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
E6550
i7-720QM
Test#1 (Integers)
2.34k
1.49k (x0.64)
Test#2 (FP)
2.34k
3.4k (x1.45)
Test#3 (Generic, ZIP)
2.35k
1.95k (x0.83)
Test#1 (Memory)
2.72k
2.08k (x0.76)
TOTAL
9.75k
8.92k (x0.92)

Multithread

E6550

i7-720QM
Test#1 (Integers)
4.67k
4.23k (x0.9)
Test#2 (FP)
4.68k
11.4k (x2.44)
Test#3 (Generic, ZIP)
4.71k
7.17k (x1.52)
Test#1 (Memory)
1.26k
4.51k (x3.58)
TOTAL
15.32k
27.32k (x1.78)

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
E6550
i7-720QM
Test#1 (Integers)
2.7k
5.49k (x2.04)
Test#2 (FP)
2.43k
3.55k (x1.46)
Test#3 (Generic, ZIP)
2.44k
2.01k (x0.82)
Test#1 (Memory)
2.74k
2.09k (x0.76)
TOTAL
10.31k
13.13k (x1.27)

Multithread

E6550

i7-720QM
Test#1 (Integers)
5.39k
15.06k (x2.79)
Test#2 (FP)
4.85k
12.15k (x2.51)
Test#3 (Generic, ZIP)
4.89k
7.18k (x1.47)
Test#1 (Memory)
1.26k
4.39k (x3.5)
TOTAL
16.38k
38.78k (x2.37)

Performance/W
E6550
i7-720QM
Test#1 (Integers)
83 points/W
335 points/W
Test#2 (FP)
75 points/W
270 points/W
Test#3 (Generic, ZIP)
75 points/W
160 points/W
Test#1 (Memory)
19 points/W
98 points/W
TOTAL
252 points/W
862 points/W

Performance/GHz
E6550
i7-720QM
Test#1 (Integers)
1156 points/GHz
1962 points/GHz
Test#2 (FP)
1041 points/GHz
1267 points/GHz
Test#3 (Generic, ZIP)
1047 points/GHz
717 points/GHz
Test#1 (Memory)
1173 points/GHz
745 points/GHz
TOTAL
4417 points/GHz
4691 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