Ryzen also moved lots of the chipset logic to the chip. This has reflected on cheaper prices for motherboards, but could also easy the broad support of features like ECC.
Asus Prime X370-PRO specs suggest AMD Ryzen processors may support ECC memory
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Re: Asus Prime X370-PRO specs suggest AMD Ryzen processors may support ECC memory
#42Who needs a Xeon now? The only chink in the armour here is the 64GB max, which admittedly is bad for the science/Machine learning folks, but the vast majority of these chips is used for databases, web serving, app serving, etc, for which these ECC-enabled Ryzens are a game changer on price. Cluster them up on premises or in cloud, and you're looking at a total winner, especially that the 16GB dimms are still much che…
ECC support in CPU is just a half of success. Now somebody have to convince motherboard manufacturers to enable it. It was the same thing with previous AMD CPUs. They all had ECC support but there was virtually no motherboards that would support it.
Yes, I still remember what a PITA it was to identify a motherboard that both supported ECC and allowed enabling it in the BIOS for my last AMD build (circa 2007). I still remember reading about boards that offered "ECC support", but had no way to enable it in the BIOS, change the scrubbing time, etc. And how relieved I was that whatever I wound up with did indeed have full ECC support.
Then again, buying Xeon boards with ECC support for desktop use has been "fun" as well, but for the opposite reason. I actually had to go with a USB sound card when I built my wife's e3 xeon setup.
Re: Asus Prime X370-PRO specs suggest AMD Ryzen processors may support ECC memory
#43Not much of a surprise coming from AMD, but it will most likely end up like their previous generations of CPU: most motherboards won't support ECC memory, forcing you to buy specialized hardware anyway. And if you're buying specialized hardware, you might as well go all the way.
>forcing you to buy specialized hardware anyway.
The link is literally a MBO claiming support for ECC and from what I can tell it will be ~170$ - which is not really unreasonable.
Re: Asus Prime X370-PRO specs suggest AMD Ryzen processors may support ECC memory
#44Can someone tell me how many errors over the past 10 years or so would have been fixed by ECC memory. I've no idea at all how much better it would be and what the current error rate it prevents is? It sounds more nice to have than vital? Is there a performance cost to it at all?
Arstechnica writeup of a Google study:
https://arstechnica.com/business/2009/10/dram-study-turns-as...
Re: Asus Prime X370-PRO specs suggest AMD Ryzen processors may support ECC memory
#45Re: Asus Prime X370-PRO specs suggest AMD Ryzen processors may support ECC memory
#46Can someone tell me how many errors over the past 10 years or so would have been fixed by ECC memory. I've no idea at all how much better it would be and what the current error rate it prevents is? It sounds more nice to have than vital? Is there a performance cost to it at all?
Would prevent Rowhammer attacks.
DDR4 is innately much more resilient to rowhammer than previous standards.
Re: Asus Prime X370-PRO specs suggest AMD Ryzen processors may support ECC memory
#47This maybe true for later models but not initial offers. If you look a the Linux 4.10 change log [1] you will see that while zen supports ECC, it ignores the error correction message. So you can use ECC ram, but you get none of the benefit of ECC ram [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux....
Are warning messages like these common in the Linux kernel? Cursory overview makes it seem like the logic should never get there. Funny.
> WARN(1, "Something is rotten in the state of Denmark.\n");
Re: Asus Prime X370-PRO specs suggest AMD Ryzen processors may support ECC memory
#48Earlier quoted context omitted.
Enterprises are also professional cost cutters, so if AMD can provide enterprise-class features for less, then they will find a market.
That's demonstrably not true, AMD has supported ECC more or less across the board since the Athlon64. Enterprises may be professional cost cutters, but before that they're professional ass coverers, otherwise Oracle would have died 20 years ago.
AMD does not support ECC on consumer platforms after AM3+.
Socket FM1 through FM2+ are all incapable of supporting ECC.
For socket AM1 there are reports that it may be ECC capable, however no actual products exist that implement this support.
Re: Asus Prime X370-PRO specs suggest AMD Ryzen processors may support ECC memory
#49Earlier quoted context omitted.
Would prevent Rowhammer attacks.
DDR4 is innately much more resilient to rowhammer than previous standards.
More resilient maybe, but not Rowhammer-proof:
https://arstechnica.com/security/2016/03/once-thought-safe-d...
Re: Asus Prime X370-PRO specs suggest AMD Ryzen processors may support ECC memory
#50Hype headline, change it. AMD has almost always had ECC support in their desktop processors as long as I've used them. The motherboard makers are to blame for not implementing it.