Pentium G645 vs Core i7-720QM
Description
The G645 is based on Sandy Bridge architecture while the i7-720QM is based on Nehalem.
Using the multithread performance as a reference, the G645 gets a score of 35.4 k points while the i7-720QM gets 38.8 k points.
Summarizing, the i7-720QM is 1.1 times faster than the G645 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the G645 gets a score of 35.4 k points while the i7-720QM gets 38.8 k points.
Summarizing, the i7-720QM is 1.1 times faster than the G645 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
206a7
106e5
Core
Sandy Bridge
Clarksfield
Base frecuency
2.9 GHz
1.6 GHz
Boost frecuency
2.9 GHz
2.8 GHz
Socket
LGA 1155
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
2x256 kB
4x256 kB
Cache L3
3072 kB
6144 kB
Date
September 2012
September 2009
Mean monothread perf.
22.24k points
13.13k points
Mean multithread perf.
35.38k points
38.78k 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
G645
i7-720QM
Test#1 (Integers)
8.66k
5.49k (x0.63)
Test#2 (FP)
6.9k
3.55k (x0.51)
Test#3 (Generic, ZIP)
3.48k
2.01k (x0.58)
Test#1 (Memory)
3.2k
2.09k (x0.65)
TOTAL
22.24k
13.13k (x0.59)
Multithread
G645
i7-720QM
Test#1 (Integers)
14.06k
15.06k (x1.07)
Test#2 (FP)
11.82k
12.15k (x1.03)
Test#3 (Generic, ZIP)
5.83k
7.18k (x1.23)
Test#1 (Memory)
3.69k
4.39k (x1.19)
TOTAL
35.38k
38.78k (x1.1)
Performance/W
G645
i7-720QM
Test#1 (Integers)
216 points/W
335 points/W
Test#2 (FP)
182 points/W
270 points/W
Test#3 (Generic, ZIP)
90 points/W
160 points/W
Test#1 (Memory)
57 points/W
98 points/W
TOTAL
544 points/W
862 points/W
Performance/GHz
G645
i7-720QM
Test#1 (Integers)
2987 points/GHz
1962 points/GHz
Test#2 (FP)
2380 points/GHz
1267 points/GHz
Test#3 (Generic, ZIP)
1199 points/GHz
717 points/GHz
Test#1 (Memory)
1103 points/GHz
745 points/GHz
TOTAL
7669 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4