AMD A8-3850 Llano APU and Lynx Platform Preview

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A couple of weeks back, we took a look at AMD's Llano mobile platform, with a mainstream notebook from Compal, and we came away impressed. If you're unfamiliar with Llano, be sure to check out our launch coverage (available here). But to quickly recap, Llano is the codename for AMD's latest Fusion-based product, that combines a CPU and GPU on a single piece of silicon. In the mobile space, Llano offers a capable quad-core CPU, with excellent DX11-class integrated graphics, in a very low power-envelope. Those things translate into good performance and solid battery life in a notebook, two highly desirable traits of mobile system.

AMD is now ready with Llano-based products for the desktop. On the desktop, Llano offers similar things. In fact, the underlying technology is identical. But the desktop landscape is very different from the mobile space. Desktops aren't constrained by the limited form-factors and thermal requirements of mobile systems, and as such, Llano has to compete with a much broader range of options and architectures.


AMD Llano Die Shot...

AMD thinks they have struck the right balance between CPU and GPU performance though, and at some very budget-friendly price points. Ultimately, consumers will decide if AMD is on target. In the meantime, we've got the first AMD Llano-based desktop APU, the A8-3850, in the lab, complete with a quartet of A75-chipset based motherboards. Pairing an A-Series APU and A-Series chipset results in what AMD is calling their "Lynx" platform. Cool codenames aside, there's lots of tech to discuss here, so take a gander at the features and specifications below and join as as we find out if Llano is as desirable on the desktop as it is in a notebook...

AMD A8-3850 "Llano" APU
Specifications & Features
Tech / Package 32nm / FM1 905-pin lidded μPGA, 40x40 mm, 1.27 mm pitch
TDP Configurations 65W and 100W configurations
Processor Core “Stars” 32nm HKMG process core (up to 4 cores), 128 KB L1 Cache(64 KB Instruction, 64 KB Data) 1 MB L2/Core, 128-bit FPUs
Memory Up to DDR3 1866
Graphics Core Up to 400 Radeon Cores, DirectX 11 capable, UVD3
Displays Digital Display I/F DP0: Display Port, HDMI, DVI
Digital Display I/F DP1: Display Port, HDMI, DVI
Graphics Features AMD Dual Graphics
Blu-ray 3D
AMD Steady Video
AMD Perfect Picture
DisplayPort 1.1a, HDMI 1.4a
 
Power Management Multiple low-power states
32-nm process for decreased power consumption
PCIe core power gating
PCIe speed power policy
GPU power gating of Radeon Cores and video decode (UVD3)
AMD Turbo Core technology on select models
AMD A75/AMD A55 FCH  
Tech/Package 65nm / FC BGA, 605-Ball, 23x23mm, .8mm pitch
TDP Configurations A75: 7.8W, A55: 7.6W
UMI x4 Gen 2
SATA A75: 6 ports at 6 Gb/s, A55: 6 ports at 3 Gb/s
RAID 0,1,10
USB A75: 4 USB 3.0 Ports, 10 USB 2.0 Ports, 2 USB 1.1 Internal Ports A55: 14 USB 2.0 Ports, 2 USB 1.1 Internal Ports
PCIe GPPs 4x1 Gen2
FIS Support A75 only
CIR CIR Receiver
Clock Gen Integrated
Power Rails SVID for VDDCR_CPU & VDDR_NB, fixed voltage for other rails
 
Software/Firmware
 
Software Drivers: Windows 7, Windows Vista, Windows XP, Linux


Click to Enlarge

The specifications above give a glimpse into what makes Llano tick, but the slide pictured here tells more of the story. With Llano, AMD has taken the position that GPU performance is more important than CPU performance, when said CPU is "fast enough" for the vast majority of workloads. To illustrate, the slide above compares a Llano die with a Sandy Bridge die. Although they're of roughly similar size (228mm2 vs. 216mm2), AMD has devoted much more real estate to Llano's integrated GPU core, whereas Intel's x86 cores cover a larger area. There are far more technical details at play here, and we're simplifying the explanation, but the moral of the story is that Intel's architecture will offer better general compute / x86 performance, while AMD's will offer better graphics and multimedia performance. Which aspect of system performance is more important is up to the application workload, of course, but the diverging philosophies are interesting to say the least.

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Terrific review Marco, very thorough!

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Yesterday during the HP/AMD training I attended for work they explained to us some of the details about their upcoming APU. It was very interesting and your review was able to show things in much better detail. Thanks for the extensive review and benchmarks.

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"Bulldozer please ! It doesn't make sense for me to explain the flaws or repeat what Marco said in the conclusion. Llano is not for me, its too weak and still cant compete with a dual core Sandy Bridge chip, that says a lot.

"So, a couple of questions though, the AMD A8-3850 doesn't turbo higher than 2.9? Can it be overclocked? And last, to clear a confusion, will Bulldozer Chips have integrated GPUS?"

-Optimus

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"The part that I was most impressed with , was the Cyberlink's Media Show Espresso Encoding test, particularly, the W/O Hardware accelaration against the i5-2500, Yes, it took One full minute, but thats quite impressive considering that the AMD A8-3850 is clocked at 2.9, yet you have to factor in , that the i5-2500 turbos up to 3.7, thats a 800MHz advantage, and the AMD A8-3850 beat the Phenom X4 980 at 3.8. "

-Optimus

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$200 is a pretty attractive price point for a system that can handle modern games. And considering that includes the motherboard, processor and gpu, how much easier could it get to upgrade an older system ( as in my Athlon X2 4400 and 7200 gts).

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thanks for the most thorough review and evaluation.I think that the AMD A8-3850 is going to be very successful.Not going to be a problem using 450W [bronze] PSU with these builds and sure to please mainstream folks.A Multimedia user experience that's expected here is delivered ...at a great price.

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That was a extremely through review. I agree that I think AMD will be able to compete with Intel with these chips. Obviously they concentrated more on GPU performance than CPU performance so if applications are optimized to use the power of the GPU then they will run even better on the AMD chips. It would be interesting to know how much of a limit is created by the software we are running versus the hardware.

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I was just thinking of some of the neighbors [soccer mom & dad types] this affordable platform would be perfect for them and the younger kids in the their home.Especially on a affordable rig built by members in HH  as opposed to 'big box' store.My new neighbor runs landscaping crews he could care less about benchmarks and such.But he would be very interested in an updated modern  affordable pc with multimedia capabilities such that this platform provides at price he can afford.For general family use pc.That's very efficient..Heck could even get his 12 year old step son to build it.

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There is no mention of Eyefinity, does this mean there is no support for it? :( That's quite a deal breaker for me.

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Schmich:

There is no mention of Eyefinity, does this mean there is no support for it? :( That's quite a deal breaker for me.

check out those mainboards [Crossfire -ready] and add a vid card plenty of choice out there for Eyefinity and budget

Note : may have to bump the PSU to 650W but that depends

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