The P5AD2-E Premium board layout and design is similar to the
precedent P5AD2 where it is fitted with some low profile low ESR
capacitors surrounding the socket and the Mosfets are positioned together to be
fitted with a copper heatsink for better heat dissipation. There is a blue PCB
under the socket to conduct heat away from the motherboard components and ASUS
claims that the temperature can be lowered by some 10 degrees.
ASUS strongly believes that no moving parts should be on their
motherboard so there is no noise and EMI interference. As such you can only find
heatsinks on their Northbridge and Southbridge. The Northbridge heatsink gets
real hot when you increase the chipset voltage therefore it is advisable for you
to install a passive cooler to cool it now. Southbridge too is getting hotter
these days with numerous features and functions therefore a heatsink is required
P5AD2-E uses ICS 954123BF clock generator which is the same that
is being used for the current 915/925X series and it works well with the FSB
tweaking utilities such as SetFSB and Clockgen.
The Marvell Libertas 88W8000G and 88W8310 chipset is a two-chip
802.11g wireless solution. The 88W8000G device is a RF transceiver and 88W8310
provides all the baseband and MAC functions of a WLAN client. In addition, it
also includes advanced features such as a full implementation of the IEEE power
management functions and a high data rate of 72 Mbps.
ASUS uses another two Marvell Yukon 88E8053 PCI Express Gigabit
Ethernet controllers for Dual Gigabit LAN solution. It combines the Marvell
Alaska PHY transceiver and a GbE Media Access Controller (MAC) with a x1 PCI
Express interface and a 48 KB deep on-chip packet buffer. There is one RJ45 port
at the back panel Multi-IO port but the other RJ45 port can be found using the
Silicon Image SiI3114 is a single-chip PCI to 4-port Serial ATA
(SATA) host controller. Software RAID 0 (striping), RAID 1 (mirroring) and RAID
1+0 (mirrored stripe) functions are supported through Silicon Image’s SATARaid
RAID management software utility.
Texas Instruments TSB81BA3 is a new Firewire 1394b chip that
supports IEEE P1394b Revision 1.33+ at 1-Gigabit signaling rates and is also
backward compatible with IEEE 1394a-2000 and 1394-1995 standard. It can provide
up to three P1394b cable ports at up to 800 Mbits/s or up to three 1394a-2000
ports at 100/200/400 Mbits/s. There is one IEEE 1394a port onboard and another
two IEEE 1394 ports on an add-on module.
CMedia CMI9880 is a 8CH Azalia audio codec that offers 8 channel
DACs with SNR > 95dB and 4 channel with SNR > 85dB. It also offers jack sensing
and multi-streaming capabilities.
The rear panel multi IO consists of the PS/2 Keyboard and PS/2
Mouse Connectors, 1 Parallel Port (EPP/ECP), 1 S/PDIF-out Coaxial Jack, 1 S/PDIF-out
Optical, 1 IEEE 1394a port, 1 RJ45 LAN connector, 7.1 Audio connectors
(Center/Subwoofer/Front/Rear/Side Surround), 4 USB Ports, 1 Wireless LAN antenna
port and 1 Wireless LAN LED.