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First Chipsets for Socket 939 Athlon64

First Chipsets for Socket 939 Athlon64 - PCSTATS
Abstract: To support the new Socket 939 processors, we have competing chipsets from VIA and nVidia, the K8T800 Pro and Nforce 3 Ultra respectively.
Filed under: Chipset Published:  Author: 
External Mfg. Website: AMD Aug 09 2004   Mike Dowler  
Home > Reviews > Chipset > AMD

VIA's K8T800 Pro

VIA's K8T800 is a more traditional chipset design than Nvidia's offering, using separate Northbridge and Southbridge chips to carry out its functions. The upgraded 'Pro' version that VIA released for the launch of the Socket 939 Athlon64 CPUs is virtually identical to the original K8T800 chipset, and more or less replaces it.

The major change is an increase in speed and maximum bandwidth for the connection between the Northbridge chip and the CPU from 800MHz to 1000MHz, in order to keep up with the speed of the new AMD offerings. A secondary change is the doubling in speed of the proprietary 'V-link' connection between the north and south bridge chips, reducing the possibility of a data bottleneck forming between the two.

The only other difference between the K8T800 Pro and its predecessor is its use of an asynchronous bus architecture, and the addition of a BIOS option for locking the AGP and PCI buses together, keeping them in synch with each other when overclocking, while they clock separately than the rest of the system. This has made the chipset more popular with the enthusiast market through improved overclocking potential.

As for features, the K8T800 Pro uses AGP 8X for graphics, with PCI-Express again waiting for a later chipset design for its debut on AMD platforms. Up to 4GB of DDR memory is supported.

The VT8237 Southbridge Chip provides for up to a pair of serial-ATA drives, as well as four standard ATA-133 devices. RAID is available for the serial-ATA drives in RAID 0, 1 and 0+1 levels. A separate Serial ATA controller has to be added by motherboard manufacturers in order to allow RAID 0+1 to actually function, since 4 drives are needed.

Eight USB 2.0 connections are catered by four controllers. Onboard firewire is not supported, but can easily be added by manufacturers.

VIA's 'Vinyl' integrated audio technology (compatible with AC'97) provides integrated audio support. Manufacturers have a choice between the standard 6 channel 'six-TRAC' audio chip and the 'eight-TRAC' 7.1 channel chip. Theoretically, the more high-end Envy audio chips could also be used, but in practice this is rare.

The Southbridge chip is linked to the Northbridge chip by means of the new 'Ultra V-Link' proprietary connection method, which succeeds VIA's earlier 'V-link' connection seen on the original K8T800 chipset. The newer technology offers double the bandwidth, 1066MB/s as compared to 533MB/s for the older standard.

10/100 Ethernet is also integrated into the VT8237 chip. Gigabit-capable parts may be added by manufacturers, but will need to be routed through the PCI bus. Legacy support for floppy, parallel and serial ports (if implemented by the manufacturer) rounds out the chipset's features.

From the specifications, you can see that the Nforce 3 Ultra is the more feature oriented of the two competing chipsets, but features aren't everything. Benchmarks should prove which is the better performer, but we doubt that there is likely to be much difference between these two excellent chipsets. The next generation of chipsets from these two companies should continue this fierce competition, as well as introducing vital features like PCI-Express, and SLI support.

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< Previous Page © 2017 PCSTATS.com Chipset News»

 

Contents of Article: AMD
 Pg 1.  First Chipsets for Socket 939 Athlon64
 Pg 2.  — VIA's K8T800 Pro

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