terça-feira, 26 de junho de 2012

Intel HD Graphics 4000 and Intel HD Graphics 2500 Review

URL: http://www.xbitlabs.com/articles/graphics/display/intel-hd-graphics-4000-2500.html


Ivy Bridge processors didn't really impress us that much, because they didn't turn out that much more advanced than their predecessors. However, we haven't yet had a chance to really dig into the performance and features of their graphics cores. Let's make up for this omission and test their graphics. What if obtained results completely change our opinion about them?

quarta-feira, 20 de junho de 2012

Faster USB 3.0 Performance: Examining UASP And Turbo Mode

URL: http://www.pheedcontent.com/click.phdo?i=8096345dd5f50afe85ba61efc9bc07bb


Faster USB 3.0 Performance: Examining UASP And Turbo ModeWhy is it that an interface that operates at 5 Gb/s never reaches corresponding transfer rates? Our investigation reveals that not all USB 3.0-based solutions are created equal, and we explore two technologies used to bolster the performance of USB 3.0.

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quinta-feira, 14 de junho de 2012

256-bit AES encryption broken in SandForce SSD controllers

URL: http://feedproxy.google.com/~r/techreport/articles/~3/rK8LzxtvyOE/23096


When SandForce announced the SF-2000 SSD controller family, it touted the controller's ability to encrypt data with a 256-bit AES algorithm. The previous generation of SandForce controllers did 128-bit AES encryption, but the new chip added a second hardware engine with AES-256 support. Trouble is, the SF-2000 controller's 256-bit encryption doesn't work properly. Although the latest SandForce controllers encrypt data using AES, they do so using only 128 bits.

We just got off the phone with SandForce, who we contacted in order to better understand this issue. A company representative told us the SF-2000 controllers retained their AES-128 support because the US government doesn't allow products with 256-bit encryption to be sold to some countries. Sounds like the mechanism that determines whether ...

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quarta-feira, 13 de junho de 2012

sexta-feira, 8 de junho de 2012

7Gbps wireless transfers and streaming, no router required

URL: http://arstechnica.com/information-technology/2012/06/7gbps-wireless-transfers-and-streaming-no-router-required/


60GHz WiFi technology will stream media at ultra-high speed across short distances

The next year and a half will see big advancements in WiFi technology, with much faster routers to replace the ones you use today, and a new class of devices to support an incredible 7Gbps speed and clear a lot of the cable clutter out of your house.

The advancements will come in the form of two new technologies—802.11ac for whole-home routers using the 5GHz band, and 802.11ad for short-distance, high-speed transfers over the 60GHz band—that are at different stages of development, with the latter being on a slower track. The WiFi Alliance expects to certify 802.11ac products in early 2013, but the timeline for 802.11ad is a lot more iffy. The soonest 802.11ad products would be certified is late 2013, and even then the first certifications may not include routers or modems, WiFi Alliance Marketing Director Kelly Davis-Felner told Ars.

Many of the use cases for 7Gbps connections over the 60GHz band will be point-to-point, like streaming video from a handheld device to a TV or transferring tons of data without a cable. The ultimate goal is to have 60GHz connections co-exist alongside 2.4GHz and 5GHz ones in tri-band routers, but it's looking like the first 60GHz products won't include access points.

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Antec prepping new versions of P280 chassis

URL: http://feedproxy.google.com/~r/techreport/articles/~3/xXOR8vGaav8/23061


Computex — You're probably familiar with Antec's P280 chassis. We gave the case a TR Recommended award when we reviewed it earlier this year. While visiting Antec at the Computex trade show in Taipei, Taiwan, we got a sneak peek at a couple of new versions of the case due out this fall. Although both cases were mockups, they gave us an idea of what to expect.

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terça-feira, 5 de junho de 2012

Asus P8Z77-V Deluxe: New Look of the LGA 1155 Platform

URL: http://www.xbitlabs.com/articles/mainboards/display/asus-p8z77-v-deluxe.html


This system board boasts good accessories bundle, features smart design and supports all contemporary interfaces including wireless ones. Its BIOS is pretty easy to work with; it contains a lot of settings that can be adjusted within extensive ranges. An additional advantage is "Asus AI Suite II" software suite including numerous functional utilities.

segunda-feira, 4 de junho de 2012

Solid-state revolution: in-depth on how SSDs really work

URL: http://arstechnica.com/information-technology/2012/06/inside-the-ssd-revolution-how-solid-state-disks-really-work/


SSDs—how do they work? Not with magnets.

Way back in 1997, when dinosaurs roamed the earth and I was working part-time at the local Babbage's for $4.25 an hour, I scraped together enough spare change to purchase a 3Dfx Voodoo-based Diamond Monster 3D video card. The era of 3D acceleration was in its infancy and the Voodoo chipset was the chipset to beat. It all seems a bit silly now, but when I slapped that sucker into my aging Pentium 90 and fired up the new card's pack-in version of MechWarrior 2—which had texture-mapping and visual effects that the original 2D version lacked—my jaw hit the floor. I couldn't wait to speed-dial my buddy Matt and tell him that his much-faster Pentium 166 no longer brought all the polygons to the yard.

That video card was the most important PC upgrade I ever made, sparking a total change in my perception of what computers could do. I didn't think I would ever again experience something as significant as that one single upgrade—until the first time I booted up a laptop with a solid-state drive (SSD) in it. Much like that first glimpse of a texture-mapped MechWarrior 2, that first fast boot signaled a sea change in how I thought and felt about computers.

The introduction of 3D graphics changed our perceptions of computing not because it made colors brighter or virtual worlds prettier—though it did those things and they are awesome—but because it made a smoothly responsive 30 and 60 frames per second gaming experience a standard. Solid-state drives have a similar effect. They're faster than spinning disk, to be sure, but their most important contribution isn't just that they are faster, but rather that they make the whole computer feel faster. They remove barriers between you and your PC, in effect thinning the glass between you and the things that you're doing with and through your computer.

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sábado, 2 de junho de 2012

Intel Ivy Bridge Processor Hits 7GHz Overclock Record

URL: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/ESBJkqk8UOU/intel-ivy-bridge-processor-hits-7ghz-overclock-record



MojoKid writes "Renowned Overclocker HiCookie used a Gigabyte Z77X-UD3H motherboard to achieve a fully validated 7.03GHz clock speed on an Intel Core i7 3770K Ivy Bridge processor. As it stands, that's the highest clockspeed for an Ivy Bridge CPU, and it required a steady dose of liquid nitrogen to get there. HiCookie also broke a record for the highest memory speed on an Ivy Bridge platform, pushing his G.Skill Trident X DDR3-2800 memory kit populated in four DIMM slots to 3,280MHz. Not for the faint of heart, the record breaking CPU overclock required that HiCookie pump 1.956V to the processor, according to his CPU-Z screenshot. The CPU multiplier was set at x63."

Read more of this story at Slashdot.