If you haven't gotten the hint, today is all about Llano. The big story is of course
Llano's notebook appearance; however, in the coming weeks you'll be hearing a lot more about Llano on the desktop as well.
The 3850 has four cores running at 2.9GHz and doesn't support Turbo Core. On the GPU side it has the full Radeon HD 6550D configuration with 400 shader processors running at 600MHz.
Note that heavily-threaded applications actually favor the A8-3850 to the Core i3 2100 (its most likely target based on pricing rumors) thanks to its four cores. They may not be as efficient as the i3's cores, but you sure do have more of them. We have been discussing this tradeoff with AMD for quite a bit over the past couple of years. You lose out on single-threaded performance but you do gain better performance in heavily-threaded workloads. I had assumed that Turbo Core would partially solve this with Llano but 2.9GHz is going to be the fastest SKU AMD offers and it doesn't ship with any turbo enabled.
GPU Performance: Between a Radeon HD 6450 & 5570
Note that these scores are taken with DDR3-1333, however if we push the memory bus all the way to its limit on desktop (DDR3-1866) you end up with performance that's somewhere between a 6450 and a 5570. AMD's branding makes sense in this case (6550D).
Overall the Radeon HD 6550D in AMD's A8-3850 APU performs a lot like a discrete Radeon HD 6450 card. For a GPU that ships integrated with all high-end A8 APUs, I really can't complain. The real question is how does it stack up when compared directly to Sandy Bridge, which brings us to our next page...
Llano vs. Sandy Bridge: Finally, Acceptable Processor Graphics
Games that are more CPU bound however do show Llano's weakness. Both Dragon Age and Starcraft II have Sandy Bridge either outperforming or coming very close to Llano in frame rates. Those are most definitely the exception rather than the rule however; for the most part AMD is able to deliver entry-level discrete GPU performance with Llano.
Final Words
There are still a number of unanswered questions about Llano on the desktop. In the coming weeks we'll be looking at HTPC performance, power consumption, and hopefully we'll be able to figure out what the deal is with overclocking AMD's new mainstream APUs.
The question of processor graphics performance is open and closed. Llano offers what I'd expect to be the bare minimum from any processor offering a real performance oriented GPU. All of our bench suite is playable on Llano and its actually possible to drive up image quality settings without sacrificing playability. If you're looking to build an entry-level gaming PC, Llano is most likely going to be on your hit list this year.
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AnandTech - The Llano Desktop Preview: AMD A8-3850 CPU & GPU Performance
The Llano Desktop Preview: AMD A8-3850 CPU & GPU Performance
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