6, or 8 GiB of shared dual channel DDR3 SDRAM @ 1066 MHz. Chipset: Nvidia 730i Graphics: integrated Nvidia GeForce 9400M G with 256 MB of graphics memory, or integrated 9400M + discrete GeForce 9200M (referred to officially as a "9500M"). Display: 13.3" Edge-to-Edge with CCFL-backlit, 1280×800 resolution or 13.3" Edge-to-Edge with LED-backlit, 1280×800 resolution and TrueLife. Storage: 1 x SATA (250 GB, 320 GB or 500 GB HDD at 7200 RPM or 256 GB Solid State Drive) Optical Drive: 8X slot-load dual-layer DVD+/-RW drive or 2X tray-load Blu-ray Disc Combo drive. Battery: 6-cell (56 Wh) or 6-cell (56 Wh) w/additional 9-cell (85 Wh) Lithium-ion battery. Camera: 1.3 MP or 2 MP webcam. Wi-Fi Card: Dell Wireless 1510 802.11a/b/g/draft/n half-mini card. Bluetooth: Dell Wireless Bluetooth Internal 370 (2.1 EDR). I/O ports: 1 USB 2.0 port, 1 USB/eSATA Combo port, 1 Gigabit Ethernet port, 1 VGA output, 1 HDMI output, 1 DisplayPort output, 2 headphone jack, 1 microphone jack, 1 54 mm Express Card slot, 1 8-in-1 memory card reader, 1 IR receiver and 1 power adapter connecter. XPS M1340 is no longer available for purchase on Dell's USA website as of March 2010. No replacement 13-inch Studio XPS has been announced. Studio XPS 16 Studio XPS 16 (M1640) Released early January 2009, it features a 15.6-inch 720p or a 16.0-inch 1080p 16:9 aspect ratio screen. It is equipped with either a 512 MiB ATI Radeon HD 3670 or 1024 MiB ATI Radeon HD 4670 graphics card, an Intel Core 2 Duo processor, a DVD+/- RW or a Blu-ray ROM combo drive, and Windows Vista or Windows 7. It has an illuminated QWERTY keyboard and leather accents on the lid are optional. Its full body is onyx black and silver. Studio XPS 16 (M1645) Same as above, featuring a quad core Intel Core i7 Clarksfield processor on an intel PM55 chipset mainboard and a 1 GB ATI Mobility Radeon HD 4670 or 5730. Some of these XPS systems were found to have throttling issues when demanding applications like games were run on them. Dell was able to provide a fix for the issue with the help of community input. The fix involved bios updates and a more powerful AC adapter. Other laptops were also found to suffer from the same throttling issue. Studio XPS 16 (M1647) Same as above, featuring a dual core Intel Core i5 or Intel Core i7 Clarksfield