AMD plans to improve performance of its desktop computing platforms by launching a new accelerated processing unit as well as another generation of AM3+ and FM2+ motherboards with USB 3.1 and M.2 ports. The new APU — the AMD A10-7890K — will be the company’s most powerful hybrid processor ever, when it is released later this quarter. The new APU and motherboards will help AMD to maintain its competitive positions.

Same Thing, Only Faster

The upcoming AMD A10-7890K accelerated processing unit is based on the Kaveri design introduced two years ago. The APU will integrate two Steamroller modules (four x86 cores), 4 MB L2 cache, the AMD Radeon R7 integrated GPU with 512 stream processors and GCN 1.1 architecture, a dual-channel DDR3 memory controller (which supports up to DDR3-2133 memory) as well as second-generation video coding engine (VCE) and fourth-generation unified video decoder (UVC) units for video playback. Just like all modern hybrid processors from AMD, the new APU is compatible with heterogeneous system architecture specification 1.0 and can use its graphics core for general-purpose processing (in appropriate applications). The chip will feature unlocked multiplier.

The main difference of the new microprocessor compared to its predecessors will be slightly higher clock-rates and slightly better performance. AMD does not disclose exact specifications of the A10-7890K, but claims that its maximum turbo frequency will be 4.3 GHz, which means that its default clock-rate will likely hit 4 GHz or higher (AMD did not confirm this). It is unclear whether AMD plans to bundle its new Wraith cooler with the A10-7890K, but if the new chip gets the latest cooling solution, then it will get somewhat more competitive.

AMD’s latest APUs for desktops — also known as Godavari — feature upgraded power supply circuitry designed to deliver cleaner and higher amount of power to the die and are made using slightly refined GlobalFoundries’ 28 nm super high performance (SHP) process technology. Improved binning process and increased voltages (compared to the original Kaveri) enable AMD to increase clock-rates of its APUs gradually. This helps the company to sustain average selling price (ASP) of its desktop chips while staying competitive against Intel’s Core i3 and Pentium offerings.

AMD Kaveri Lineup
  A10-
7890K
A10-
7870K
A10-
7850K
A10-
7800
A10-
7700K
A8-
7670K
A8-
7650K
A8-
7600
 X4
860K
Modules 2 2 2 2 2 2 2 2 2
Threads 4 4 4 4 4 4 4 4 4
Core Freq. (GHz) up to 4.3 3.9-4.1 3.7-4.0 3.5-3.9 3.4-3.8 3.6-3.9 3.3-3.8 3.1-3.8 3.7-4.0
Compute Units 4+8 4+8 4+8 4+8 4+6 4+6 4+6 4+6 4+0
Streaming
Processors
512 512 512 512 384 384 384 384 N/A
IGP Freq. (MHz) unknown 866 720 720 720 754 720 720 N/A
TDP 95W 95W 95W 65W 95W 95W 95W 65W 95W
DRAM
Frequency
2133 2133 2133 2133 2133 2133 2133 2133 1866
L2 Cache 2x2MB 2x2MB 2x2MB 2x2MB 2x2MB 2x2MB 2x2MB 2x2MB 2x2MB
 

The release of the AMD A10-7890K accelerated processing unit may not be a breakthrough in terms of additional performance. However, it shows two important things. Firstly, AMD can increase clock-rates of its existing chips (which potentially means that overclockers can boost them further). Secondly, AMD is confident that its upcoming code-named Bristol Ridge APUs will be powerful enough to leave current-gen hybrid processors behind in terms of performance.

New Motherboards Incoming

AMD also revealed at CES that its partners are working on a new generation of socket AM3+ and socket FM2+ motherboards. The new breed of mainboards from various manufacturers will feature USB 3.1 gen 2 controllers (ASMedia ASM1142) that will enable USB type-A and USB type-C ports. Besides, select motherboards will also have M.2 connectors for solid-state drives.

The implementation of the USB 3.1 is relatively easy: the ASMedia ASM1142 controller requires two PCI Express 2.0 lanes (something that all modern AMD platforms have), everything that motherboard makers need to do is to install one chip and supporting logic. Meanwhile, a properly implemented M.2 connector for contemporary solid-state drives needs four PCI Express 3.0 lanes in order to provide up to 3940 MB/s of bandwidth. The AMD FX (AM3+) platforms do not support PCIe 3.0 natively at all, hence, AMD’s partners will have to either implement an M.2 connector using four PCIe 2.0 ports (which would limit bandwidth to 2000 MB/s), or use a PCIe switch to “convert” eight PCIe 2.0 lanes into four PCIe 3.0 lanes. The AMD A-series (FM2+) processors support PCIe 3.0 x16 and hence can support an M.2 port with PCIe 3.0 x4 bandwidth, but in that case graphics cards will have to work in PCIe 3.0 x8 mode. In general, it is possible to add USB 3.1 and M.2 to current-generation AM3+ and FM2+ platforms, but that comes at a cost.

Waiting for Next-Generation

Without any doubts, higher clock-rates and better feature-set will make AMD-based platforms faster and more compelling. Unfortunately, a minor increase in frequency as well as addition of the USB 3.1 and the M.2 to several new motherboards will hardly dramatically increase popularity of AMD’s A-series or FX-series microprocessors. Nonetheless, proper pricing and up-to-date features will help AMD to maintain its positions.

What the market is waiting for is the next-generation AMD platform that is based on the company’s microprocessors code-named Summit Ridge. The CPU developer hopes that its Zen micro-architecture will deliver 40% higher IPC (instructions per clock) performance compared to the predecessor, whereas new 14nm/16nm FinFET process technologies will help to lower power consumption and/or increase clock-rates.

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  • Pissedoffyouth - Saturday, January 9, 2016 - link

    as a massive AMD fanboy why the hell would you buy a AM3 mobo in 2016? Reply
  • Oxford Guy - Saturday, January 9, 2016 - link

    8320E for $100 plus UD3P board from Microcenter ($50 with CPU bundle pricing) = 4.3 - 4.5 GHz for very little. If you don't need fancy USB 3.1 and M.2 ports, or dual GPUs, it can still be a good enough value. Use the savings (even with the cost of a CPU cooler) to put more into the GPU. An FX at 4.3 - 4.5 is fine for a lot of workloads. $150 is rather inexpensive for a CPU and board and can be a budget Blender platform, and such. Another option is to use it at stock and make it a server. Reply
  • Oxford Guy - Saturday, January 9, 2016 - link

    Do note that Tech Report's benchmarks in at least one article with an overclocked 8320E appear to be very bottlenecked because APM doesn't look like it was disabled. That throttles the CPU down to 95 watts. It uses around 86 watts at stock. Reply
  • Namisecond - Saturday, March 12, 2016 - link

    Shouldn't you be waiting on AM4 and Zen in the latter half of the year rather than putting money in another round of the AM3 platform? Reply
  • Namisecond - Saturday, March 12, 2016 - link

    The operative word here is "fanboy" Reply
  • Assimilator87 - Sunday, January 10, 2016 - link

    Please correct me if I'm wrong but as of now, there isn't a single Mini-ITX FM2+ board with a DisplayPort. Is that not absolutely insane? That means zero options for UHD at 60Hz. That severely limits Kaveri's appeal for HTPC use. Reply
  • stephenbrooks - Sunday, January 10, 2016 - link

    I've never heard of them advertising APUs as being a good thing to drive a 4K60 display. They'll tell you the discrete R9 390X or similar is for that. Reply
  • Assimilator87 - Sunday, January 10, 2016 - link

    I know you're trying to be helpful so thank you, but I was speaking specifically about HTPC use. I'm sure we can all agree that no discussion involving Kaveri and 60Hz UHD pertains to gaming =P Reply
  • Namisecond - Saturday, March 12, 2016 - link

    Does it support HDMI 2.0? That's a possible out. BTW, how's the AMD platform for UHD? Do you think AMD will bring hardware HEVC decode/encode to the hardware? Reply
  • nos024 - Tuesday, January 12, 2016 - link

    That is why this release makes no sense. A perfect platform for mini-ITX, HDMI 2.0, and M.2. I would've bought one if there were some good mini-ITX FM2+ mobo. Reply

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