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Xeon E5472 vs Core 2 Quad Q8400


Description
Both models E5472 and Q8400 are based on Core architecture.



Using the multithread performance as a reference, the E5472 gets a score of 48.6 k points while the Q8400 gets 51.9 k points.

Summarizing, the Q8400 is 1.1 times faster than the E5472. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
10676
1067a
Core
Harpertown
Yorkfield
Architecture
Base frecuency
3 GHz
2.666 GHz
Socket
LGA-771
LGA 775
Cores/Threads
4/4
4/4
TDP
80 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
128+128 kB
Cache L2
2x6144 kB
4096 kB
Cache L3
kB
0 kB
Date
November 2007
April 2009
Mean monothread perf.
16.62k points
14.04k points
Mean multithread perf.
48.62k points
51.92k 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
E5472
Q8400
Test#1 (Integers)
2.29k
2.44k (x1.07)
Test#2 (FP)
5.85k
6.24k (x1.07)
Test#3 (Generic, ZIP)
2.44k
2.62k (x1.07)
Test#1 (Memory)
4.81k
1.43k (x0.3)
TOTAL
15.39k
12.73k (x0.83)

Multithread

E5472

Q8400
Test#1 (Integers)
9.06k
9.71k (x1.07)
Test#2 (FP)
23.09k
24.81k (x1.07)
Test#3 (Generic, ZIP)
9.7k
10.51k (x1.08)
Test#1 (Memory)
2.53k
2.03k (x0.8)
TOTAL
44.38k
47.05k (x1.06)

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
E5472
Q8400
Test#1 (Integers)
2.88k
3.08k (x1.07)
Test#2 (FP)
6.36k
6.8k (x1.07)
Test#3 (Generic, ZIP)
2.55k
2.73k (x1.07)
Test#1 (Memory)
4.83k
1.42k (x0.29)
TOTAL
16.62k
14.04k (x0.84)

Multithread

E5472

Q8400
Test#1 (Integers)
11.19k
12.25k (x1.09)
Test#2 (FP)
24.85k
26.84k (x1.08)
Test#3 (Generic, ZIP)
10.04k
10.82k (x1.08)
Test#1 (Memory)
2.54k
2.02k (x0.79)
TOTAL
48.62k
51.92k (x1.07)

Performance/W
E5472
Q8400
Test#1 (Integers)
140 points/W
129 points/W
Test#2 (FP)
311 points/W
283 points/W
Test#3 (Generic, ZIP)
125 points/W
114 points/W
Test#1 (Memory)
32 points/W
21 points/W
TOTAL
608 points/W
547 points/W

Performance/GHz
E5472
Q8400
Test#1 (Integers)
961 points/GHz
1157 points/GHz
Test#2 (FP)
2119 points/GHz
2551 points/GHz
Test#3 (Generic, ZIP)
850 points/GHz
1025 points/GHz
Test#1 (Memory)
1610 points/GHz
532 points/GHz
TOTAL
5539 points/GHz
5265 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