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Memory / Cache
7.1 How to identify what type of memory is supported on motherboard 
PC Partner motherboards use the industry standard DIMM Slots (SDR / DDR) for system memory. Different models have their combinations of DIMM Slots to suit the current market needs. 168 pins DIMM Slots are for 3.3V SDR SDRAM modules, while 184 pins DIMM Slots are for 2.5V DDR SDRAM modules.  

The number of RAM Slots define the way that system memory is implemented, and the approach for expansion. Please refer to the user manual, and the motherboard's existing configuration for details. 

7.2 How to upgrade memory on PC Partner motherboard 
System memory is upgradable via adding or changing RAM modules on the motherboard. This involves component installation, so it requires some hardware knowledge of an experienced user.  

Please identify what type of memory slots are available on your PC Partner motherboard. Check for the unpopulated memory slots on the board. For better functionality and performance, similar nature modules (eg. same speed and type) should be used when installing multiple RAM modules on a motherboard.  

Insert the modules into the RAM slots with care, making sure the gold-fingers are fully inserted into the slot. Also mind the polarization notch on the slots and the module. If the module seems not fitting, do not force it in, try putting in with a different orientation.

7.3 What is cache memory and how is it supported on motherboard 
Cache memory is an important element in high speed computer systems. Cache memory serves as a high speed buffer between the fast CPU and the slower main memory (DRAM). Older design of PC Partner motherboard implement cache memory via asynchronous fast SRAM, and are upgradable. Newer design cache are implemented by synchronous pipeline burst SRAM. Some of these pipeline burst SRAM are made into module boards, while other are directly soldered onto the motherboard (fixed at factory), or implemented inside the CPU. Cache size range from 256KB to 512KB or 1MB, for L2 or external cache.  

Cache memory is also found inside CPUs, with size range from 8KB to 64KB, also known as internal cache.