The MacBook Pro "Core 2 Duo" 2.53 15" (SD - Mid-2009) features a 45 nm "Penryn" 2.53 GHz Intel "Core 2 Duo" processor (P8700), with two independent processor "cores" on a single silicon chip, a 3 MB shared "on chip" level 2 cache, a 1066 MHz frontside bus, 4 GB of 1066 MHz DDR3 SDRAM (PC3-8500) installed in pairs (two 2 GB modules), a 250 GB Serial ATA (5400 RPM) hard drive, an 8X DL "SuperDrive", a NVIDIA GeForce 9400M "graphics processor with 256 MB of DDR3 SDRAM shared with main memory", integrated iSight, and an LED-backlit 15.4" widescreen TFT active-matrix "glossy" display (1440x900 native resolution).