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Xeon E5504 vs Core 2 Quad Q8400


Description
The E5504 is based on Nehalem architecture while the Q8400 is based on Core.

Using the multithread performance as a reference, the E5504 gets a score of 42 k points while the Q8400 gets 51.9 k points.

Summarizing, the Q8400 is 1.2 times faster than the E5504 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106a5
1067a
Core
Gainestown
Yorkfield
Architecture
Base frecuency
2 GHz
2.666 GHz
Socket
LGA 1366
LGA 775
Cores/Threads
4 /4
4/4
TDP
80 W
95 W
Cache L1 (d+i)
64 kB
128+128 kB
Cache L2
256 kB
4096 kB
Cache L3
4096 kB
0 kB
Date
March 2009
April 2009
Mean monothread perf.
10.92k points
14.04k points
Mean multithread perf.
41.95k points
51.92k 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
E5504
Q8400
Test#1 (Integers)
4.57k
3.08k (x0.67)
Test#2 (FP)
3.07k
6.8k (x2.22)
Test#3 (Generic, ZIP)
1.85k
2.73k (x1.48)
Test#1 (Memory)
1.43k
1.42k (x0.99)
TOTAL
10.92k
14.04k (x1.29)

Multithread

E5504

Q8400
Test#1 (Integers)
19.07k
12.25k (x0.64)
Test#2 (FP)
12.52k
26.84k (x2.14)
Test#3 (Generic, ZIP)
7.97k
10.82k (x1.36)
Test#1 (Memory)
2.39k
2.02k (x0.84)
TOTAL
41.95k
51.92k (x1.24)

Performance/W
E5504
Q8400
Test#1 (Integers)
238 points/W
129 points/W
Test#2 (FP)
157 points/W
283 points/W
Test#3 (Generic, ZIP)
100 points/W
114 points/W
Test#1 (Memory)
30 points/W
21 points/W
TOTAL
524 points/W
547 points/W

Performance/GHz
E5504
Q8400
Test#1 (Integers)
2287 points/GHz
1157 points/GHz
Test#2 (FP)
1535 points/GHz
2551 points/GHz
Test#3 (Generic, ZIP)
926 points/GHz
1025 points/GHz
Test#1 (Memory)
713 points/GHz
532 points/GHz
TOTAL
5460 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