HP 409979-001 - Video PC board - ATI Mobility Radeon X1600 graphics controller with 256 MB of discrete video memory - For nx9420 models Retail
HP 322498-001 - Motherboard with ATI Mobility M9 - 64MB video memory - Does not include processor or system memory Retail
HP F1443-60905 - Video PC board - 128-bit, 8MB video DRAM - Video PC Board - 128-bit, 8MB Video DRAM (For F1444WT ONLY) Retail