Dell E93839 (GA0402) motherboard is the primary system board for the Dell OptiPlex 780
series. It is a legacy Intel-based board designed for business-class desktop performance, supporting the LGA 775 socket and DDR3 memory. Core Technical Specifications Dell OptiPlex 780 Service Manual--Mini Tower Computer
Dell E93839 GA0402 is a legacy motherboard predominantly used in the Dell Optiplex 780
series. It is a Micro-ATX board built around the Intel Q45 Express chipset, designed for reliable office performance during the late 2000s and early 2010s. Core Technical Specifications Socket Type: (Socket T). Q45 Express with ICH10DO. Form Factor: (approximately 9.6 x 9.6 inches). Memory (RAM): DDR3 SDRAM (Non-ECC). 4 DIMM slots. Supports up to dell e93839 ga0402 motherboard specs upd
total (4GB per slot), though some documentation lists 8GB as the tested maximum. Typically operates at
due to chipset limitations, even if higher-speed modules are installed. Processor Support: Intel Core 2 Quad (up to 1333 MHz FSB). Intel Core 2 Duo (up to 1333 MHz FSB). Intel Pentium Dual-Core and Celeron processors. Connectivity and Expansion Dell OptiPlex 780 Service Manual--Mini Tower Computer
Since this board is proprietary (often found in Dell OptiPlex 7010/9010/3010 SFF or DT models), this post focuses on the critical specs, limitations, and upgrade paths. Dell E93839 (GA0402) motherboard is the primary system
Title: Dell E93839 (GA0402) Motherboard Specs & Upgrade Update: What You Need to Know
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Just got my hands on the Dell E93839 motherboard (also labeled GA0402). If you’re trying to ID this board or plan an upgrade, here is the latest spec breakdown and compatibility update. Title: Dell E93839 (GA0402) Motherboard Specs & Upgrade
| CPU Model | Cores / Threads | Clock Speed | FSB | L2 Cache | Notes | |-----------|----------------|-------------|-----|----------|-------| | Intel Core 2 Quad Q9650 | 4 / 4 | 3.00 GHz | 1333 MHz | 12 MB | Maximum stable upgrade | | Intel Xeon E5450 (with LGA 771 mod) | 4 / 4 | 3.00 GHz | 1333 MHz | 12 MB | Needs microcode mod & sticker adapter | | Intel Core 2 Duo E8600 | 2 / 2 | 3.33 GHz | 1333 MHz | 6 MB | Best for single-threaded tasks | | Intel Core 2 Quad Q6600 | 4 / 4 | 2.40 GHz | 1066 MHz | 8 MB | Common cheap option; runs hot |
Update (2023–2025): Enthusiasts have successfully run Xeon E5450 and E5472 on this board after flashing a modified BIOS that adds Xeon microcodes. Without the mod, the board will beep and fail to POST. The safest route is still the Q9650.