Speed to limit The Custom Gaming PC/computer with 45 Nanometers of Quad-Core Processor. The Custom Computer with the quad core Intel Core 2 Extreme QX9650 can overclocked from 3.0GHz to 4.0 GHz core clock speed. This Alienware Area-51 ALX, With The New ATI Radeon HD 3870 X2 in CrossFireX technology is the DirectX 10 screaming graphics firepower that ALX customers have been waiting for. Computer with power-packed dual GPU graphics cards provide the stunning realism and immersive visual quality that propels you deep into your gameplay. Quad 512MB of GDDR3 onboard memory, and PCI-Express 2.0 x16 GPU bus interface graphics compatibility, makes sure your next-gen DX10 games can get cranked up to their maximum settings without experiencing any lag in framerates. The new revolution in gaming graphics is Quad GPU technology.The Luxury Gaming Computer with the Intel X38 chipset is equipped with the new standard in high performance memory, Patriot Extreme Performance Enhanced Latency DDR3. DDR3 carries an average of 30% less power consumption and higher memory bandwidth than DDR2. These features allows for RAM clock speeds up to 1333MHz to 1600MHz.