Intel Core 2 Duo T6400 vs Intel Core 2 Duo T9550
Intel Core 2 Duo T6400
► remove from comparisonThe Intel Core 2 Duo T6400 is an entry level dual core processor for cheap laptops. It is based on the Penryn core but offers only 2 MB level 2 cache and a slow clock speed of 2 GHz. The performance should be sufficient for office and other casual tasks but high level gaming and HD video editing for example could be limited by the CPU performance.
Intel Core 2 Duo T9550
► remove from comparison
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).
Model | Intel Core 2 Duo T6400 | Intel Core 2 Duo T9550 |
Codename | Penryn | Penryn |
Series | Intel Core 2 Duo | Intel Core 2 Duo |
Series: Core 2 Duo Penryn | ||
Clock | 2000 MHz | 2660 MHz |
FSB | 800 | 1066 |
L2 Cache | 2 MB | 6 MB |
Cores / Threads | 2 / 2 | 2 / 2 |
TDP | 35 Watt | 35 Watt |
Technology | 45 nm | 45 nm |
max. Temp. | 105 °C | 105 °C |
Socket | PGA478 | BGA479, PGA478 |
Features | MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), IDA (Intel Dynamic Acceleration) | Virtualization, Trusted Execution, Intel 64, Enhanced Speedstep (up to C6), ExBit, SSE4.1 |
Architecture | x86 | x86 |
Announced | ||
Manufacturer | ark.intel.com | ark.intel.com |
L1 Cache | 128 KB | |
Transistors | 410 Million | |
Voltage | 1.05-1.212V V | |
Die Size | 107 mm2 | |
$316 U.S. |
Benchmarks
Average Benchmarks Intel Core 2 Duo T6400 → 100% n=13
Average Benchmarks Intel Core 2 Duo T9550 → 136% n=13

* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation