Weak Apple PRNG Threatens iOS Exploit Mitigations

Trailrunner7 writes “A revamped early random number generator in iOS 7 is weaker than its vulnerable predecessor and generates predictable outcomes. A researcher today at CanSecWest said an attacker could brute force the Early Random PRNG used by Apple in its mobile operating system to bypass a number of kernel exploit mitigations native to iOS. ‘The Early Random PRNG in iOS 7 is surprisingly weak, ‘ said Tarjei Mandt senior security researcher at Azimuth Security. ‘The one in iOS 6 is better because this one is deterministic and trivial to brute force.’ The Early Random PRNG is important to securing the mitigations used by the iOS kernel. ‘All the mitigations deployed by the iOS kernel essentially depend on the robustness of the Early Random PRNG, ‘ Mandt said. ‘It must provide sufficient entropy and non-predictable output.'” Read more of this story at Slashdot.

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Weak Apple PRNG Threatens iOS Exploit Mitigations

Nvidia’s New Laptop Cards Are Battery-Saving Scorchers

Integrated graphics are getting better and better , but if you really want to game on your laptop, ain’t nothing gonna beat discrete. Nvidia’s new line of GTX mobile cards are about as good as it gets, and they’re not just bringing performance upgrades, but better battery life as well. Read more…        

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Nvidia’s New Laptop Cards Are Battery-Saving Scorchers

FFmpeg’s VP9 Decoder Faster Than Google’s

An anonymous reader writes “A VP9 video decoder written for FFmpeg, FFvp9, now holds the title of being the world’s fastest VP9 video decoder. FFvp9 is faster than Google’s de facto VP9 decoder found in libvpx, but this doesn’t come as too much of a surprise given that FFmpeg also produced a faster VP8 video decoder than Google a few years back with both single and multi-threaded performance.” Read more of this story at Slashdot.

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FFmpeg’s VP9 Decoder Faster Than Google’s

These Are the Brains of the Next Bitcoin Mining Monster

In just a few short years, bitcoin mining has come a long way , from CPUs, to GPUs, to specialized, single purpose, system-on-a-chip beasts. There’s still progress to be made, though, more efficient mining marvels to build. This is that progress. Meet the (prototype) brains of an insane digital drill. Read more…        

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These Are the Brains of the Next Bitcoin Mining Monster

A Fully Loaded New Mac Pro Will Cost You $14,000

After no short period of waiting, the new Mac Pro has finally gone on sale today . All along it’s promised to pack punch, and it might just prove to be your ultimate work station . But absolute power will cost you. Read more…        

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A Fully Loaded New Mac Pro Will Cost You $14,000

Intel SSD Roadmap Points To 2TB Drives Arriving In 2014

MojoKid writes “A leaked Intel roadmap for solid state storage technology suggests the company is pushing ahead with its plans to introduce new high-end drives based on cutting-edge NAND flash. It’s significant for Intel to be adopting 20nm NAND in its highest-end data center products, because of the challenges smaller NAND nodes present in terms of data retention and reliability. Intel introduced 20nm NAND lower in the product stack over a year ago, but apparently has waited till now to bring 20nm to the highest end. Reportedly, next year, Intel will debut three new drive families — the SSD Pro 2500 Series (codenamed Temple Star), the DC P3500 Series (Pleasantdale) and the DC P3700 Series (Fultondale). The Temple Star family uses the M.2 and M.25 form factors, which are meant to replace the older mSATA form factor for ultrabooks and tablets. The M.2 standard allows more space on PCBs for actual NAND storage and can interface with PCIe, SATA, and USB 3.0-attached storage in the same design. The new high-end enterprise drives, meanwhile, will hit 2TB (up from 800GB), ship in 2.5″ and add-in card form factors, and offer vastly improved performance. The current DC S3700 series offers 500MBps writes and 460MBps reads. The DC P3700 will increase this to 2800MBps read and 1700MBps writes. The primary difference between the DC P3500 and DC P3700 families appears to be that the P3700 family will use Intel’s High Endurance Technology (HET) MLC, while the DC P3500 family sticks with traditional MLC.” Read more of this story at Slashdot.

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Intel SSD Roadmap Points To 2TB Drives Arriving In 2014

Retail Radeon R9 290X Graphics Cards Slower Than AMD’s Press Samples

crookedvulture writes “AMD’s recently introduced Radeon R9 290X is one of the fastest graphics cards around. However, the cards sent to reviewers differ somewhat from the retail units available for purchase. The press samples run at higher clock speeds and deliver better performance as a result. There’s some variance in clock speeds between different press and retail cards, too. Part of the problem appears to be AMD’s PowerTune mechanism, which dynamically adjusts GPU frequencies in response to temperature and power limits. AMD doesn’t guarantee a base clock speed, saying only that the 290X runs at ‘up to 1GHz.’ Real-world clock speeds are a fair bit lower than that, and the retail cards suffer more than the press samples. Cooling seems to be a contributing factor. AMD issued a driver update that raises fan speeds, and that helps the performance of some retail cards. Retail units remain slower than the cards seeded to the press, though. Flashing retail cards with the press firmware raises clock speeds slightly, but it doesn’t entirely close the gap, either. AMD hasn’t explained why the retail cards are slower than expected, and it’s possible the company cherry-picked the samples sent to the press. At the very least, it’s clear that the 290X exhibits more card-to-card variance than we’re used to seeing in a PC graphics product.” Read more of this story at Slashdot.

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Retail Radeon R9 290X Graphics Cards Slower Than AMD’s Press Samples

Intel Linux Driver Now Nearly As Fast As Windows OpenGL Driver

An anonymous reader writes “Intel’s open-source Linux graphics driver is now running neck-and-neck with the Windows 8.1 driver for OpenGL performance between the competing platforms when using the latest drivers for each platform. The NVIDIA driver has long been able to run at similar speeds between Windows and Linux given the common code-base, but the Intel Linux driver is completely separate from their Windows driver due to being open-source and complying with the Linux DRM and Mesa infrastructure. The Intel Linux driver is still trailing the Windows OpenGL driver in supporting OpenGL4.” Read more of this story at Slashdot.

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Intel Linux Driver Now Nearly As Fast As Windows OpenGL Driver

A Co-processor No More, Intel’s Xeon Phi Will Be Its Own CPU As Well

An anonymous reader writes “The Xeon Phi co-processor requires a Xeon CPU to operate… for now. The next generation of Xeon Phi, codenamed Knights Landing and due in 2015, will be its own CPU and accelerator. This will free up a lot of space in the server but more important, it eliminates the buses between CPU memory and co-processor memory, which will translate to much faster performance even before we get to chip improvements. ITworld has a look.” Read more of this story at Slashdot.

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A Co-processor No More, Intel’s Xeon Phi Will Be Its Own CPU As Well

Intel’s 128MB L4 Cache May Be Coming To Broadwell and Other Future CPUs

MojoKid writes “When Intel debuted Haswell this year, it launched its first mobile processor with a massive 128MB L4 cache. Dubbed “Crystal Well, ” this on-package (not on-die) pool of memory wasn’t just a graphics frame buffer, but a giant pool of RAM for the entire core to utilize. The performance impact from doing so is significant, though the Haswell processors that utilize the L4 cache don’t appear to account for very much of Intel’s total CPU volume. Right now, the L4 cache pool is only available on mobile parts, but that could change next year. Apparently Broadwell-K will change that. The 14nm desktop chips aren’t due until the tail end of next year but we should see a desktop refresh in the spring with a second-generation Haswell part. Still, it’s a sign that Intel intends to integrate the large L4 as standard on a wider range of parts. Using EDRAM instead of SRAM allows Intel’s architecture to dedicate just one transistor per cell instead of the 6T configurations commonly used for L1 or L2 cache. That means the memory isn’t quite as fast but it saves an enormous amount of die space. At 1.6GHz, L4 latencies are 50-60ns which is significantly higher than the L3 but just half the speed of main memory.” Read more of this story at Slashdot.

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Intel’s 128MB L4 Cache May Be Coming To Broadwell and Other Future CPUs