Dell E93839 Ga0402 Motherboard Specs - Upd

is a motherboard designed for the Dell OptiPlex 780 series. It is built on the chipset and features a Socket LGA 775 (also known as Socket T) .

With an , the board is compatible with a range of legacy Intel processors:

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

Do not use a standard ATX power supply with this board unless it is from Dell (e.g., Dell L305P-01). Off-brand PSUs often lack the proper -5V rail or have different power-good timing, causing random shutdowns. dell e93839 ga0402 motherboard specs upd

Basic entry-level processors supporting an 800 MHz FSB. Memory (RAM) Specifications

| | Specification | Additional Notes | | :--- | :--- | :--- | | Motherboard Model | GA0402 / Dell 0C27VV / 0G214D | The primary model number is GA0402 . DP/N C27VV is a specific variant commonly found in the Optiplex 780 Mini Tower. | | Chipset | Intel Q43 Express with ICH10D Southbridge | This chipset provides support for Intel's Core 2 Duo and Core 2 Quad processors. The ICH10D Southbridge handles I/O functions like SATA and USB. | | CPU Support | LGA775 Socket Supports 65W & 95W CPUs (later BIOS may add support for 95W CPUs like the Core 2 Quad Q9650) | Compatible CPUs: | Intel Core 2 Quad (e.g., Q9550, Q9650) – Best for multi-tasking and modern workloads. | Intel Core 2 Duo (e.g., E8400, E8600) – Good for basic tasks and gaming. | Intel Pentium Dual-Core / Celeron | | BIOS must support later CPUs. A16 is a common final BIOS version for related Optiplex 760 systems and should support most LGA775 CPUs. | | Power Delivery: The motherboard's VRM (Voltage Regulator Module) design limits CPU upgrades. Some variants only support 65W CPUs (e.g., E8600), while others can handle 95W CPUs (e.g., Q9650). Check Dell's support documentation for your specific Service Tag (e.g., 8CKX62S). | | RAM | 4 x DIMM slots DDR2 (for most variants) or DDR3 | Variants: | | | DDR2 variants: Max 8GB (2GB per slot), speeds 667/800MHz (non-ECC, 1.8V). | | | DDR3 variants: Max 12GB - 16GB (e.g., 4GB + 4GB + 4GB), speeds 1066/1333MHz. You must use DDR3L (low voltage) or standard DDR3 depending on motherboard specs. | | Storage | 4 x SATA 2.0 (3Gb/s) ports | Supports SATA hard drives and SSDs (solid-state drives). An SSD is the single best upgrade for any older system and will provide a massive performance boost in boot times and application loading. | | Expansion Slots | 1 x PCIe x16 (Gen 2) | - PCIE_X16: Use for dedicated graphics cards (GPU). | | | 1 x PCIe x16 (Gen 2, wired as x4) | - PCIE_X4: Often physically an x16 slot but wired for x4 speeds. Best for non-GPU cards (e.g., NVMe adapters). | | | 1 x PCIe x1 | - PCIE_X1: For network cards, sound cards, or USB expansion cards. | | | 3 x PCI | - PCI: For legacy expansion cards (e.g., older sound cards, TV tuners). | | Back I/O Ports | - 1 x PS/2 Keyboard/Mouse combo | These ports are standard for the era: | | | - 1 x VGA (Integrated) | | | | - 1 x DVI-D (Integrated) | - VGA: For analog monitors. | | | - 4 x USB 2.0 ports | - DVI-D: For digital monitors. | | | - 1 x Gigabit Ethernet (RJ45) | - Ethernet: Realtek or Intel 82567LM (check your board). | | | - 3 x Audio jacks (Line-in, Line-out, Mic) | - Audio: 6-channel HD Audio. | | Internal Connectors | - Front panel header (Power/Reset/LEDs) | - Front Panel Header: Pinout is proprietary. You cannot use a standard ATX case's front panel connector without adapters. | | | - Front USB 2.0 headers (usually 2) | | | | - Front audio header | - USB/Audio Headers: Standard for case front-panel USB and audio ports. | | | - 4-pin CPU fan header | | | | - 3-pin Chassis fan header(s) | - Fan Headers: Often Dell-proprietary pinouts. Standard fans may run at 100% speed. Use fans designed for Dell systems or rewire connectors. | | | - 24-pin Main Power | - Main Power: Standard ATX pinout, but the PSU itself may have proprietary wiring. | | | - 4-pin CPU Power | |

: Validated maximum of 8 GB total (utilizing 4 x 2GB memory modules). Dell OptiPlex 780 Service Manual--Mini Tower Computer is a motherboard designed for the Dell OptiPlex 780 series

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.

Here is the updated specification breakdown and a helpful review regarding its performance and usability.

The Dell E93839 GA0402 is an excellent choice for a low-cost, budget-friendly office PC, home server, or basic emulation machine. While it cannot run modern high-end applications, a Q9650 processor with 16GB RAM and an SSD makes it a capable machine for daily tasks and web browsing in 2026. It is a legacy Intel-based board designed for

In this comprehensive guide, we break down every technical spec of the Dell E93839 GA0402 motherboard and provide actionable updates for maximizing its potential.

Equipped with the , this motherboard supports a broad range of Intel's 45nm and 65nm multi-core processors. It accommodates a Front Side Bus (FSB) speed of up to 1333 MHz . Supported CPU families include: