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Core 2 Duo E8400 vs Xeon E5506


Description
The E8400 is based on Core architecture while the E5506 is based on Nehalem.

Using the multithread performance as a reference, the E8400 gets a score of 27.1 k points while the E5506 gets 90.4 k points.

Summarizing, the E5506 is 3.3 times faster than the E8400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
1067a
106a5
Core
Wolfdale
Gainestown
Architecture
Base frecuency
3 GHz
2.133 GHz
Socket
LGA 775
LGA 1366
Cores/Threads
2/2
4 /4
TDP
65 W
80 W
Cache L1 (d+i)
2x32+2x32 kB
64 kB
Cache L2
6144 kB
256 kB
Cache L3
0 kB
4096 kB
Date
January 2008
March 2009
Mean monothread perf.
17.28k points
9.97k points
Mean multithread perf.
27.11k points
90.45k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
E8400
E5506
Test#1 (Integers)
2.47k
1.21k (x0.49)
Test#2 (FP)
6.74k
2.75k (x0.41)
Test#3 (Generic, ZIP)
2.87k
1.94k (x0.68)
Test#1 (Memory)
4.47k
0.78k (x0.17)
TOTAL
16.55k
6.68k (x0.4)

Multithread

E8400

E5506
Test#1 (Integers)
4.64k
12.25k (x2.64)
Test#2 (FP)
12.36k
25.55k (x2.07)
Test#3 (Generic, ZIP)
4.86k
17.1k (x3.52)
Test#1 (Memory)
1.96k
5.01k (x2.55)
TOTAL
23.82k
59.9k (x2.51)

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
E8400
E5506
Test#1 (Integers)
3.3k
4.48k (x1.36)
Test#2 (FP)
7.28k
2.99k (x0.41)
Test#3 (Generic, ZIP)
2.88k
1.81k (x0.63)
Test#1 (Memory)
3.83k
0.69k (x0.18)
TOTAL
17.28k
9.97k (x0.58)

Multithread

E8400

E5506
Test#1 (Integers)
6.3k
41k (x6.51)
Test#2 (FP)
13.71k
28.17k (x2.05)
Test#3 (Generic, ZIP)
5.32k
17.4k (x3.27)
Test#1 (Memory)
1.78k
3.88k (x2.18)
TOTAL
27.11k
90.45k (x3.34)

Performance/W
E8400
E5506
Test#1 (Integers)
97 points/W
513 points/W
Test#2 (FP)
211 points/W
352 points/W
Test#3 (Generic, ZIP)
82 points/W
217 points/W
Test#1 (Memory)
27 points/W
48 points/W
TOTAL
417 points/W
1131 points/W

Performance/GHz
E8400
E5506
Test#1 (Integers)
1099 points/GHz
2099 points/GHz
Test#2 (FP)
2426 points/GHz
1404 points/GHz
Test#3 (Generic, ZIP)
959 points/GHz
847 points/GHz
Test#1 (Memory)
1278 points/GHz
325 points/GHz
TOTAL
5762 points/GHz
4675 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