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Intel Core 2 Duo P8400 vs Intel Core 2 Duo T9550

Intel Core 2 Duo P8400

► remove from comparison Intel P8400

The Intel Core 2 Duo P8400 is a dual core processor for laptops. It features 2.26 GHz and a shared level 2 cache of 3 MB. Due to the smaller cache (Core 2 Duo T-Models got usually 6 MB at this clock rate), the TDP is only 25 Watt (instead of the 35 Watt of the T-models).

The performance of the P8400 is on par with the fast Turion II Ultra with about 2.4 to 2.6 GHz. Modern demanding games like Supreme Commander may be limited by the CPU performance. High end gamers should choose a higher clocked Core 2 Duo (or Core i5 / i7).

The P8400 uses a Penryn (Montevina Update) core that features 2 integer units, 1 floating point unit, 1 load unit, and 1 store unit in a 14-stages long pipeline. Due to the Wide Dynamic Execution Technology, the core is able to simultaneously execute up to four instructions.

The integrated Enhanced Speedstep is able to downclock the core dynamically as low as 800 MHz to save power (in idle mode).

The Core 2 Duo P8400 can be used in a Socket P socket with 479 pins: Socket P / Micro Flip-Chip Pin Grid Array (Micro-FCPGA) requires 479-pin surface mount Zero Insertion Force (ZIF) socket (mPGA479M socket) or Micro Flip-Chip Ball Grid Array (Micro-FCBGA) for surface mount (479-ball)

Intel Core 2 Duo T9550

► remove from comparison Intel T9550

The Intel Core 2 Duo T9550 was the middle class dual core CPU for laptops at the time of introduction. It is similar to the Core 2 Duo P9600 except for the higher TDP of 35 versus 25 Watt.

Due to the relatively high clock speed and 6MB Level 2 cache, the T9550 offers enough performance for demanding games (in 2009) and applications. 

The T9550 uses a Penryn (Montevina Update) core that features 2 integer units, 1 floating point unit, 1 load unit, and 1 store unit in a 14-stages long pipeline. Due to the Wide Dynamic Execution Technology, the core is able to simultaneously execute up to four instructions.

The integrated Enhanced Speedstep is able to downclock the core dynamically to save power (in idle mode).

ModelIntel Core 2 Duo P8400Intel Core 2 Duo T9550
SeriesIntel Core 2 DuoIntel Core 2 Duo
CodenamePenrynPenryn
Series: Core 2 Duo Penryn
Intel Core 2 Duo T9900 compare3.06 GHz2 / 2 cores
Intel Core 2 Duo T9800 compare2.92 GHz2 / 2 cores
Intel Core 2 Duo P9700 compare2.8 GHz2 / 2 cores
Intel Core 2 Duo T9600 compare2.8 GHz2 / 2 cores
Intel Core 2 Duo P9600 compare2.66 GHz2 / 2 cores
Intel Core 2 Duo T95502.66 GHz2 / 2 cores
Intel Core 2 Duo T9500 compare2.6 GHz2 / 2 cores
Intel Core 2 Duo SP9600 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo P9500 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo T9400 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo P8800 compare2.66 GHz2 / 2 cores
Intel Core 2 Duo T9300 compare2.5 GHz2 / 2 cores
Intel Core 2 Duo P8700 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo SP9400 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo P8600 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo T8300 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo SP9300 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo P8400 « 2.26 GHz2 / 2 cores
Intel Core 2 Duo P7570 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo P7550 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo T6770 compare2.3 GHz2 / 2 cores
Intel Core 2 Duo SL9600 compare2.13 GHz2 / 2 cores
Intel Core 2 Duo P7450 compare2.13 GHz2 / 2 cores
Intel Core 2 Duo T6670 compare2.2 GHz2 / 2 cores
Intel Core 2 Duo T6600 compare2.2 GHz2 / 2 cores
Intel Core 2 Duo T8100 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo P7370 compare2 GHz2 / 2 cores
Intel Core 2 Duo P7350 compare2 GHz2 / 2 cores
Intel Core 2 Duo T6570 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo T6500 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo SL9400 compare1.86 GHz2 / 2 cores
Intel Core 2 Duo SL9380 compare1.8 GHz2 / 2 cores
Intel Core 2 Duo T6400 compare2 GHz2 / 2 cores
Intel Core 2 Duo SL9300 compare1.6 GHz2 / 2 cores
Intel Core 2 Duo SU9600 compare1.6 GHz2 / 2 cores
Intel Core 2 Duo SU9400 compare1.4 GHz2 / 2 cores
Intel Core 2 Duo SU7300 compare1.3 GHz2 / 2 cores
Intel Core 2 Duo SU9300 compare1.2 GHz2 / 2 cores
Intel Core 2 Duo T9900 compare3.06 GHz2 / 2 cores
Intel Core 2 Duo T9800 compare2.92 GHz2 / 2 cores
Intel Core 2 Duo P9700 compare2.8 GHz2 / 2 cores
Intel Core 2 Duo T9600 compare2.8 GHz2 / 2 cores
Intel Core 2 Duo P9600 compare2.66 GHz2 / 2 cores
Intel Core 2 Duo T9550 « 2.66 GHz2 / 2 cores
Intel Core 2 Duo T9500 compare2.6 GHz2 / 2 cores
Intel Core 2 Duo SP9600 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo P9500 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo T9400 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo P8800 compare2.66 GHz2 / 2 cores
Intel Core 2 Duo T9300 compare2.5 GHz2 / 2 cores
Intel Core 2 Duo P8700 compare2.53 GHz2 / 2 cores
Intel Core 2 Duo SP9400 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo P8600 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo T8300 compare2.4 GHz2 / 2 cores
Intel Core 2 Duo SP9300 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo P84002.26 GHz2 / 2 cores
Intel Core 2 Duo P7570 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo P7550 compare2.26 GHz2 / 2 cores
Intel Core 2 Duo T6770 compare2.3 GHz2 / 2 cores
Intel Core 2 Duo SL9600 compare2.13 GHz2 / 2 cores
Intel Core 2 Duo P7450 compare2.13 GHz2 / 2 cores
Intel Core 2 Duo T6670 compare2.2 GHz2 / 2 cores
Intel Core 2 Duo T6600 compare2.2 GHz2 / 2 cores
Intel Core 2 Duo T8100 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo P7370 compare2 GHz2 / 2 cores
Intel Core 2 Duo P7350 compare2 GHz2 / 2 cores
Intel Core 2 Duo T6570 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo T6500 compare2.1 GHz2 / 2 cores
Intel Core 2 Duo SL9400 compare1.86 GHz2 / 2 cores
Intel Core 2 Duo SL9380 compare1.8 GHz2 / 2 cores
Intel Core 2 Duo T6400 compare2 GHz2 / 2 cores
Intel Core 2 Duo SL9300 compare1.6 GHz2 / 2 cores
Intel Core 2 Duo SU9600 compare1.6 GHz2 / 2 cores
Intel Core 2 Duo SU9400 compare1.4 GHz2 / 2 cores
Intel Core 2 Duo SU7300 compare1.3 GHz2 / 2 cores
Intel Core 2 Duo SU9300 compare1.2 GHz2 / 2 cores
Clock2260 MHz2660 MHz
FSB10661066
L1 Cache128 KB128 KB
L2 Cache3 MB6 MB
Cores / Threads2 / 22 / 2
TDP25 Watt35 Watt
Transistors410 Million410 Million
45 nm, 1.05-1.1545 nm, 1.05-1.212V
Die Size107 mm2107 mm2
max. Temp.105 °C105 °C
SocketSocket PBGA479, PGA478
FeaturesSSE4.1, Virtualization Technology, Execute Disable Bit, Enhanced Speedstep, Ehnaced Halt State (C1E), 64 Bit, Trusted Execution TechnologyVirtualization, Trusted Execution, Intel 64, Enhanced Speedstep (up to C6), ExBit, SSE4.1
Architecturex86x86
$209 U.S.$316 U.S.
Announced
Manufacturerark.intel.comark.intel.com

Benchmarks

Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 2418     avg: 2527     median: 2497 (15%)     max: 2882 Points
min: 2911     avg: 2958     median: 2966 (18%)     max: 3001 Points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 4507     avg: 4701     median: 4630 (3%)     max: 5314 Points
min: 5418     avg: 5530     median: 5577 (4%)     max: 5615 Points
wPrime 2.10 - wPrime 2.0 32m *
34.2 s (7%)
29 s (6%)
wPrime 2.10 - wPrime 2.0 1024m *
100%
1 T9550 +
922 s (11%)
3DMark 06 - CPU - 3DMark 06 - CPU
min: 1922     avg: 2030     median: 2036 (4%)     max: 2084 Points
min: 2347     avg: 2384     median: 2385 (5%)     max: 2417 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 21.75     avg: 22.1     median: 22 (5%)     max: 22.71 s
min: 16     avg: 17     median: 17 (4%)     max: 17.91 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 50.7     avg: 51.5     median: 51.8 (2%)     max: 52.2 s
min: 40     avg: 41.6     median: 42 (2%)     max: 42.84 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
1212 s (5%)
min: 1059     avg: 1105     median: 1123 (5%)     max: 1132 s
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
21204 MIPS (10%)
min: 6820     avg: 17433     median: 20774 (10%)     max: 24706 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
15993 MFLOPS (12%)
min: 5870     avg: 14981     median: 19516 (15%)     max: 19556 MFLOPS
PCMark 05 - PCMark 05 - Standard
min: 3410     avg: 5117     median: 5201.5 (11%)     max: 6255 Points
min: 6414     avg: 6553     median: 6619 (14%)     max: 6625 Points
Windows Vista Experience Index - Windows Vista Leistungsindex - Prozessor
5.2 Points (74%)
min: 3.9     avg: 5.1     median: 5.5 (79%)     max: 5.5 Points
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 3518     avg: 4111     median: 4340 (4%)     max: 4475 Points
min: 5252     avg: 5399     median: 5424 (5%)     max: 5496 Points

Average Benchmarks Intel Core 2 Duo P8400 → 100% n=12

Average Benchmarks Intel Core 2 Duo T9550 → 111% n=12

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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show all (including archived), 2024, 2023
v1.26
log 28. 16:47:14

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#3 did not recreate cache, as it is less than 5 days old! Created at Thu, 28 Mar 2024 05:35:32 +0100 +0.001s ... 0.001s

#4 composed specs +0.023s ... 0.025s

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#6 getting avg benchmarks for device 398 +0.002s ... 0.027s

#7 got single benchmarks 398 +0.095s ... 0.122s

#8 getting avg benchmarks for device 449 +0.003s ... 0.125s

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#11 min, max, avg, median took s +0.068s ... 0.22s

#12 return log +0.022s ... 0.242s

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Redaktion, 2017-09- 8 (Update: 2023-07- 1)