Showing posts with label amd. Show all posts
Showing posts with label amd. Show all posts

Tuesday, May 10, 2011

Apple iMac (spring 2011) review

The heaviest of heavyweights in the all-in-one field has seen another update, another batch of new internals to liven up the aging (but still classy) chassis. Apple unveiled its latest iMac refresh last week, surprising nobody with a new selection of AMD Radeon HD graphics cards, quad-core Intel Sandy Bridge processors, and solid-state storage options, all designed to do one thing: go faster.

These latest iMacs are quite naturally the speediest yet, as you'd expect, but with the right configuration they can be properly quick. Faster internals plus Thunderbolt ports on the outside turn what's supposed to be a family-friendly and eye-catching machine into an unassuming powerhouse that might just be quick enough for professional users. There's a more important question, though: is this $1,999 system the right choice for you?

Hardware

When Apple refreshed the iMac lineup last year we sampled the 21.5-inch model, svelte and sweet and a good choice for your average household. This time we moved up to the full 27-inch size, sporting a Core i5 processor that hums along at 3.1GHz. This is the processor you get if you opt for the pricier configuration of the bigger model and resist the urge to make any other customizations -- but cycle-hungry users can spend an extra $200 to step into a 3.4GHz Core i7.

Either way you get four cores, ours came paired with 4GB of 1333MHz, DDR3 RAM, installed as two 2GB DIMMs, and a 1TB 7,200RPM, SATA drive. Pushing pixels to that 27-inch, 2,560 x 1,440 resolution IPS panel is an AMD Radeon HD 6970M graphics card with 1GB of GDDR5 memory. That, thanks to the dual Thunderbolt ports tucked around the back, gives users a new-found ability to power a lot of external displays, in theory up to four thanks to the dual-channel nature of each port. We managed to get two additional displays lit up, but the LED-backlit monitor here is more than spacious enough for most use, and is certainly bright and gorgeous enough too -- but you knew that.


In fact you probably already know a lot about how this looks because, other than the faster internals, there isn't a lot new here. It's the same design that Apple's been hawking for a few years now. It still looks good, modern and understated styling matching your modern and understated life, but we're left wanting some updates. That SD card slot is still dangerously close to the DVD-ROM slot (which still won't accept Blu-ray discs), and the power button is still in exactly the right spot to confound new users and frustrate experienced ones as they accidentally hit it every time they reach to tilt the display back.

And we can't help but wish we could get a little more interactive with that hyper-glossy display, which makes for a heck of a good mirror when turned off. Apple of course has patents out for what looks like a touchable iMac and we're a bit disappointed they didn't come to fruition here -- though we would hate to smudge up that surface. There's still no matte option, but at least you can opt out of getting a Magic Mouse and substitute in a Magic Trackpad this time.

Oh, and there's a new FaceTime HD webcam stuck in the bezel, for those about to chat.

Performance


This machine has the higher of the two default configurations for the 27-incher, and we found it more than adequate for just about anything we threw at it. Obviously the gaming selection is still a little limited here, but Half-Life 2 and Portal 2 played full-res without a hitch. As you'd expect a 1080p clip loads quickly and cycles just fine -- we had five simultaneous 1080p clips going without a hint of frame drop on any.

In fact about the only the only thing that really caused a stutter was trying to edit a 4K video clip in REDCINE -- it was still workable, but we had to view it at half-res to get the preview render looking smooth. Hardly a deal-breaker. If you're looking for more synthetic benchmarks, we scored 8,465 in Geekbench, a 30-second 720p clip exported from iMovie in 20 seconds, and a 1080p clip took under a minute.

Wrap-up


So could a pro-level user, someone who spends their days in Photoshop or Premiere or even REDCINE be happy here? Yes, surprisingly, they could -- especially with the addition of an internal SSD (a $500 option for 256GB) and a high-speed external storage array connected via Thunderbolt. It wouldn't be our choice, and whether it makes sense to buy something like this versus a dedicated machine with an external display is another question entirely, but if you wanted to, you certainly could.

However, for a general consumer setup we can't help but think this is a bit too much. The vastly more affordable and still hugely capable 21.5-inch model makes a lot more sense for a lot more people. But, for ease of setup, aesthetic appeal, and overall performance and flexibility, the iMac is as hard to ignore as ever.

Wednesday, May 4, 2011

NVIDIA losing ground to AMD and Intel in GPU market share


NVIDIA may be kicking all kinds of tail on the mobile front with its ubiquitous Tegra 2 chipset, but back on its home turf of laptop and desktop graphics, things aren't looking so hot. The latest figures from Jon Peddie Research show that the GPU giant has lost 2.5 percentage points of its market share and now accounts for exactly a fifth of graphics chips sold on x86 devices. That's a hefty drop from last year's 28.4 percent slice, and looks to have been driven primarily by sales of cheaper integrated GPUs, such as those found inside Intel's Clarkdale, Arrandale, and most recently, Sandy Bridge processors. AMD's introduction of Fusion APUs that combine general and graphics processing into one has also boosted its fortunes, resulting in 13.3 percent growth in sales relative to the previous quarter and a 15.4 percent increase year-on-year. Of course, the real profits are to be made in the discrete graphics card market, where NVIDIA remains highly competitive, but looking at figures like these shows quite clearly why NVIDIA is working on an ARM CPU for the desktop -- its long-term survival depends on it.

Tuesday, March 8, 2011

AMD launches Radeon HD 6990 powerhouse for $699, maintains 'world's fastest' title

If you're scoring at home, NVIDIA currently holds the lead in single-GPU graphics cards with its GeForce GTX 580, but ATI's dual-chip Radeon HD 5970 has been holding down the absolute speed crown for a good long while. Now, bearing the name of AMD Radeon HD 6990, its successor sidles up to the throne and demands attention as the fastest single expansion board you can plug into your shiny new motherboard. The 6990 boasts a massive 4GB of GDDR5, 3,072 Stream Processors, 64 ROPs, and an 830MHz core clock speed. A dual-BIOS switch will let you crank that clock up to 880MHz with a corresponding increase in voltage, but don't expect to see much overclocking headroom above that.

Reviewers note, alongside their fawning assessment of the world's best performance, that the HD 6990 is a massively power-hungry card (375W TDP) and one that makes quite a bit of noise while going through its herculean tasks. That's in spite of a new vapor chamber cooling system that allegedly supports up to 450W of thermal output. If all this strikes you as a somewhat flawed execution, maybe you'll join us in hoping NVIDIA's imminently upcoming response, dubbed the GTX 590, will be able to offer a neater, more efficient assault on the extreme peaks of graphical performance.

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