Core i7-640LM vs Xeon E5-4640
Description
The i7-640LM is based on Westmere architecture while the E5-4640 is based on Sandy Bridge.
Using the multithread performance as a reference, the i7-640LM gets a score of 31.7 k points while the E5-4640 gets 581.6 k points.
Summarizing, the E5-4640 is 18.3 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 E5-4640 gets 581.6 k points.
Summarizing, the E5-4640 is 18.3 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
206d7
Core
Calpella
Sandy Bridge-EP
Base frecuency
2.133 GHz
2.4 GHz
Boost frecuency
2.667 GHz
2.8 GHz
Socket
BGA1288
LGA 2011
Cores/Threads
2/4
8 /16
TDP
25 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
8x32+8x32 kB
Cache L2
2x256 kB
8x256 kB
Cache L3
4096 kB
20480 kB
Date
January 2010
May 2012
Mean monothread perf.
16.35k points
13.88k points
Mean multithread perf.
31.74k points
610.16k 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
E5-4640
Test#1 (Integers)
7.01k
6.19k (x0.88)
Test#2 (FP)
4.58k
5.89k (x1.29)
Test#3 (Generic, ZIP)
2.73k
2.11k (x0.77)
Test#1 (Memory)
2.03k
2.51k (x1.23)
TOTAL
16.35k
16.7k (x1.02)
Multithread
i7-640LM
E5-4640
Test#1 (Integers)
12.93k
244.88k (x18.94)
Test#2 (FP)
10.21k
215.35k (x21.09)
Test#3 (Generic, ZIP)
6.22k
114.64k (x18.42)
Test#1 (Memory)
2.37k
6.76k (x2.86)
TOTAL
31.74k
581.63k (x18.33)
Performance/W
i7-640LM
E5-4640
Test#1 (Integers)
517 points/W
2578 points/W
Test#2 (FP)
409 points/W
2267 points/W
Test#3 (Generic, ZIP)
249 points/W
1207 points/W
Test#1 (Memory)
95 points/W
71 points/W
TOTAL
1269 points/W
6122 points/W
Performance/GHz
i7-640LM
E5-4640
Test#1 (Integers)
2627 points/GHz
2210 points/GHz
Test#2 (FP)
1718 points/GHz
2105 points/GHz
Test#3 (Generic, ZIP)
1024 points/GHz
755 points/GHz
Test#1 (Memory)
762 points/GHz
895 points/GHz
TOTAL
6130 points/GHz
5966 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