This is quite an interesting mod shared by our friends at HKEPC where they are able to unlock the SLI capability on the nForce4-4x chipset. As we know, nForce4-4x chipset, the value version of nForce4 Ultra/SLI is often used by board makers for their inexpensive AMD motherboards that usually sports single PCI-E x16 slot.
Using a conductive pen, grease, and even pencil, short a resistor on the right side of the chipset as shown above will unlock the SLI capability by splitting into two x8. As such, pairing the nForce4-4x board with a dual GPUs card solution like the Gigabyte 3D1 or ASUS EN6800-DUAL, it can run SLI.
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