While the Intel GM45 chipset theoretically supports 8GB, the Sony BIOS on the PCG-3J1M typically caps at 4GB. Installing 4GB (2x2GB) is the best performance upgrade you can make.
4GB DDR2 SDRAM (800 MHz), typically expandable to 8GB across two slots. sony vaio pcg-3j1m specs
The PCG-3J1M was built during the transition from Core 2 Duo to the first generation of Core i processors. Most units feature the Intel Core i3 or Core i5 dual-core chips. While the Intel GM45 chipset theoretically supports 8GB,
| Category | Details | |----------|---------| | | PCG-3J1M (often sold as VGN-FW21E or VGN-FW11 series) | | Release Year | 2008–2009 | | Type | Desktop replacement / Multimedia laptop | | OS (Original) | Windows Vista Home Premium (32-bit) | sony vaio pcg-3j1m specs