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Cadence Announces First DDR4 Controller and PHY IP in 28-nm

By - Source: NanoWerk | B 28 comments

Electronic design automation company Cadence said that it has qualified its DDR4 SDRAM physical layer (PHY) and memory controller design IP in TSMC's 28-nm production process.

Cadence recently announced that it has developed "multiple" versions of its DDR PHY and controller IP based on advanced drafts of the DDR4 spec published by JEDEC.

"DDR4 is going to be the next big thing in DRAMs, but its signaling is challenging to handle," said Jim Handy of Objective Analysis in a prepared statement. "As PCs migrate to DDR4 DRAMs, this standard will become the volume leader, giving it a price advantage that will be impossible to ignore. ASIC designers who want to take advantage of that pricing are likely to need a lot of help putting a reliable interface on their products."

Cadence said that its PHY exceeds the data rates described by the DDR-2400 draft, but did not reveal what speeds have been achieved. The company also announced that it has a "low-power, all-digital mobile PHY implementation that exceeds the data rates called for in both the DDR-1600 and DDR-1866 DDR3 standards and the maximum data rate of the low-power LPDDR2 standard."

Cadence said that its DDR4 memory controller technology and PHY IP  is available now.

 

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Top Comments
  • 16 Hide
    mforce2 , September 10, 2012 1:24 PM
    I disagree , it didn't use to be a bottleneck. Now though the CPUs have integrated GPUs and those GPUs really do benefit from fast RAM. The CPU part doesn't really care that much, I agree.
  • 11 Hide
    killabanks , September 10, 2012 1:18 PM
    memory hasn't been a bottleneck for ages but at the end of the day ddr4 > ddr3
Other Comments
  • 11 Hide
    killabanks , September 10, 2012 1:18 PM
    memory hasn't been a bottleneck for ages but at the end of the day ddr4 > ddr3
  • Display all 28 comments.
  • 16 Hide
    mforce2 , September 10, 2012 1:24 PM
    I disagree , it didn't use to be a bottleneck. Now though the CPUs have integrated GPUs and those GPUs really do benefit from fast RAM. The CPU part doesn't really care that much, I agree.
  • 8 Hide
    Anonymous , September 10, 2012 1:34 PM
    Memory is still a bottleneck for integrated GPUs. More bandwidth and lower latency per channel is always welcome.
  • -4 Hide
    bustapr , September 10, 2012 1:41 PM
    is the ddr3 oversupply problem fixed yet?
  • -4 Hide
    memadmax , September 10, 2012 1:42 PM
    If you think that ram isn't a bottleneck then either you don't know what you are talking about or all you do is run graphics intensive apps(aka games) all day...

    Main ram is still turtle speed compared to a CPU and Cache ram.
  • 0 Hide
    idroid , September 10, 2012 1:43 PM
    overzealotMemory is still a bottleneck for integrated GPUs. More bandwidth and lower latency per channel is always welcome.


    That's exactly why it would be awesome if Nvidia or AMD make a GPU with RAM-BUS or something
  • 5 Hide
    alidan , September 10, 2012 1:50 PM
    mforce2I disagree , it didn't use to be a bottleneck. Now though the CPUs have integrated GPUs and those GPUs really do benefit from fast RAM. The CPU part doesn't really care that much, I agree.


    you are not using those embedded chips to really do anything high end, its really just an added bouns, for most if not all users of them that the graphics can be done better.

    if you are even a mild gamer, a low low end gpu beats out integrated.

    even the best integrated gpu is beaten out by a 50$ gpu, so in that regard i refuse to call it a real bottleneck.
  • 1 Hide
    EDVINASM , September 10, 2012 1:51 PM
    memadmaxIf you think that ram isn't a bottleneck then either you don't know what you are talking about or all you do is run graphics intensive apps(aka games) all day...Main ram is still turtle speed compared to a CPU and Cache ram.


    Can you please base your answer on real-world example? Any app I know doesn't benefit significantly from RAM throughout increasing even 30%. I think more than just DDR4 introduction is needed to tackle this. Although I have no RAM bottlenecks and I run 16GB 1600MHz (2x4x200MHz to be more precise) - that's in Adobe Preduction Suite and games.
    As for post above - while I do agree faster RAM helps integrated GPU I also know that these GPUs for the moment are nowhere near low-mid range dedicated GPUs so RAM speed isn't the only issue here.
  • 3 Hide
    bustapr , September 10, 2012 1:57 PM
    alidanyou are not using those embedded chips to really do anything high end, its really just an added bouns, for most if not all users of them that the graphics can be done better. if you are even a mild gamer, a low low end gpu beats out integrated. even the best integrated gpu is beaten out by a 50$ gpu, so in that regard i refuse to call it a real bottleneck.

    try thinking about mainstream laptops instead of desktops. integrated gpus are usually the best you can get on a laptop(like 99% of laptop users dont have discrete gpus in laptops) at its price. and people who have these laptops try to push its capabilities alot of the time either to play some game or to edit a video. better am would indeed help out in this area. true that for desktops, integrated graphics is beat out by cheap discrete, but its not usually the case for laptops.
  • 4 Hide
    Anonymous , September 10, 2012 2:01 PM
    AMD FM2 can benefit from DDR4 from later revisions.
  • -4 Hide
    mamailo , September 10, 2012 3:09 PM
    The main reason for current CPUs desings not increasing the core/module count is because ram can not keep the pace.
    It already happend en server space some models where canceled because of that.
  • -2 Hide
    Miharu , September 10, 2012 4:51 PM
    Quote:
    That's exactly why it would be awesome if Nvidia or AMD make a GPU with RAM-BUS or something

    Rambus have impressive number but it's not deliver in performance reign.
    Basicly Rambus have a faster rate but also a higher latency.
    Big job take less time but smaller job take more time.
    And most time you do small access.

    The only technology who can use somehow good use of Rambus is PS3 cpu (Cell cpu technology).
    :pt1cable: 

    It's also why DDR3-4 it's a prefer choice over Rambus with x86-x64 cpu.
    Higher latency like Rambus will give to any GPUs horrible performances issues.


    And the bootleneck it's mostly your motherboard... but when you upgrade for DDR4 you also change your motherboard. So you surely fix most case upgrading to DDR4.
  • -2 Hide
    memadmax , September 10, 2012 5:09 PM
    EDVINASMCan you please base your answer on real-world example? Any app I know doesn't benefit significantly from RAM throughout increasing even 30%. I think more than just DDR4 introduction is needed to tackle this. Although I have no RAM bottlenecks and I run 16GB 1600MHz (2x4x200MHz to be more precise) - that's in Adobe Preduction Suite and games.As for post above - while I do agree faster RAM helps integrated GPU I also know that these GPUs for the moment are nowhere near low-mid range dedicated GPUs so RAM speed isn't the only issue here.


    You didn't even bother reading my post did you?

    "or all you do is run graphics intensive apps(aka games) all day"

  • 4 Hide
    sherlockwing , September 10, 2012 5:41 PM
    All I want to know is if Z87 chipset will support this.
  • 1 Hide
    atminside , September 10, 2012 7:41 PM
    What memory does the Xbox 360 use? I heard it was even faster than DDR3. Is that kind of memory compatible with x86? I knew it's supper expensive though.
  • 2 Hide
    blazorthon , September 10, 2012 7:55 PM
    MiharuRambus have impressive number but it's not deliver in performance reign.Basicly Rambus have a faster rate but also a higher latency.Big job take less time but smaller job take more time.And most time you do small access.The only technology who can use somehow good use of Rambus is PS3 cpu (Cell cpu technology). It's also why DDR3-4 it's a prefer choice over Rambus with x86-x64 cpu.Higher latency like Rambus will give to any GPUs horrible performances issues.And the bootleneck it's mostly your motherboard... but when you upgrade for DDR4 you also change your motherboard. So you surely fix most case upgrading to DDR4.


    Someone knows nothing about Rambus' modern memory interfaces.
  • 2 Hide
    blazorthon , September 10, 2012 7:55 PM
    alidanyou are not using those embedded chips to really do anything high end, its really just an added bouns, for most if not all users of them that the graphics can be done better. if you are even a mild gamer, a low low end gpu beats out integrated. even the best integrated gpu is beaten out by a 50$ gpu, so in that regard i refuse to call it a real bottleneck.


    The Radeon 6550D of the Llano A8s can fight with the Radeon 6570 and is only beaten somewhat by the Radeon 6670 when given dual-channel DDR3-1866 RAM (most 1600 kits will have no trouble overclocking to 1866). That's an old AMD IGP. The new Trinity ones will be better and the next APU family after Trinity will probably have a huge performance boost.
  • 1 Hide
    blazorthon , September 10, 2012 7:57 PM
    ATMinsideWhat memory does the Xbox 360 use? I heard it was even faster than DDR3. Is that kind of memory compatible with x86? I knew it's supper expensive though.


    The 360 uses mere GDDR3. It's not expensive these days and it's not better than DDR3 for CPUs, although it can be better than DDR3 for GPUs.
  • 2 Hide
    blazorthon , September 10, 2012 7:57 PM
    Also, everyone, RAM is a bottle-neck for some applications. Compression, rendering, and some other things can benefit from faster RAM (although not with high efficiency, IE doubling RAM bandwidth and keeping the same latency might net a 30-50% performance increase assuming that the CPU can keep up). However, for some AVX accelerated work and some other things, RAM can increase performance with near 100% efficiency in performance increases per RAM bandwidth increases.
  • 0 Hide
    A Bad Day , September 10, 2012 8:31 PM
    alidanyou are not using those embedded chips to really do anything high end, its really just an added bouns, for most if not all users of them that the graphics can be done better. if you are even a mild gamer, a low low end gpu beats out integrated. even the best integrated gpu is beaten out by a 50$ gpu, so in that regard i refuse to call it a real bottleneck.


    A mid-end APU with fast RAM can run around a high-end APU with standard RAM, especially with AA, Anisotropic filtering, and high resolution.
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