Dell Alienware M14x (Early 2011) - Manual (Page 103)

CHAPTER 7: SPECIFICATIONS
101
Processor and System Chipset
Processor
Second Generation Intel Core i5
Second Generation Intel Core i7
L2 cache 256 KB
L3 cache up to 8 MB
Bus clock 100 MHz
System chipset Mobile Intel HM67 Express Chipset
SDRAM bus width one or two 64-bit channels of DDR3 memory up to
1600 MHz
Processor address bus width 32 bits
Processor data width 64 bits
BIOS SPI Flash Memory 32 Mbit
Graphics bus PCIe x16 bus Gen2