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Core i7-720QM vs Pentium G850


Description
The i7-720QM is based on Nehalem architecture while the G850 is based on Sandy Bridge.

Using the multithread performance as a reference, the i7-720QM gets a score of 38.8 k points while the G850 gets 40.5 k points.

Summarizing, the G850 is 1 times faster than the i7-720QM. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106e5
206a7
Core
Clarksfield
Sandy Bridge
Architecture
Base frecuency
1.6 GHz
2.9 GHz
Boost frecuency
2.8 GHz
2.9 GHz
Socket
988-pin micro-FCPGA8
LGA 1155
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
256 kB
Cache L3
6144 kB
3072 kB
Date
September 2009
May 2012
Mean monothread perf.
13.13k points
21.85k points
Mean multithread perf.
38.78k points
40.5k 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
G850
Test#1 (Integers)
5.49k
8.77k (x1.6)
Test#2 (FP)
3.55k
7.08k (x2)
Test#3 (Generic, ZIP)
2.01k
3.72k (x1.85)
Test#1 (Memory)
2.09k
2.28k (x1.09)
TOTAL
13.13k
21.85k (x1.66)

Multithread

i7-720QM

G850
Test#1 (Integers)
15.06k
17.5k (x1.16)
Test#2 (FP)
12.15k
13.48k (x1.11)
Test#3 (Generic, ZIP)
7.18k
7.32k (x1.02)
Test#1 (Memory)
4.39k
2.19k (x0.5)
TOTAL
38.78k
40.5k (x1.04)

Performance/W
i7-720QM
G850
Test#1 (Integers)
335 points/W
269 points/W
Test#2 (FP)
270 points/W
207 points/W
Test#3 (Generic, ZIP)
160 points/W
113 points/W
Test#1 (Memory)
98 points/W
34 points/W
TOTAL
862 points/W
623 points/W

Performance/GHz
i7-720QM
G850
Test#1 (Integers)
1962 points/GHz
3025 points/GHz
Test#2 (FP)
1267 points/GHz
2440 points/GHz
Test#3 (Generic, ZIP)
717 points/GHz
1283 points/GHz
Test#1 (Memory)
745 points/GHz
787 points/GHz
TOTAL
4691 points/GHz
7534 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