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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AMD’s SB Is a Completely New Southbridge
Few seem to have picked up on the fact that we also want our rigs to be as quiet as possible, though. 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.
The SB family of south-bridge silicon has an integrated microcontroller 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. AMD chipset series.
There’s plenty of granularity, too. AMD does not provide any SB8x0 errata publicly. Email the author s: AMD sockets and chipsets.
AMD SB Southbridge supports Fusion
This method drapes a string of linear slopes across multiple step points. Of the big three, only Asus has made real progress in improving BIOS-level fan speed controls, and it still has a long way to go to match what now-defunct mobo maker Abit was doing more than seven years ajd.
Single-sensor ams 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. In fact, I’d wager that most of us would happily trade the ability to tweak obscure memory timings and system voltages for such robust fan control functionality.
From Wikipedia, the free encyclopedia. The microcontroller can manage fan speeds using three algorithms: Retrieved from ” https: This page was last edited on 25 Septemberat The Tech Report System Guide: PC enthusiasts have always had a bit 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.
Motherboard makers need only to connect fan and diode traces to the south bridge and implement the necessary BIOS hooks to give users access to fan control variables.
The codenamed “Maranello” platform consists of six-core “Sao Paulo” or twelve-core “Magny-Cours” processors. While in the same internal event mentioned above, AMD gave a preview on the features of the SB8xx family of southbridges, as follows: Current information about the chipset series is very scarce, while the officially published information about the series is the server chipsets with two variants available, the AMD S chipset and the AMD S chipset, all of them paired with the SBS series southbridge.
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. Motherboard chipsets List of AMD chipsets. Putting this functionality in the chipset certainly makes sense, but has AMD implemented the sort of functionality enthusiasts might want?
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Props to Merrikh and AMD for incorporating such powerful fan control support in the south bridge, and shame on any motherboard maker that leaves this particular feature untapped in favor of alternative fan control mechanisms that offer less, well, control. Combine the two, and you have a non-linear approach that’s really more multi-linear. The chipset series is targeted in three markets: Steam names the best-selling games of MSI’s fan speed controls remain limited but continue to offer at least some tuning options, while Gigabyte’s are still shockingly nonexistent.
Any halfway-decent motherboard BIOS has more than enough clock and voltage ranges for enthusiasts, and most go above and beyond what even truly extreme liquid-nitrogen-fueled overclockers might require.
The linear algorithm smooths things out, allowing fan speeds to ramp, well, linearly between eb800 minimum and maximum values.
Big news, no news, and future news. 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. So, imagine my delight when, at AMD’s Technical Forum in Taipei last week, I came across a presentation on the fan speed controls enabled by the company’s current generation of south-bridge chips.
I went off on a bit of a rant on the subject more than a year and a half ago, and little has changed since.