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Core 2 Quad Q6700 vs Core 2 Duo P8400


Description
Both models Q6700 and P8400 are based on Core architecture.



Using the multithread performance as a reference, the Q6700 gets a score of 19.8 k points while the P8400 gets 21 k points.

Summarizing, the P8400 is 1.1 times faster than the Q6700. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
6fb
10676
Core
Kentsfield
Peryn-3M
Architecture
Base frecuency
2.666 GHz
2.267 GHz
Socket
LGA 775
Socket P
Cores/Threads
4/4
2/2
TDP
95 W
25 W
Cache L1 (d+i)
4x32+4x32 kB
2x32 kB
Cache L2
8192 kB
3072 kB
Cache L3
kB
0 kB
Date
April 2007
July 2008
Mean monothread perf.
10.05k points
11.38k points
Mean multithread perf.
19.77k points
21.02k 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
Q6700
P8400
Test#1 (Integers)
3.06k
2.43k (x0.79)
Test#2 (FP)
2.74k
5.4k (x1.97)
Test#3 (Generic, ZIP)
2.56k
2.13k (x0.83)
Test#1 (Memory)
1.68k
1.43k (x0.85)
TOTAL
10.05k
11.38k (x1.13)

Multithread

Q6700

P8400
Test#1 (Integers)
7.28k
4.81k (x0.66)
Test#2 (FP)
5.83k
10.58k (x1.81)
Test#3 (Generic, ZIP)
5.13k
4.18k (x0.81)
Test#1 (Memory)
1.53k
1.45k (x0.95)
TOTAL
19.77k
21.02k (x1.06)

Performance/W
Q6700
P8400
Test#1 (Integers)
77 points/W
193 points/W
Test#2 (FP)
61 points/W
423 points/W
Test#3 (Generic, ZIP)
54 points/W
167 points/W
Test#1 (Memory)
16 points/W
58 points/W
TOTAL
208 points/W
841 points/W

Performance/GHz
Q6700
P8400
Test#1 (Integers)
1146 points/GHz
1071 points/GHz
Test#2 (FP)
1029 points/GHz
2383 points/GHz
Test#3 (Generic, ZIP)
962 points/GHz
938 points/GHz
Test#1 (Memory)
632 points/GHz
629 points/GHz
TOTAL
3768 points/GHz
5022 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