Deutsch
Español
Français
Italiano
Nederlands
Polski
Português
Русский
Türkçe
Svenska
Chinese
MagyarIntel Core i5-470UM vs Intel Core 2 Duo T6400 vs Intel Core 2 Duo P8400
Intel Core i5-470UM
► remove from comparisonThe Intel Core i5-470UM is a Ultra Low Voltage dual-core processor for small and light laptops. It is clocked with 1.3 - 1.8 GHz (if Turbo Boost is enabled). Each core is based on the Nehalem (Westmere) micro-architecture. Hyperthreading enables the Dual Core CPU to handle 4 threads at once (for a better usage of the pipeline). AES, VT-d and Trusted Execution are deactivated for the 470UM, compared to the i7 UM CPUs.
The faster i5-560UM and i7-660UM are also clocked at 1.3 GHz but feature a higher TurboBoost frequency.
A feature of the Core i5-470UM is the integrated graphics card (called Intel HD Graphics) and memory controller. Both are on a separate die that is still manufactured in 45nm whereas the CPU die is already manufactured in the new 32nm process.
Due to the integrated memory controller, the HyperThreading and Turbo Boost, the Core i5-470UM is faster than a similar clocked Core 2 Duo (1.3 GHz) in all (us known) applications and benchmarks. Still the Turbo Boost may not trigger very often (sometimes it is even not activated in the BIOS) and therefore the maximum of 1.8 GHz may not be important.
The integrated Intel Graphics Media Accelerator HD (GMA HD) graphics card is clocked between 166-500 MHz (Turbo Boost) and therefore the base speed is clearly below the non low voltage versions. The performance should still be faster than the old GMA 4500MHD.
The power consumption of 18 Watt TDP (max.) counts for the whole package and therefore it is clearly better than the 17 Watt TDP of the Core 2 Duo SL-series (CPU alone).
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 P8400
► remove from comparison
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)
| Model | Intel Core i5-470UM | Intel Core 2 Duo T6400 | Intel Core 2 Duo P8400 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Series | Intel Core i5 | Intel Core 2 Duo | Intel Core 2 Duo | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Codename | Arrandale | Penryn | Penryn | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Series: Core 2 Duo Penryn |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Clock | 1333 - 1867 MHz | 2000 MHz | 2260 MHz | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| FSB | 2500 | 800 | 1066 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| L2 Cache | 512 KB | 2 MB | 3 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| L3 Cache | 3 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cores / Threads | 2 / 4 | 2 / 2 | 2 / 2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| TDP | 18 Watt | 35 Watt | 25 Watt | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Transistors | 382+177 Million | 410 Million | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| 32 nm | 45 nm | 45 nm, 1.05-1.15 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Die Size | 81+114 mm2 | 107 mm2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Socket | BGA1288 | PGA478 | Socket P | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Features | Intel HD Graphics 166-500MHz, DDR3-800 Memory Controller, Turbo Boost, Hyper-Threading, Virtualization Technology VT-x, Intel 64, Idle States, Enhanced Speedstep, Thermal Monitoring, Fast Memory Access, Flex Memory Access, Execute Disable Bit | MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), IDA (Intel Dynamic Acceleration) | SSE4.1, Virtualization Technology, Execute Disable Bit, Enhanced Speedstep, Ehnaced Halt State (C1E), 64 Bit, Trusted Execution Technology | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Architecture | x86 | x86 | x86 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Announced | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Manufacturer | ark.intel.com | ark.intel.com | ark.intel.com | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| max. Temp. | 105 °C | 105 °C | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| L1 Cache | 128 KB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| $209 U.S. |
- Average benchmark values for this graphics card