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DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

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Re: DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

#81

Post by lucisferre »

ksec wrote: post #71

The unanswered question is, will it be cheaper? Price / GB of DRAM hasn't actually fallen much in the 10 years of progression.[1] LPDDR is still over $3/GB. UDIMM is still ~$3 /GB, which is about the same in 2010 / 2011. i.e Despite what you may heard about DRAM price collapse in 2019, the price floor of DRAM has been pretty much the same over the past 10 years. Every other silicon has gotten cheaper, NAND, ICs, just…

Not sure if those values are inflation adjusted. If not then that floor still represents a 13% drop in price.

Re: DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

#82

Post by zmj »

ksec wrote: post #71

The unanswered question is, will it be cheaper? Price / GB of DRAM hasn't actually fallen much in the 10 years of progression.[1] LPDDR is still over $3/GB. UDIMM is still ~$3 /GB, which is about the same in 2010 / 2011. i.e Despite what you may heard about DRAM price collapse in 2019, the price floor of DRAM has been pretty much the same over the past 10 years. Every other silicon has gotten cheaper, NAND, ICs, just…

Why would you expect better performance at a lower price?

Re: DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

#83

Post by varispeed »

zmj wrote: post #82
ksec wrote: post #71

The unanswered question is, will it be cheaper? Price / GB of DRAM hasn't actually fallen much in the 10 years of progression.[1] LPDDR is still over $3/GB. UDIMM is still ~$3 /GB, which is about the same in 2010 / 2011. i.e Despite what you may heard about DRAM price collapse in 2019, the price floor of DRAM has been pretty much the same over the past 10 years. Every other silicon has gotten cheaper, NAND, ICs, just…

Why would you expect better performance at a lower price?

It is easy. For example you could hire 10000 people to perform calculations for your complex mathematical model (like it was done century ago) or you can buy Raspberry PI to perform the same task in no time. Which will be cheaper?

Re: DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

#84

Post by varispeed »

toast0 wrote: post #64
Zenst wrote: post #35

I like what IBM has done with their latest power chip - effectually made the whole memory interface upgradable. https://www.nextplatform.com/2020/09/03/the-memory-area-netw... "the shift from dedicated DDR4 memory controllers to Serdes-based, high speed differential signaling mixed with buffer chips on memory modules that can be taught to speak DDR4, DDR5, GDDR6, 3D XPoint, or whatever, is an important shift in syste…

I think this makes sense for IBM, but probably not for AMD and Intel. AMD and Intel are putting out new chips every year (even if they're just Skylake refreshes), so it's not too big of a deal to change the memory interface, and they are capable of putting in two flavors of DDR support when some flexibility is needed. For IBM, I don't think they release incremental chip designs each year, so it makes more sense for t…

It is pretty much the current greed driven technology. Company doesn't want to invest in proper FPGA technology that will allow reconfiguration of chipsets on the fly, but instead they want people to buy new chipsets every year or so and preferably make the old ones obsolete (not resellable)

Re: DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

#85

Post by klodolph »

zmj wrote: post #82
ksec wrote: post #71

The unanswered question is, will it be cheaper? Price / GB of DRAM hasn't actually fallen much in the 10 years of progression.[1] LPDDR is still over $3/GB. UDIMM is still ~$3 /GB, which is about the same in 2010 / 2011. i.e Despite what you may heard about DRAM price collapse in 2019, the price floor of DRAM has been pretty much the same over the past 10 years. Every other silicon has gotten cheaper, NAND, ICs, just…

Why would you expect better performance at a lower price?

Because the manufacturing techniques have improved? You can see the effects of better manufacturing techniques in other parts.

Re: DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

#86

Post by uzakov »

retSava wrote: post #45
pjc50 wrote: post #20

Earlier quoted context omitted.

That reminds me, I was going to buy a PS4.

You may know this already, but if not - if you have others to share the console with (eg kids, partner), I think it'll be worth going for the '5 just from that perspective. Switching between games is a non-trivial (yeah yeah mock me, 1st world problems) thing on the ps4 in that the active game must be quit first, then the new loaded. You may not be on a suitable spot to quit either, far from save point. On ps5 (or xs…

Or buy the new Xbox, since the price and what you get(hundreds of games and the console) is amazing

Re: DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

#87

Post by klodolph »

DCKing wrote: post #76

One thing I'd like to understand better about DDR5 is how well the built-in ECC is going to work to improve reliability. DDR5 comes with "chip level ECC" [1] of which the main purpose is to be able to better sell highly complicated memory chips with minor defects. But as a consequence as I understand, it will allow for the correction of single bit memory flips. With regular DDR4 or previous generations, you don't get…

I wouldn’t be surprised if at some level that physics has forced the manufacturer’s hand—that previously low error rates are now unacceptable when you multiply them by 64GB.

Re: DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

#88

Post by kasabali »

DCKing wrote: post #76

One thing I'd like to understand better about DDR5 is how well the built-in ECC is going to work to improve reliability. DDR5 comes with "chip level ECC" [1] of which the main purpose is to be able to better sell highly complicated memory chips with minor defects. But as a consequence as I understand, it will allow for the correction of single bit memory flips. With regular DDR4 or previous generations, you don't get…

What I read around is that's not the enterprise ECC, it's more akin to ECC bits used in flash memory. It'll allow manufacturers to play fast and loose with memory.

Re: DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

#89

Post by mc32 »

kasabali wrote: post #88
DCKing wrote: post #76

One thing I'd like to understand better about DDR5 is how well the built-in ECC is going to work to improve reliability. DDR5 comes with "chip level ECC" [1] of which the main purpose is to be able to better sell highly complicated memory chips with minor defects. But as a consequence as I understand, it will allow for the correction of single bit memory flips. With regular DDR4 or previous generations, you don't get…

What I read around is that's not the enterprise ECC, it's more akin to ECC bits used in flash memory. It'll allow manufacturers to play fast and loose with memory.

So in other words, error prone memory modules don’t have to be tossed and can be sold because they will be self correcting...?

Re: DDR5 Is Coming: First 64GB DDR5-4800 Modules from SK Hynix

#90

Post by TheFlash »

dmead wrote: post #39
speeder wrote: post #8

Earlier quoted context omitted.

I have a 4690K and my RAM is a 32GB EVGA DDR3 ram that I suspect was made by hynix or the other manufacturer of fast rams, that runs at speed up to par with the slowest DDR4 but with DDR3 latency, it is very awesome. I wonder if DDR5 will be fast enough to compensate for the slower latency (or maybe they improved latency this time?) To be honest I didn't felt yet any need to move off my current machine, I would only…

Its 2020 and you're still on a crt?

Eurogamer did write a review about playing modern games on a (very good) CRT monitor [1]. It's better than any LCD and even OLED monitors according to them:

[1] https://www.eurogamer.net/articles/digitalfoundry-2019-moder...

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