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Xeon E5645 vs A6 3500


Description
The E5645 is based on Westmere architecture while the 3500 is based on K10.

Using the multithread performance as a reference, the E5645 gets a score of 77 k points while the 3500 gets 32.7 k points.

Summarizing, the E5645 is 2.4 times faster than the 3500. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206c2
300f10
Core
Westmere-EP
Llano
Architecture
Base frecuency
2.4 GHz
2.1 GHz
Boost frecuency
2.8 GHz
2.4 GHz
Socket
LGA 1366
Socket FM1
Cores/Threads
6 /6
3/3
TDP
80 W
65 W
Cache L1 (d+i)
64 kB
3x64+3x64 kB
Cache L2
256 kB
3x1024 kB
Cache L3
12288 kB
0 kB
Date
March 2010
August 2011
Mean monothread perf.
15.64k points
13.65k points
Mean multithread perf.
76.96k points
32.72k 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
3500
Test#1 (Integers)
6.47k
4.75k (x0.73)
Test#2 (FP)
4.4k
4.72k (x1.07)
Test#3 (Generic, ZIP)
2.43k
2.49k (x1.03)
Test#1 (Memory)
2.33k
1.69k (x0.72)
TOTAL
15.64k
13.65k (x0.87)

Multithread

E5645

3500
Test#1 (Integers)
34.43k
12.56k (x0.36)
Test#2 (FP)
24.23k
12.58k (x0.52)
Test#3 (Generic, ZIP)
14.48k
6.08k (x0.42)
Test#1 (Memory)
3.81k
1.49k (x0.39)
TOTAL
76.96k
32.72k (x0.43)

Performance/W
E5645
3500
Test#1 (Integers)
430 points/W
193 points/W
Test#2 (FP)
303 points/W
194 points/W
Test#3 (Generic, ZIP)
181 points/W
93 points/W
Test#1 (Memory)
48 points/W
23 points/W
TOTAL
962 points/W
503 points/W

Performance/GHz
E5645
3500
Test#1 (Integers)
2311 points/GHz
1978 points/GHz
Test#2 (FP)
1573 points/GHz
1966 points/GHz
Test#3 (Generic, ZIP)
867 points/GHz
1039 points/GHz
Test#1 (Memory)
833 points/GHz
704 points/GHz
TOTAL
5584 points/GHz
5686 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