HP 504779-001 - System board (motherboard) - Full-feature plus, 256MB graphics memory, with RX781/SB700 ATI chipset Retail
HP 497023-001 - System board (motherboard) - Full-featured+, 512MB (VRAM) graphics memory, and Intel PM45 chipset Retail
HP 530737-001 - System board (motherboard) - Discrete architecture, 512MB graphics memory PM45 chipset Retail
HP 491799-001 - System board (motherboard) - Full-featured plus, ATI-M82 discrete with integrated HD3450 graphics memory Retail
HP 686970-501 - System board (motherboard) - Features the QM77 chipset and a graphics subsystem with discrete memory - Includes replacement thermal Retail