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Core i7-720QM vs Core 2 Duo E8500


Description
The i7-720QM is based on Nehalem architecture while the E8500 is based on Core.

Using the multithread performance as a reference, the i7-720QM gets a score of 38.8 k points while the E8500 gets 31.2 k points.

Summarizing, the i7-720QM is 1.2 times faster than the E8500 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106e5
1067a
Core
Clarksfield
Wolfdale
Architecture
Base frecuency
1.6 GHz
3.167 GHz
Boost frecuency
2.8 GHz
3.167 GHz
Socket
988-pin micro-FCPGA8
LGA 775
Cores/Threads
4/8
2/2
TDP
45 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
6144 kB
Cache L3
6144 kB
kB
Date
September 2009
August 2008
Mean monothread perf.
13.13k points
19.46k points
Mean multithread perf.
38.78k points
31.21k 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
i7-720QM
E8500
Test#1 (Integers)
5.49k
3.65k (x0.66)
Test#2 (FP)
3.55k
8.07k (x2.28)
Test#3 (Generic, ZIP)
2.01k
3.15k (x1.57)
Test#1 (Memory)
2.09k
4.59k (x2.2)
TOTAL
13.13k
19.46k (x1.48)

Multithread

i7-720QM

E8500
Test#1 (Integers)
15.06k
7.11k (x0.47)
Test#2 (FP)
12.15k
15.79k (x1.3)
Test#3 (Generic, ZIP)
7.18k
6.2k (x0.86)
Test#1 (Memory)
4.39k
2.13k (x0.48)
TOTAL
38.78k
31.21k (x0.8)

Performance/W
i7-720QM
E8500
Test#1 (Integers)
335 points/W
109 points/W
Test#2 (FP)
270 points/W
243 points/W
Test#3 (Generic, ZIP)
160 points/W
95 points/W
Test#1 (Memory)
98 points/W
33 points/W
TOTAL
862 points/W
480 points/W

Performance/GHz
i7-720QM
E8500
Test#1 (Integers)
1962 points/GHz
1151 points/GHz
Test#2 (FP)
1267 points/GHz
2549 points/GHz
Test#3 (Generic, ZIP)
717 points/GHz
994 points/GHz
Test#1 (Memory)
745 points/GHz
1450 points/GHz
TOTAL
4691 points/GHz
6144 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