backtop


Print 48 comment(s) - last by afkrotch.. on Nov 18 at 8:31 AM


AMD Socket AM3 reference design overview.   (Source: ChileHardware, AMD)
As AMD looks forward at DDR3 implementations, motherboard manufacturers begin rolling out designs

Reference plans for motherboards based on AMD's desktop AM3 processors are already starting to mature. Socket AM3 is the successor to AMD's Socket AM2+, and is not expected to make an official release until 2008.

Current AMD guidance suggests its AM3 processors will be compatible with existing chipsets. AM2 processors, however, will not be compatible with AM3 motherboards. This same guidance claims AM3 processors will work with AM2+ motherboards.

The initial reference boards that support AM3 processors will be based on an AMD RS780 northbridge and an AMD SB700 southbridge. The northbridge and southbridge communicate with each other via a 4X PCIe lane. The northbridge communicates directly with the CPU using a HyperTransport link.

The RS780-based AM3 reference boards will feature 12 USB 2.0 ports along with 6 SATA II ports. For audiophiles the board also features integrated AZALIA HD Audio.

Also making its appearance for the first with AM3 will be DDR3 memory support. Since AMD places its memory controllers directly on its processors, the DDR3 DIMM slots will communicate directly with the processor using a 128-bit bus. According to current AMD reference posted at ChileHardware, there will be a total of four DIMM slots. 

AMD has not publically announced DDR3 support for its Phenom or Barcelona family processors.  Previous roadmaps indicate that DDR3 support will likely come with its 45nm shrink next year, but the company has also confirmed DDR3 will be present on the Bulldozer CPU architecture.

The RS780 AM3 chipset will also come with integrated graphics. The AM3 reference boards will feature a VGA and HDMI connection, along with a TV-out composite cable that features S-Video along with HD TV-Out.  This is only a reference design, so there is no guarantee these features will pan out in production products.


Comments     Threshold


This article is over a month old, voting and posting comments is disabled

By fleshconsumed on 11/12/2007 4:10:59 PM , Rating: 2
To be fair old 775 motherboards are not compatible with new 775 C2D CPUs, so technically that's equivalent to a socket change because if you want to use new CPU you have to get new board. And I'm not even mentioning ever increasing FSB from 800-1066-1333, which is not a bad thing performance wise, but it still forces you to use new motherboard most of the time except where manufacturer chooses to issue BIOS update. All in all, unless you're buying faster CPU from the same generation you pretty much have to get new board anyway.

But yeah, AMD is changing sockets as fast as Intel now. 754, 939, AM2/AM2+ (these two should be intercompatible) and now AM3.


"Paying an extra $500 for a computer in this environment -- same piece of hardware -- paying $500 more to get a logo on it? I think that's a more challenging proposition for the average person than it used to be." -- Steve Ballmer

Related Articles
Pricing Phenom: AMD's 2.4 GHz Almost Here
November 6, 2007, 7:54 AM
More AMD RS780 Details Revealed
July 30, 2007, 3:58 PM
Bulldozing the Competition in 2009
July 26, 2007, 4:11 PM
AMD Unveils "Barcelona" Architecture
September 7, 2007, 3:03 PM













botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki