Graphics processing unit Stories October 23, 2015

AAPL: 115.50

1.74

When Microsoft launched its first full-on laptop, the Surface Book, it made a big point of claiming that the machine was twice as fast as a 13-inch MacBook Pro. Benchmark tests by PCWorld show that this claiming is misleading, though the dedicated graphics card available in certain models does pay off for some uses.

The site’s tests showed that in pure CPU benchmarks, the MacBook Pro was actually slightly faster than the Surface Book. This remained true for Geek Bench 3 tests, which simulate real-life usage …  expand full story

Graphics processing unit Stories May 12, 2015

Malware hidden in Nvidia GPUs can infect Macs too, say developers behind proof of concept

Anonymous developers who have successfully infected Nvidia GPU cards with malware on both Linux and Windows machines say that the same can be done on Macs, and that they will release the proof soon. The aim of the whitehat developers is to raise awareness of this new method of attack, reports IT World.

The team successfully created a piece of malware called WIN_JELLY which acts as a Remote Access Tool, enabling attackers to control a machine over the Internet. They now plan to release a version for OS X called MAC_JELLY, demonstrating that Macs too are vulnerable.

There are, they say, two core problems. First, the growing power of modern GPUs means that it is increasingly common for processing tasks to be passed to them, something that would look legitimate to the OS. Second, most security tools designed to detect malware don’t scan the RAM used by the GPU.

The developers hint that the Mac version of the exploit will use OpenCL, a framework for writing code that can run on multiple platforms – including GPUs – and which is installed as standard as part of OS X.

While Mac and iOS malware is rare, neither platform is immune from attack. Wirelurker was last year found to be capable of infecting non-jailbroken iOS devices when connected to Macs running compromised software, and Flashback infected hundreds of thousands of Macs back in 2012.

Apple recently pulled many antivirus apps from the iOS app store, though this may be because many of them performed no useful function.

Via Slashdot

Graphics processing unit Stories January 5, 2015

NVIDIA sets the bar high for Apple’s A9 chip as early Tegra X1 benchmarks significantly outperform A8X

NVIDIA has thrown down the gauntlet to Apple in the mobile chip power stakes. While the A8X chip used in the iPad Air 2 has so far blown away the competition, NVIDIA has shown off benchmarks indicating that its new mobile superchip, the Tegra X1, leaves it standing.

The benchmark data shared with SlashGear were heavier on graphics than hard data, but appear to show that the chip significantly outperforms the A8X, with NVIDIA saying that it will offer “silky-smooth 60fps 4K video.” The one number the company did share is that when throttled back to match the GPU performance of the Apple chip, power efficiency was 1.7 times better.

Graphics processing unit Stories November 23, 2014

handbrakeThe developers of Handbrake just announced the 0.10 update to their extremely popular and useful Open Source video transcoding product. Originally focused on ripping DVDs, the product now can be used for transcribing many different types of files/codecs to almost any other. Today’s headliner updates include H.265 and VP8 encoding.

  • The LibAV AAC encoder is now the default as FAAC has been removed.
    • This encoder is adequate for most, but until it improves a bit further, we have enabled support for the FDK-AAC encoder also.
      • This FDK option is a temporary measure until the LibAV encoder improves.
      • Note that FDK-AAC is much slower and will likely bottleneck the encode process, but will produce better quality audio.
  • H.265 encoder
    • Using x265 v1.4
    • This encoder is still early in it’s development, so is missing many H.265 features and optimisations.
  • Added VP8 Encoder (using libvpx)
    • Available in MKV files only.

Hit the download button in Handbrake or download here. Full change list below:

expand full story

Graphics processing unit Stories October 17, 2014

Update: Repair Extension Program…

Long-standing complaints that the 2011 MacBook Pro suffered from a manufacturing fault resulting in GPU glitches and failures don’t appear to be going away, as an online petition calling for Apple to fix or replace affected machines reaches more than 18,000 signatures.

To: Timothy D. Cook, Apple Inc Craig Federighi (Apple Inc) (Apple Inc), Apple Inc

Replace or Fix All 2011 Macbook Pro with Graphics Failure

The petition notes the premium spent to buy Apple laptops, and says that Apple’s only response to date has been to ask owners to pay for an extremely expensive logic board replacement …  expand full story

Graphics processing unit Stories May 21, 2014

Apple’s new expensive line of Mac Pro computers seem to be causing a headache for a tiny fraction of the Mac userbase. According to several professional video editors who have contacted us or posted information to various online forums, the recent OS X 10.9.3 update is breaking compatibility between some Mac Pro graphics cards and video editing applications such as Adobe Premiere Pro and Blackmagic DaVinci Resolve…

expand full story

Powered by WordPress.com VIP