Featured Articles

AMD sheds light on stacked DRAM APUs

AMD sheds light on stacked DRAM APUs

AMD is fast tracking stacked DRAM deployment and a new presentation leaked by the company  points to APUs with stacked DRAM,…

More...
Nvidia officially launches the 8-inch Shield Tablet

Nvidia officially launches the 8-inch Shield Tablet

As expected and reported earlier, Nvidia has now officially announced its newest Shield device, the new 8-inch Shield Tablet. While the…

More...
Intel launches new mobile Haswell and Bay Trail parts

Intel launches new mobile Haswell and Bay Trail parts

Intel has introduced seven new Haswell mobile parts and four Bay Trail SoC chips, but most of them are merely clock…

More...
Aerocool Dead Silence reviewed

Aerocool Dead Silence reviewed

Aerocool is well known for its gamer cases with aggressive styling. However, the Dead Silence chassis offers consumers a new choice,…

More...
AMD A8-7600 Kaveri APU reviewed

AMD A8-7600 Kaveri APU reviewed

Today we'll take a closer look at AMD's A8-7600 APU Kaveri APU, more specifically we'll examine the GPU performance you can…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Friday, 31 October 2008 05:46

Nvidia forced to disable chipset PCI prefetch

Written by test


Image

Update: More trouble for Nvidia


It has come to our attention that Nvidia has ended up in more product trouble, although this time it's with regard to Nvidia's chipset division and it's not related to a manufacturing issue, but rather a lawsuit from OPTi Inc.

As the story goes, Nvidia has infringed a patent regarding to PCI prefetch that OPTi holds and although OPTi no longer makes PC chips, they now license intellectual property. The problem in this case is that Nvidia didn't come out on agreeable terms with OPTi and has to remove the PCI prefetch feature from its chipsets.

The problem with this is twofold. Firstly, it means that just about every single Nvidia chipset from the nForce 500-series and onwards is affected and as such, PCI prefetch has to be removed from all retail boards and every single BIOS upgrade that contains the PCI prefetch code has to be removed from the Web. This also means that all Nvidia partners have to release BIOS updates for every single Nvidia motherboard from the nForce 500-series and onward.

For consumers, this means that they'll get very poor PCI performance, so if you're using any PCI cards in your Nvidia-based motherboard, don't upgrade to the latest BIOS, as it will reduce the performance of the PCI bus. This isn't going to be popular with a lot of users out that that have already upgraded their BIOS, as this "feature" has already been implemented by some motherboard manufacturers going back a couple of months.

Furthermore, Nvidia will be asking for written confirmations from all its partners that older BIOS versions have been removed from their Websites and that no BIOS versions with PCI prefetch will ever see the light of day outside of the companies again. All boards currently on sale must also have the BIOS changed, although this only seems to apply to the U.S. market as of right now.

Talk about a mess and one has to wonder why Nvidia couldn't just pay up to OPTi and get it all over with, without causing all this hassle to its partners and reducing the performance of the PCI bus on its motherboards which will ultimately cause them to lose customers.

 

Update: Nvidia got back to us with a following comment. " This is old news from Jan 2007. NVIDIA implemented and distributed an SBIOS fix to disable the feature starting in Jan 2007, and disabled it in future hardware products that were introduced after this date. AMD is currently being sued by Opti on the exact same issue." but we still think that there is more to it. 

Last modified on Monday, 03 November 2008 17:17
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments