Asus F2A85-V PRO User Guide - Page 26

Chapter 2 Memory configurations You may install 1GB, 2GB, 4GB and 8GB unbuffered non‑ECC DDR3 DIMMs into the DIMM sockets. • You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation. • We recommend that you install the memory modules from the blue slots for better overclocking capability. • Always install DIMMs with the same CAS latency. For optimal compatibility, we recommend that you install memory modules of the same version or date code (D/C) from the same vendor. Check with the retailer to get the correct memory modules. • Due to the memory address limitation on 32-bit Windows OS, when you install 4GB or more memory on the motherboard, the actual usable memory for the OS can be about 3GB or less. For effective use of memory, we recommend that you do any of the following: - Use a maximum of 3GB system memory if you are using a 32-bit Windows OS. - Install a 64-bit Windows OS when you want to install 4GB or more on the motherboard. For more details, refer to the Microsoft® support site at http://support.microsoft.com/kb/929605/en-us. • This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less (Memory chip capacity counts in Megabit, 8 Megabit/Mb = 1 Megabyte/MB). • The default memory operation frequency is dependent on its Serial Presence Detect (SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value. To operate at the vendor-marked or at a higher frequency, refer to section 3.4 Ai Tweaker menu for manual memory frequency adjustment. • For system stability, use a more efficient memory cooling system to support a full memory load (4 DIMMs) or overclocking condition. F2A85-V PRO Motherboard Qualified Vendors Lists (QVL) DDR3 2400 (O.C.) MHz capability Vendors Part No. Size SS/ Chip DS Brand Chip NO. Timing DIMM socket support Voltage (Optional) 1 DIMM 2 DIMMs 4 DIMMs G.SKILL F3-19200CL9D-4GBPIS(XMP) 4GB(2x 2GB) DS - - 9-11-9-28 1.65V ● ● Kingmax FLLE88F-C8KKAA HAIS(XMP) 2GB SS - - 10-11-10-30 1.8V ● ● ● Team TXD34096M2400HC9N-L 4GB DS SEC 128 HCH9 K4B2G0846D 9-11-11-28 1.65V ● ● Team TXD34096M2400HC9N-L 4GB DS SEC 128 HCH9 K4B2G0846D 9-11-11-28 1.65V ● ● DDR3 2250 (O.C.) MHz capability Vendors Kingston Part No. Size SS/DS Chip Brand DIMM socket support Chip NO. Timing Voltage (Optional) 1 DIMM 2 DIMMs 4 DIMMs KHX2250C9D3T1K2/4GX(XMP) 4GB(2x 2GB) DS - - - 1.65V ● ● ● 2-6 Chapter 2: Hardware information