Review: AMD's DDR chipset and the new Athlon
The AMD 760 chipset in detail
The AMD 760 is AMD's first socket/slot A chipset with DDR-SDRAM support. The successor of the AMD 750 is again equally suitable for both Athlon and Duron processors.
The chipset consists of two components: the North Bridge AMD 761 comprises the AGP, PCI and memory controllers in addition to the CPU interface. The new South Bridge is called AMD 766. Key innovations include the two UltraDMA/100-compliant EIDE interfaces and four USB ports. In addition, two serial ports, one parallel port and the floppy controller are integrated here.
Equipped with DDR-SDRAM, the AMD 760 can handle clock speeds of both 200 and 266 MHz. PC100/133 SDRAM is no longer supported. The chipset is able to manage a maximum of 4 GB RAM. Four DIMM slots are available.
The FSB of the AMD 760 may also be clocked at 266 MHz in addition to the usual 200 MHz (DDR). Whether or not the chipset only supports the synchronous operation of memory and processor (at a clock speed of 200 MHz or 266 MHz for FSB and memory bus) or whether various combinations may be used, was not confirmed by AMD Germany when interviewed by tecChannel.de.
However, AMD did not integrate sound and modem features in the 760 chipset according to the AC/MC97 standard. These features have long since become standard with chip manufacturers such as Intel and VIA.
In addition to AMD, ALi and VIA have already announced DDR chipsets for Athlon/Duron processors. However, no test mainboards with these chipsets have been available so far.
Chipset | AMD AMD-760 | ALi ALiMAGiK 1 | VIA Apollo KT266 |
---|---|---|---|
| |||
North Bridge | AMD-761 | M1651 | to be announced |
Slot / Socket | Slot A / Socket A | Slot A / Socket A | Slot A / Socket A |
FSB-Clock (MHz) | 200/266 DDR | 200/266 DDR | 200/266 DDR |
Memory Clock (MHz) | 200/266 DDR | 66/100/133 SDR and 200/266 DDR | 66/100/133 SDR and 200/266 DDR |
Max. Memory (MByte) | 4096 | 3072 | 4096 |
Memory Type | DDR-SDRAM | SDRAM, DDR-SDRAM | SDRAM, VC-SDRAM, DDR-SDRAM |
AGP | 4x | 4x | 4x |
South Bridge | AMD-766 | ALi M1535D+ | VIA VT8233 |
---|---|---|---|
| |||
UDMA100 | Yes | Yes | Yes |
USB-Ports | 4 | 6 | 6 |
AC97 Audio/Modem | No | Yes | Yes |
Legacy I/O | Yes | Yes | Yes |
Keyboard Controller | Yes | Yes | Yes |