AMD yesterday announced
its M690 mobile chipset family, formerly known as RS690M, for
AMD Turion 64-based notebooks – M690V
and M690T. The new mobile chipsets take the previously announced AMD 690G desktop
chipset and pairs it with mobile-centric power saving features. AMD
integrates the new power saving features into the ATI Radeon X1200 integrated
New to the integrated ATI Radeon X1200 graphics core is a power-saving dynamic
video memory allocation scheme. With the new scheme, system memory is
automatically allocated to the graphics processor on the fly, at the GPU’s
request. Intel implements a similar scheme in its graphics core since the
fruition of the Intel
Extreme Graphics core.
AMD has also integrated a new side-port memory feature in M690T chipsets, which
allows notebook manufacturers to provide dedicated video memory to the ATI
Radeon X1200 graphics core. AMD supports up to 128MB of video memory connected
to the side-port bus.
The rest of the graphics core is identical to its desktop variant. AVIVO video
processing features are available for enhanced video playback. The ATI Radeon
X1200 graphics core features MPEG-2, MPEG-4 and WMV9 hardware accelerated video
playback. There is also an integrated TV encoder for component, composite and
An integrated dual-link 24-bit LVDS interface provides connectivity to displays
while a TMDS interface provides support for DVI and HDMI outputs. As with the
desktop AMD 690G, the M690 features an integrated high-definition audio
controller for HDMI audio functions. HDCP 1.1 content protection is also
The AMD M690T chipset features additional output capabilities via internal DVO
port. Manufacturers are able to add additional output capabilities using DVO
compatible chips. However, a manufacturer can only take advantage of the DVO
port or side-port memory, not both at the same time.
Other notable features of the chipset include one PCIe x16 interconnect for
external graphics, four PCIe x1 links for other devices, 10 USB 2.0 ports, SATA
3.0 Gbps, ATA133, TPM 1.1 and 1.2, high-definition audio and PCI v2.3 support.
quote: Other notable features of the chipset include one PCIe x16 interconnect for external graphics