Feeds

Nvidia on-the-fly GPU switching desktop debut due Q1 '08

Hybrid SLI coming in MCP78S chipset

Build a business case: developing custom apps

Nvidia will bring the ability to flip at will between integrated and discrete graphics cores to the desktop early next year, courtesy of upcoming AMD-oriented chipset the MCP78S.

The chipset incorporates a GeForce 8-class DirectX 10, Shader Model 4.0 graphics engine, but it's also capable of driving a PCI Express 2.0 graphics card connected via the chipset's 16 PCIe 2.0 lanes, a presentation slide posted by Hexus.net reveals.

That's broadly what most integrated chipsets do, but the MCP78S also supports Hybrid SLI, which allows the user to flip between the two GPUs according to need. Need 3D performance for gaming? Activate the graphics card. The rest of the time: host the system's graphics on the lower-power integrated GPU.

Switching between the two can take place on the fly, unlike past attempts to do this, all of which required a restart. That was enough to put most users off utilitising the option.

Hybrid SLI first emerged back in July 2006 under the name 'SLI Power'. Since then, AMD began talking up PowerXPress, its name for the notebook-oriented version of the technique that's set to debut in AMD's 'M780' mobile chipset in Q1 2008.

Nvidia renamed SLI Power as Hybrid SLI back in June this year but then was pitching the technology as a notebook feature. Laptops are, after all, more sensitive to power draw than desktops. However, it's clear from the latest reports that Nvidia reckons it'll be useful for desktops too.

Current concerns about performance-per-Watt have already driven AMD to incorporate power-saving technology in its new ATI Radeon HD 3800 series of GPUs, all of which clock down according to the kind of apps the user is running, the better to minimise desktop power draw.

In addition to Hybrid SLI, the MCP78S will support Socket AM2 and AM2+ CPUs over a 2600MT/s HyperTransport 3.0 bus. It will also handle six 3Gb/s SATA drives, 12 USB ports and Gigabit Ethernet.

Separately, early 2008 will also see the arrival of Nvidia nForce 780-based motherboards, a month after the chip makers launches the chipset, it has been claimed.

The 780 will appear as the 780i SLI - aka 'C72XE' - and the 780a SLI - 'C72P' - targeting Intel and AMD platforms, respectively. Both chipsets will drive three PCI Express 2.0 x16 graphics card slots for 'tri-SLI' operation, mobo-maker moles claim.

Both are high-end chipsets aimed at gamers who might otherwise opt for Intel's X38 or the upcoming X48.

The essential guide to IT transformation

More from The Register

next story
So, Apple won't sell cheap kit? Prepare the iOS garden wall WRECKING BALL
It can throw the low cost race if it looks to the cloud
End of buttons? Apple looks to patent animating iPhone sidewalls
Filing suggests handset with display strips
One step closer to ROBOT BUTLERS: Dyson flashes vid of VACUUM SUCKER bot
Latest cleaner available for world+dog in September
Samsung Gear S: Quick, LAUNCH IT – before Apple straps on iWatch
Full specs for wrist-mounted device here ... but who'll buy it?
Apple promises to lift Curse of the Drained iPhone 5 Battery
Have you tried turning it off and...? Never mind, here's a replacement
Now that's FIRE WIRE: HP recalls 6 MILLION burn-risk laptop cables
Right in the middle of Burning Mains Man week
Apple's iWatch? They cannae do it ... they don't have the POWER
Analyst predicts fanbois will have to wait until next year
Reg man looks through a Glass, darkly: Google's toy ploy or killer tech specs?
Tip: Put the shades on and you'll look less of a spanner
HUGE iPAD? Maybe. HUGE ADVERTS? That's for SURE
Noo! Hand not big enough! Don't look at meee!
prev story

Whitepapers

Top 10 endpoint backup mistakes
Avoid the ten endpoint backup mistakes to ensure that your critical corporate data is protected and end user productivity is improved.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Backing up distributed data
Eliminating the redundant use of bandwidth and storage capacity and application consolidation in the modern data center.
The essential guide to IT transformation
ServiceNow discusses three IT transformations that can help CIOs automate IT services to transform IT and the enterprise
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.