• Fake cache

The motherboard may include a non-functional or counterfeit SRAM cache, which can adversely affect performance. Signs of fake cache often include soldered QFP or DIP-chips labeled "WRITE-BACK" with traces that do not connect to the chipset.

• DIP chips can typically be removed and replaced with functional SRAM chips in sockets to restore cache functionality.
• QFP fake cache chips are often not replaceable with functional cache as the PCB footprints are not chipset connected.

Even though DCA fake chips were mounted, this board was showing "WRITE BACK CACHE ON" in the post screen.