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Unread 20-08-2016, 09:14 AM   #1
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Am4

Hello everyone

I will start by saying that I had got to the point where the idea of AMD seriously competing with Intel was starting to remind me of this:



But the recent news suggests that they will do just that! My prayers have been answered lol.

AMD's new architecture, Zen, delivers 40% more IPC (Instructions Per Clock) than Excavator (Carrizo APU) which itself delivered 40% more IPC than Bulldozer (FX CPUs) [according to AMD's internal testing].

AM4 platform key technology features include:

DDR4 Memory
PCIe Gen 3
USB 3.1 Gen2 10Gbps
NVMe
SATA Express

That's pretty much the meat of it for now, although here are some more details extracted from this article at techfrag:
Quote:
In addition to what we already know, AMD confirmed that the desktop versions will utilize a new cache memory hierarchy. They will feature 8MB of L3 cache along with a significantly enhanced pre-fetcher, seperate low latency L1 instruction and data caches as well as a large unified L2 cache.

AMD Zen is built on the same 14nm FinFET process as their Polaris GPUs. AMD also revealed that it has improved the instruction schedule window by 1.75 times and its execution resources by 1.5 times. Overall, Zen will potentially provide around five times the amount of bandwidth compared to previous designs.
And here are some details extracted from this article at PCWorld:

Quote:
2. Itís not a CPU. Technically Summit Ridge isnít a CPU, but an SoC, which means thereís no chipset needed for most of the functionality. On at least one Summit Ridge demo board, we spied a chip that appeared to handle the SATA and SATA Express ports. But these are engineering boards, so who knows.

7. It ainít just claims. In a demo we witnessed, a Summit Ridge appeared to be every bit as fast as Intelís new Broadwell-E CPUs. So haters, ease on down the road.

10. Youíll have to wait until 2017 to build one. You wonít be able to snag one on Newegg this year. The chip may make a limited appearance in 2016, but only in prebuilt systems. AMD says Summit Ridge will ship in volume early next year. Naples isnít expected until the second quarter of the next year.


There is an article on Tom's Hardware pointing out a steep rise in AMD's stock prices:



That makes a diehard AMD fan like me very optimistic. They won't be beaten into submission just yet. It should also be cheering for Intel users - if AMD delivers on their promises of improved performance and efficiency, Intel will be forced to start offering more competitive prices if they want to maintain a foothold anywhere other than the super-high-end/elite market.

Oh, and one more thing. One of the things I have always loved about AMD is their approach to socket design - while Intel has about ten different sockets on the go at once (it seems), AMD currently has four, and that's including mobile. This new generation will have two - one for mobile and one for desktop.


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Unread 22-08-2016, 05:28 PM   #2
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Re: Am4

It's about time!

However, this 2017 chip only just managing to match the Broadwell-E performance. AMD really need something like Pentium 4 Vs Athlon performance advantage to get ahead.
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Unread 22-08-2016, 07:35 PM   #3
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Re: Am4

All in good time if they can pull off the same increase in performance in the chip that follows it, and do it quickly enough, they ought to catch up (or maybe even overtake...a guy can dream). Apparently they already have a team working hard on Zen's successor, I think the idea is they have two teams working every other generation.

It's kind of a coin toss using this one chip for everything (server right down to laptop possibly even tablet). If it's good, they can make a lot of money and build on it. If it's crap, they're sunk.

At any rate, by the time I can afford to drop ~£1.5k on a new system Zen will have been out a few months probably, so I can see what other people think of it first
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Unread 23-08-2016, 10:00 PM   #4
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Re: Am4

There should be more news tomorrow, after Hot Chips, but for now a little tidbit:

"Unlike Bulldozer architecture, where a module shared certain parts, the new Zen quad-core unit, named as the CPU-Complex (CCX) will each have its dedicated 512KB of L2 cache and share 8MB of L3 cache."





Source: AMD Zen architecture detailed even further - AMD - News - ocaholic
Which cites it's source as: https://www.techpowerup.com/225248/a...pu-complex-ccx
Which cites it's source as: https://translate.google.com/transla...r-3301375.html
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Unread 24-08-2016, 07:47 AM   #5
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Re: Am4

My Google News alert isn't working D: but a quick search with DuckDuckGo found this article on Anandtech: AMD Zen Microarchiture Part 2: Extracting Instruction-Level Parallelism

It confirms the info from the last post, and includes a whole lot more. Here's some of it:

Quote:
Zen will be AMDís first foray into a true simultaneous multithreading structure


Quote:
AMD has a couple of tricks up its sleeve for Zen. Along with including the standard ISA, there are a few new custom instructions that are AMD only.



Some of the new commands are linked with ones that Intel already uses, such as RDSEED for random number generation, or SHA1/SHA256 for cryptography. The two new instructions are CLZERO and PTE Coalescing.

The first, CLZERO, is aimed to clear a cache line and is more aimed at the data center and HPC crowds. This allows a thread to clear a poisoned cache line atomically (in one cycle) in preparation for zero data structures. It also allows a level of repeatability when the cache line is filled with expected data. CLZERO support will be determined by a CPUID bit.

PTE (Page Table Entry) Coalescing is the ability to combine small 4K page tables into 32K page tables, and is a software transparent implementation. This is useful for reducing the number of entries in the TLBs and the queues, but requires certain criteria of the data to be used within the branch predictor to be met.
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Unread 07-09-2016, 10:32 PM   #6
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Re: Am4

From AMD's AM4 Socket Comes To Fore (Tom's Hardware)





Quote:
The new AM4 alignment includes X/B/A300 configurations for small form factors, A320 for essential applications and B350 for mainstream offerings. The as-of-yet unannounced (TBA) enthusiast chipset, which will power the forthcoming Zen CPUs, remains somewhat shrouded. It's logical to assume that it will provide "more" of the core feature set (such as more PCIe lanes, DDR4 memory channels, etc.). In either case, AMD intends to support the AM4 platform for the foreseeable future.
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Last edited by habibjp; 07-09-2016 at 10:35 PM..
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Unread 20-09-2016, 10:19 PM   #7
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Re: Am4

AMD's new AM4 socket spotted in the wild, ready for Zen - TechSpot

It has 1331 pins, they should have given it 6 more

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Unread 24-09-2016, 01:34 AM   #8
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Re: Am4

AMD 7th Gen Bristol Ridge and AM4 Analysis: Up to A12-9800, B350/A320 Chipset, OEMs first, PIBs Later

Quote:
Over the last two weeks, AMD officially launched their 7th Generation Bristol Ridge processors as well as the new AM4 socket and related chipsets. The launch was somewhat muted, as the target for the initial launch is purely to the big system OEMs and system integrators, such as Lenovo, HP, Dell and others Ė for users wanting to build their own systems, ĎProduct-in-Boxí units (called PIBs) for self-build systems will come at the end of the year. We held off on the announcement because the launch and briefings left a number of questions unanswered as to the potential matrix of configurations, specifications of the hardware and how it all connects together. We got a number of answers, so letís delve in.
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Unread 28-09-2016, 11:19 PM   #9
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Re: Am4

AMD's Zen CPUs are getting dedicated small form factor chipsets | PCGamesN
Quote:
As well as the X370, B350 and A320 chipsets which have already been mentioned, there is also going to be dedicated X300, B300 and A300 chipsets specifically created for small form factor motherboards.
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Unread 02-10-2016, 09:12 PM   #10
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Re: Am4

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