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Thread: AMD Zen 2 could offer a 13 per cent IPC gain over Zen+

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    Re: AMD Zen 2 could offer a 13 per cent IPC gain over Zen+

    Quote Originally Posted by Tabbykatze View Post
    Woh, that escalated quickly.
    The irony of posting on a forum when Saudi weapons sales have helped prop up our own defence industry to over £43 billion over the last few decades.

    Also getting confused when it was Abu Dhabi who did the investment and not Saudi Arabia and most of that was in Global Foundries.
    Last edited by CAT-THE-FIFTH; 18-10-2018 at 10:49 AM.

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    Re: AMD Zen 2 could offer a 13 per cent IPC gain over Zen+

    Quote Originally Posted by Tabbykatze View Post
    Woh, that escalated quickly.
    Still my favourite graph of all time:

    https://trends.google.com/trends/exp...ated%20quickly

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    Re: AMD Zen 2 could offer a 13 per cent IPC gain over Zen+

    Since IPC is the main area AMD are slightly behind on this sounds promising.

    Do you think there'll be new mobos released too even though it's AM4 compatible?

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    Re: AMD Zen 2 could offer a 13 per cent IPC gain over Zen+

    Quote Originally Posted by lumireleon View Post
    AMD net income (2017): $43 million ...intel net income: $9.6 BILLION !!.....lets do the math 9,600,000,000 / 43,000,000 = 223 TIMES. AMD needs a SUPER miracle to take 50% of global PC/server sales
    It'll take some time before figures look good on AMD's side. At least the share price is up for AMD. Intel, on the other side, has lots of cash sitting around and they wont let the battle slide that easily imo

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    Re: AMD Zen 2 could offer a 13 per cent IPC gain over Zen+

    Quote Originally Posted by lumireleon View Post
    AMD net income (2017): $43 million ...intel net income: $9.6 BILLION !!.....lets do the math 9,600,000,000 / 43,000,000 = 223 TIMES. AMD needs a SUPER miracle to take 50% of global PC/server sales
    Show us on the dolly where AMD touched you.

    AMD is widely reporting to be in touching distance of the share of market split between Intel and AMD. Clearly Intel are involved in plenty of other markets/sectors/industries. Also if it WERE the case that Intel revenue was so high, AMD so low and AMD were still stripping the market share lead from Intel, that's rather to AMD's favour.


    Edit: My prediction. It's the Zen2@4.5 = 8700k@4.9 thought train, not my own but it seems eminently sensible.
    Last edited by MercutioUK; 21-10-2018 at 04:11 PM.

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    Re: AMD Zen 2 could offer a 13 per cent IPC gain over Zen+

    13% seems entirely reasonable to me. Zen was a completely new microarchtecture, and ANY new grounds-up design will have warts. Fix those problems and you get a nice boost in IPC. Not a surprise at all. Zen+ only got a minor bump in IPC because they could only make minor changes to the design, it's basically Zen with a bit of tuning. But Zen2 is where they go fix all the stuff that wasn't working right :-)

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    Re: AMD Zen 2 could offer a 13 per cent IPC gain over Zen+

    Quote Originally Posted by Zak33 View Post
    Quote Originally Posted by HEXUS
    In our first Pinnacle Ridge CPU reviews HEXUS discovered that the move to Zen+ cores delivered an approximate 10 per cent all-core performance uplift and incremental gaming gains over the previous gen. The IPC uplift witnessed was in single digits, between 3 and 5 per cent.
    Might have got this wrong but if a 3-5% IPC uplift gave 10% all core performance uplift... a 13% IPC uplift could potentially give way over 20% uplift....
    Probably not this time. The biggest performance boost in Zen+ came from reducing the cross-CCX memory latency, an improvement that doesn't help single core IPC at all but speeds up multi-core benchmarks and applications. That's one reason that AMD didn't bother with the full Zen+ improvements in the APUs (2200G and 2400G, Mobile Ryzen, and Embedded Ryzen), even though they are part of the second generation; those parts only have one CCX so the cross-CCX changes are meaningless.

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    Re: AMD Zen 2 could offer a 13 per cent IPC gain over Zen+

    Quote Originally Posted by lumireleon View Post
    AMD net income (2017): $43 million ...intel net income: $9.6 BILLION !!.....lets do the math 9,600,000,000 / 43,000,000 = 223 TIMES. AMD needs a SUPER miracle to take 50% of global PC/server sales
    AMD's net income is low for three reasons. They're pouring a lot of money into R&D, they are pricing their CPUs aggressively to gain market share, and GLobalFoundries isn't all that good at making chips. AMD's yields are likely to be far worse than Intel's. Intel has had problems over the years at designing chips, but they are really good at MAKING them.

    Yields of AMD chips from TSMC remain to be seen. Also unknown is what sort of clock rates AMD's designs will be able to hit on TSMC's 7nm process. It could turn out to be a disappointment, or something that will shake Intel to the multiple cores.

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    Re: AMD Zen 2 could offer a 13 per cent IPC gain over Zen+

    Quote Originally Posted by Shirley Dulcey View Post
    Probably not this time. The biggest performance boost in Zen+ came from reducing the cross-CCX memory latency, an improvement that doesn't help single core IPC at all but speeds up multi-core benchmarks and applications. That's one reason that AMD didn't bother with the full Zen+ improvements in the APUs (2200G and 2400G, Mobile Ryzen, and Embedded Ryzen), even though they are part of the second generation; those parts only have one CCX so the cross-CCX changes are meaningless.
    They didn't improve cross-CCX latency specifically, although that was one of the systems effected, they 'improved' (they actual fixed a bug but that's academic) in the memory subsystem so the improvement (3% IPC) was seen across the board in single and multithreaded workloads, and everything from Epyc to mobile and embedded.

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