Intel Core i7-2635QM vs Intel Core 2 Duo P7450 vs Intel Core 2 Duo P8700
Intel Core i7-2635QM
► remove from comparison![Intel 2635QM](typo3temp/_processed_/b/6/csm_SandyBridge_Mobile_Chip2_90322f8436.jpg)
The Intel Core i7-2635QM is a fast quad core processor for laptops. It is based on the Sandy Bridge architecture and offers Hyperthreading to handle 8 threads at once (for a better usage of the pipeline). Compared to the previous Clarksdale quad-cores, the i7-2635QM is now manufactured in 32nm and offers an integrated graphics card and AES functions. Compared to the faster Core i7, the 2635QM does not support Trusted Execution functions and VT-d (VT-x Virtualization only).
Compared to the Core i7-2630QM, the 2635QM offers a slightly higher Turbo Boost frequency for the GPU (1200MHz versus 1100MHz) and is offered in the BGA Package (2630QM rPGA).
Sandy Bridge is the evolutionary successor of the Arrandale architecture. The most noteable improvements are the new 256Bit AVX instructions, the improved Turbo 2.0 and the integration of the graphics card into the 32nm CPU core.
Der i7-2635QM offers an integrated graphics card ( Intel HD Graphics 3000) which is clearly faster then the older Intel HD Graphics in the Arrandale CPUs. As the new GPU is included in the CPU, it is also manufactured in 32nm and shares the fast level 3 cache with the CPU cores (using a new ring bus). In the 2635QM it is clocked from 650-1200MHz (Turbo Boost).
Furthermore, an improved dual-channel DDR3 memory controller is included on the CPU die that is used by the CPU and GPU part.
The performance of the Core i7-2635QM should be about 10-15% faster than a similar clocked Clarksfield Core i7 (see first tests by Anandtech). Therefore, the 2635QM should be on a level (or even faster) than a Core i7-920XM Quad-Core.
Intel Core 2 Duo P7450
► remove from comparisonThe Intel Core 2 Duo P7450 is a dual core processor for laptops. It features 2.1 GHz and a shared level 2 cache of 3 MB. It is based on the 45nm Penryn core, but Trusted Execution and Virtualization (VT-x) are disabled.
The P7450 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).
Intel Core 2 Duo P8700
► remove from comparison![Intel P8700](typo3temp/_processed_/f/9/csm_core2duo_logo_13_337658bfa8.png)
The Intel Core 2 Duo P8700 is a mid-range dual core processor for laptops. It features 2.53 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). Technically, the P8700 is a slower clocked P8800 CPU.
Due to the relatively high clock speed, modern games (in 2009) should not be limited by the CPU speed (in conjunction with a middle class graphics card). High end gamers should choose a higher clocked Dual Core instead (when using a high end GPU).
The P8700 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 1200 MHz to save power (in idle mode).
Model | Intel Core i7-2635QM | Intel Core 2 Duo P7450 | Intel Core 2 Duo P8700 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Series | Intel Core i7 | Intel Core 2 Duo | Intel Core 2 Duo | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Codename | Sandy Bridge | Penryn | Penryn | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Series: Core 2 Duo Penryn |
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Clock | 2000 - 2900 MHz | 2130 MHz | 2530 MHz | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
L1 Cache | 256 KB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
L2 Cache | 1 MB | 3 MB | 3 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
L3 Cache | 6 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Cores / Threads | 4 / 8 | 2 / 2 | 2 / 2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
TDP | 45 Watt | 25 Watt | 25 Watt | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Transistors | 995 Million | 410 Million | 410 Million | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
32 nm | 45 nm, 1.05-1.15V | 45 nm, 1.00V - 1.25V | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Die Size | 216 mm2 | 107 mm2 | 107 mm2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
max. Temp. | 100 °C | 90 °C | 105 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Socket | FCBGA1224 | PGA478 | BGA479, PGA478 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Features | HD Graphics 3000 (650-1200MHz), DDR-1333 Memory Controller, HyperThreading, AVX, Quick Sync, Virtualization | Intel 64, Enhanced Speedstep, Execute Disable Bit | SSE4.1, Virtualization Technology, Execute Disable Bit, Enhanced Speedstep, Ehnaced Halt State (C1E), 64 Bit, Trusted Execution Technology | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
iGPU | Intel HD Graphics 3000 (650 - 1200 MHz) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Architecture | x86 | x86 | x86 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Announced | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Manufacturer | ark.intel.com | ark.intel.com | ark.intel.com | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
FSB | 1066 | 1066 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
$209 U.S. |