Core 2 Quad Q9550 vs Q8400
Description
Both models Q9550 and Q8400 are based on Core architecture.
Using the multithread performance as a reference, the Q9550 gets a score of 49 k points while the Q8400 gets 51.9 k points.
Summarizing, the Q8400 is 1.1 times faster than the Q9550 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the Q9550 gets a score of 49 k points while the Q8400 gets 51.9 k points.
Summarizing, the Q8400 is 1.1 times faster than the Q9550 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
1067a
1067a
Core
Yorkfield
Yorkfield
Base frecuency
2.833 GHz
2.666 GHz
Socket
LGA 775
LGA 775
Cores/Threads
4/4
4/4
TDP
95 W
95 W
Cache L1 (d+i)
128+128 kB
128+128 kB
Cache L2
12288 kB
4096 kB
Date
March 2008
April 2009
Mean monothread perf.
17.29k points
14.04k points
Mean multithread perf.
48.98k 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
Q9550
Q8400
Test#1 (Integers)
2.6k
2.44k (x0.94)
Test#2 (FP)
6.67k
6.24k (x0.93)
Test#3 (Generic, ZIP)
2.72k
2.62k (x0.96)
Test#1 (Memory)
4.43k
1.43k (x0.32)
TOTAL
16.42k
12.73k (x0.77)
Multithread
Q9550
Q8400
Test#1 (Integers)
9.92k
9.71k (x0.98)
Test#2 (FP)
25.37k
24.81k (x0.98)
Test#3 (Generic, ZIP)
10.31k
10.51k (x1.02)
Test#1 (Memory)
3.37k
2.03k (x0.6)
TOTAL
48.96k
47.05k (x0.96)
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
Q9550
Q8400
Test#1 (Integers)
3.28k
3.08k (x0.94)
Test#2 (FP)
7.28k
6.8k (x0.93)
Test#3 (Generic, ZIP)
2.83k
2.73k (x0.96)
Test#1 (Memory)
3.9k
1.42k (x0.36)
TOTAL
17.29k
14.04k (x0.81)
Multithread
Q9550
Q8400
Test#1 (Integers)
11.72k
12.25k (x1.04)
Test#2 (FP)
24.91k
26.84k (x1.08)
Test#3 (Generic, ZIP)
9.77k
10.82k (x1.11)
Test#1 (Memory)
2.57k
2.02k (x0.78)
TOTAL
48.98k
51.92k (x1.06)
Performance/W
Q9550
Q8400
Test#1 (Integers)
123 points/W
129 points/W
Test#2 (FP)
262 points/W
283 points/W
Test#3 (Generic, ZIP)
103 points/W
114 points/W
Test#1 (Memory)
27 points/W
21 points/W
TOTAL
516 points/W
547 points/W
Performance/GHz
Q9550
Q8400
Test#1 (Integers)
1159 points/GHz
1157 points/GHz
Test#2 (FP)
2568 points/GHz
2551 points/GHz
Test#3 (Generic, ZIP)
1001 points/GHz
1025 points/GHz
Test#1 (Memory)
1375 points/GHz
532 points/GHz
TOTAL
6103 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4