| | | | | | |

Core i7-720QM vs i7-930


Description
The i7-720QM is based on Nehalem architecture while the i7-930 is based on Westmere.

Using the multithread performance as a reference, the i7-720QM gets a score of 38.8 k points while the i7-930 gets 69.4 k points.

Summarizing, the i7-930 is 1.8 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
106a5
Core
Clarksfield
Bloomfield
Architecture
Base frecuency
1.6 GHz
2.8 GHz
Boost frecuency
2.8 GHz
3.067 GHz
Socket
988-pin micro-FCPGA8
LGA 1366
Cores/Threads
4/8
4/8
TDP
45 W
130 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
8192 kB
Date
September 2009
February 2010
Mean monothread perf.
13.13k points
17.58k points
Mean multithread perf.
38.78k points
69.39k 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
i7-720QM
i7-930
Test#1 (Integers)
1.49k
1.94k (x1.3)
Test#2 (FP)
3.4k
4.38k (x1.29)
Test#3 (Generic, ZIP)
1.95k
2.64k (x1.35)
Test#1 (Memory)
2.08k
2.41k (x1.16)
TOTAL
8.92k
11.37k (x1.27)

Multithread

i7-720QM

i7-930
Test#1 (Integers)
4.23k
7.3k (x1.73)
Test#2 (FP)
11.4k
19.36k (x1.7)
Test#3 (Generic, ZIP)
7.17k
13.43k (x1.87)
Test#1 (Memory)
4.51k
2.01k (x0.45)
TOTAL
27.32k
42.11k (x1.54)

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
i7-930
Test#1 (Integers)
5.49k
7.28k (x1.32)
Test#2 (FP)
3.55k
4.82k (x1.36)
Test#3 (Generic, ZIP)
2.01k
2.86k (x1.43)
Test#1 (Memory)
2.09k
2.62k (x1.26)
TOTAL
13.13k
17.58k (x1.34)

Multithread

i7-720QM

i7-930
Test#1 (Integers)
15.06k
28.09k (x1.87)
Test#2 (FP)
12.15k
21.62k (x1.78)
Test#3 (Generic, ZIP)
7.18k
14.83k (x2.06)
Test#1 (Memory)
4.39k
4.85k (x1.1)
TOTAL
38.78k
69.39k (x1.79)

Performance/W
i7-720QM
i7-930
Test#1 (Integers)
335 points/W
216 points/W
Test#2 (FP)
270 points/W
166 points/W
Test#3 (Generic, ZIP)
160 points/W
114 points/W
Test#1 (Memory)
98 points/W
37 points/W
TOTAL
862 points/W
534 points/W

Performance/GHz
i7-720QM
i7-930
Test#1 (Integers)
1962 points/GHz
2372 points/GHz
Test#2 (FP)
1267 points/GHz
1571 points/GHz
Test#3 (Generic, ZIP)
717 points/GHz
933 points/GHz
Test#1 (Memory)
745 points/GHz
855 points/GHz
TOTAL
4691 points/GHz
5732 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