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Core 2 Quad Q6600 vs Xeon E5645


Description
The Q6600 is based on Core architecture while the E5645 is based on Westmere.

Using the multithread performance as a reference, the Q6600 gets a score of 30.6 k points while the E5645 gets 77 k points.

Summarizing, the E5645 is 2.5 times faster than the Q6600. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
6fb
206c2
Core
Kentsfield
Westmere-EP
Architecture
Base frecuency
2.4 GHz
2.4 GHz
Boost frecuency
2.4 GHz
2.8 GHz
Socket
LGA 775
LGA 1366
Cores/Threads
4/4
6 /6
TDP
95 W
80 W
Cache L1 (d+i)
4x32+4x32 kB
64 kB
Cache L2
8192 kB
256 kB
Cache L3
kB
12288 kB
Date
July 2007
March 2010
Mean monothread perf.
8.92k points
15.64k points
Mean multithread perf.
30.64k 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
Q6600
E5645
Test#1 (Integers)
2.78k
6.47k (x2.33)
Test#2 (FP)
2.49k
4.4k (x1.77)
Test#3 (Generic, ZIP)
2.37k
2.43k (x1.03)
Test#1 (Memory)
1.29k
2.33k (x1.8)
TOTAL
8.92k
15.64k (x1.75)

Multithread

Q6600

E5645
Test#1 (Integers)
10.9k
34.43k (x3.16)
Test#2 (FP)
9.79k
24.23k (x2.47)
Test#3 (Generic, ZIP)
9.11k
14.48k (x1.59)
Test#1 (Memory)
0.84k
3.81k (x4.54)
TOTAL
30.64k
76.96k (x2.51)

Performance/W
Q6600
E5645
Test#1 (Integers)
115 points/W
430 points/W
Test#2 (FP)
103 points/W
303 points/W
Test#3 (Generic, ZIP)
96 points/W
181 points/W
Test#1 (Memory)
9 points/W
48 points/W
TOTAL
323 points/W
962 points/W

Performance/GHz
Q6600
E5645
Test#1 (Integers)
1157 points/GHz
2311 points/GHz
Test#2 (FP)
1036 points/GHz
1573 points/GHz
Test#3 (Generic, ZIP)
986 points/GHz
867 points/GHz
Test#1 (Memory)
539 points/GHz
833 points/GHz
TOTAL
3718 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.


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