Core i7-640LM vs Xeon E5645
Description
Both models i7-640LM and E5645 are based on Westmere architecture.
Using the multithread performance as a reference, the i7-640LM gets a score of 31.7 k points while the E5645 gets 77 k points.
Summarizing, the E5645 is 2.4 times faster than the i7-640LM. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-640LM gets a score of 31.7 k points while the E5645 gets 77 k points.
Summarizing, the E5645 is 2.4 times faster than the i7-640LM. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
20655
206c2
Core
Calpella
Westmere-EP
Base frecuency
2.133 GHz
2.4 GHz
Boost frecuency
2.667 GHz
2.8 GHz
Socket
BGA1288
LGA 1366
Cores/Threads
2/4
6 /6
TDP
25 W
80 W
Cache L1 (d+i)
2x32+2x32 kB
64 kB
Cache L2
2x256 kB
256 kB
Cache L3
4096 kB
12288 kB
Date
January 2010
March 2010
Mean monothread perf.
16.35k points
15.64k points
Mean multithread perf.
31.74k points
76.96k 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
i7-640LM
E5645
Test#1 (Integers)
7.01k
6.47k (x0.92)
Test#2 (FP)
4.58k
4.4k (x0.96)
Test#3 (Generic, ZIP)
2.73k
2.43k (x0.89)
Test#1 (Memory)
2.03k
2.33k (x1.15)
TOTAL
16.35k
15.64k (x0.96)
Multithread
i7-640LM
E5645
Test#1 (Integers)
12.93k
34.43k (x2.66)
Test#2 (FP)
10.21k
24.23k (x2.37)
Test#3 (Generic, ZIP)
6.22k
14.48k (x2.33)
Test#1 (Memory)
2.37k
3.81k (x1.61)
TOTAL
31.74k
76.96k (x2.42)
Performance/W
i7-640LM
E5645
Test#1 (Integers)
517 points/W
430 points/W
Test#2 (FP)
409 points/W
303 points/W
Test#3 (Generic, ZIP)
249 points/W
181 points/W
Test#1 (Memory)
95 points/W
48 points/W
TOTAL
1269 points/W
962 points/W
Performance/GHz
i7-640LM
E5645
Test#1 (Integers)
2627 points/GHz
2311 points/GHz
Test#2 (FP)
1718 points/GHz
1573 points/GHz
Test#3 (Generic, ZIP)
1024 points/GHz
867 points/GHz
Test#1 (Memory)
762 points/GHz
833 points/GHz
TOTAL
6130 points/GHz
5584 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