Xeon E5645 vs Core i7-640LM
Description
Both models E5645 and i7-640LM are based on Westmere architecture.
Using the multithread performance as a reference, the E5645 gets a score of 77 k points while the i7-640LM gets 31.7 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 E5645 gets a score of 77 k points while the i7-640LM gets 31.7 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
206c2
20655
Core
Westmere-EP
Calpella
Base frecuency
2.4 GHz
2.133 GHz
Boost frecuency
2.8 GHz
2.667 GHz
Socket
LGA 1366
BGA1288
Cores/Threads
6 /6
2/4
TDP
80 W
25 W
Cache L1 (d+i)
64 kB
2x32+2x32 kB
Cache L2
256 kB
2x256 kB
Cache L3
12288 kB
4096 kB
Date
March 2010
January 2010
Mean monothread perf.
15.64k points
16.35k points
Mean multithread perf.
76.96k points
31.74k 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
E5645
i7-640LM
Test#1 (Integers)
6.47k
7.01k (x1.08)
Test#2 (FP)
4.4k
4.58k (x1.04)
Test#3 (Generic, ZIP)
2.43k
2.73k (x1.12)
Test#1 (Memory)
2.33k
2.03k (x0.87)
TOTAL
15.64k
16.35k (x1.05)
Multithread
E5645
i7-640LM
Test#1 (Integers)
34.43k
12.93k (x0.38)
Test#2 (FP)
24.23k
10.21k (x0.42)
Test#3 (Generic, ZIP)
14.48k
6.22k (x0.43)
Test#1 (Memory)
3.81k
2.37k (x0.62)
TOTAL
76.96k
31.74k (x0.41)
Performance/W
E5645
i7-640LM
Test#1 (Integers)
430 points/W
517 points/W
Test#2 (FP)
303 points/W
409 points/W
Test#3 (Generic, ZIP)
181 points/W
249 points/W
Test#1 (Memory)
48 points/W
95 points/W
TOTAL
962 points/W
1269 points/W
Performance/GHz
E5645
i7-640LM
Test#1 (Integers)
2311 points/GHz
2627 points/GHz
Test#2 (FP)
1573 points/GHz
1718 points/GHz
Test#3 (Generic, ZIP)
867 points/GHz
1024 points/GHz
Test#1 (Memory)
833 points/GHz
762 points/GHz
TOTAL
5584 points/GHz
6130 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