AMD Southbridge SB chips to include built-in Serial ATA 3 support. AMD’s SBseries fan speed controller exposed. Options aplenty make this motherboard reviewer swoon by Geoff Gasior — AM on. I’ve been a big fan, pun intended, of fan control options in the BIOS. Some motherboards have real basic functionality while some of have been excellent.

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Putting this functionality in the chipset certainly makes sense, but has AMD implemented the sort of functionality enthusiasts might want? The linear algorithm smooths things out, allowing fan speeds to ramp, well, linearly between predefined minimum and maximum values. Email the author s: This page was last edited on 25 Septemberat Motherboard chipsets List of AMD chipsets.

By using this site, you agree to the Terms of Use and Privacy Qmd. AMD does not provide any SB8x0 errata publicly. The microcontroller can manage fan speeds using three algorithms: Single-sensor mode relies on only one temperature sensor, while the dual-sensor scheme takes in two inputs and will set the fan speed based on the higher of the two.

AMD’s SB800 to have SATA 3 support

Linear mode is most akin to what’s available in contemporary BIOSes, although users aren’t always able to set minimum and maximum temperature thresholds and fan speeds.

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Non-linear mode is just sb80 flexible, allowing users to configure as many slopes as they can steps. In those cases, the thermal diode built into AMD’s north-bridge silicon can be used as a secondary temperature input.

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AMD’s SBseries fan speed controller exposed – The Tech Report – Page 1

PC enthusiasts have always had a sb8000 of an obsession with maximizing performance, so it’s no surprise motherboard makers have lavished us with a wealth of overclocking and performance tweaking options. Most OSes require patches in order to work reliably. The SB family of south-bridge silicon has an integrated zb800 that, with a little help from firmware built into a system’s BIOS, can offer more control over that system’s fans than has ever graced a motherboard.

The fan speed controls available in most modern BIOSes are basic at best and often laughably inadequate when compared to the frankly excessive overclocking options being offered. In addition to the three algorithms that determine how fan speeds respond to temperature changes, the SB series is governed by single- and dual-sensor policies that dictate how temperatures are interpreted.

That’s a travesty, because this is exactly the sort of fan speed control that I’m sure many an enthusiast would love to have in his motherboard’s BIOS.


This method drapes a string of linear slopes across multiple step points. These two processors support a new socket called Socket G34 with four-channel DDR3 support, with other platform features such as HyperTransport 3. While in the same internal event mentioned above, AMD gave a preview on the features of the SB8xx family of southbridges, as follows: There’s plenty of granularity, too.

A view of the SB series’ fan control inputs and outputs. All sv800 functionality is offered for free in every SBseries south bridge, with no additional hardware required. AMD chipset series.

This argument might sound familiar because I’ve been grinding this axe for a while now. Retrieved from ” https: CuttinHobo I heard he prefers to be called a Seth Lord On the overclocking front, we’ve long passed the point of diminishing returns.

In step mode, fan speeds jump from one value to the next as temperatures rise.

They’ve come a long way in that time, adding integrated flashing utilities, support for multiple configuration profiles, and, of course, the ability to tweak a staggering array of memory timings, clock speeds, and voltages.