Asus M5A87 User Manual

1.7.2 Memory congurations
You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC and non-ECC DDR3 DIMMs
into the DIMM sockets.
M5A87 Motherboard Qualied Vendors Lists (QVL)
DDR3-2000(O.C.)MHz capability
Vendor Part No. Size
SS/
DS
Chip
Brand
Chip
NO.
CL Voltage
DIMM support
A* B* C*
Transcend TX2400KLU-4GK(XMP) 4GB ( 2x 2GB ) DS - - 9-11-9-28 1.65V • •
• 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 conguration. 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 optimum compatibility, we
recommend that you obtain memory modules from the same vendor.
• AMD
®
FX™ Series CPU on this motherboard supports up to DDR3 1866MHz as its
standard memory frequency.
• Due to CPU spec., AMD
®
100 and 200 series CPUs support up to DDR3 1066MHz. With
ASUS design, this motherboard can support up to DDR3 1333MHz.
• When overclocking, some AMD CPU models may not support DDR3 1600 MHz or
higher frequency DIMMs.
• 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:
- Install a maximum of 3GB system memory if you are using a 32-bit Windows
®
OS.
- Use a 64-bit Windows
®
OS if you want to install 4GB or more memory on the
motherboard.
• This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.
• 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 2.4 Ai Tweaker menu for manual memory frequency
adjustment.
• For system stability, use a more efcient memory cooling system to support a full
memory load (4 DIMMs) or overclocking condition.
Chapter 1: Product introduction1-12

Asus M5A87 Specifications

General

ECC	Yes
Number of memory slots	4
Supported memory types	DDR3-SDRAM
Maximum internal memory	16 GB
Supported memory clock speeds	1066, 1333, 1600, 2000 MHz
System bus rate	5.2 GT/s
Processor socket	Socket AM3
Processor manufacturer	AMD
Compatible processor series	AMD Phenom II X2, AMD Phenom II X3, AMD Phenom II X4, AMD Phenom II X6, AMD Phenom II X8
Number of SATA II connectors	6
Number of Parallel ATA connectors	0
Headphone outputs	3
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
Audio chip	Realtek ALC887
Component for	PC
Motherboard chipset	AMD 870 (RX881)
Audio output channels	7.1 channels
Motherboard form factor	ATX
RAID levels	0, 1, 5, 10, JBOD
Supported storage drive interfaces	SATA III
On-board graphics card	-
Parallel processing technology support	Not supported
PCI Express slots version	2.0
Controller interface type	AMD SB850
LAN controller	Realtek RTL8111E
Networking features	Gigabit Ethernet
Ethernet interface type	Fast Ethernet, Gigabit Ethernet
BIOS type	AMI
ACPI version	2.0a
BIOS memory size	16 Mbit

Weight and Dimensions

Depth	213 mm
Width	305 mm