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[PCG/Hexus] DDR5 memory is twice as fast as DDR4 and slated for 2019 - Page 10

post #91 of 155
Quote:
Originally Posted by TheBloodEagle View Post

Yep, and in the server world, the JEDEC standard is now up to 3200MHz with ECC...yet...no kit even exists that I'm aware of. The fastest I can find is from Crucial at 2666MHz. So they all want to move onto DDR5 already with some paltry MHz bump YET haven't even bothered to make the most out of DDR4 yet. This is just driven by enterprise datacenters wanting more capacity per DIMMs. Real performance gains, significant improvements, etc...meh, consumers and enthusiasts will just get dragged along with some trickle down basic minor additions for extra $$$$. Marketing teams will make it seem so much better but it's not.

And it will probably even somehow have the same 400MHz clock rate we have been stuck at for 15 years. They really do need to bump up to 1GHz data rate and move to QDR IO clock. It cant be that hard considering GDDR5 has been at QDR for years and electronics have long broken past the 1GHz barrier for all sorts of heavy processing and transistor switching
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post #92 of 155
Quote:
Originally Posted by EniGma1987 View Post

And it will probably even somehow have the same 400MHz clock rate we have been stuck at for 15 years. They really do need to bump up to 1GHz data rate and move to QDR IO clock. It cant be that hard considering GDDR5 has been at QDR for years and electronics have long broken past the 1GHz barrier for all sorts of heavy processing and transistor switching

Imagine the power draw then. There's more silicon on 4 single sided sticks of memory (32 chips) than there is on CPUs, probably more than EPYC (going by some mental images). The current draw would probably sky rocket.
post #93 of 155
Quote:
Originally Posted by TheBloodEagle View Post

Yep, and in the server world, the JEDEC standard is now up to 3200MHz with ECC...yet...no kit even exists that I'm aware of. The fastest I can find is from Crucial at 2666MHz. So they all want to move onto DDR5 already with some paltry MHz bump YET haven't even bothered to make the most out of DDR4 yet. This is just driven by enterprise datacenters wanting more capacity per DIMMs. Real performance gains, significant improvements, etc...meh, consumers and enthusiasts will just get dragged along with some trickle down basic minor additions for extra $$$$. Marketing teams will make it seem so much better but it's not.

Yeah its kinda ridiculous. AMD didn't even release a chip with a DDR4 controller until this year.
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post #94 of 155
Quote:
Originally Posted by Megaman_90 View Post

Yeah its kinda ridiculous. AMD didn't even release a chip with a DDR4 controller until last year.

FTFY. Whether you think Bristol Ridge going to individual retail package only recently means it hasn't existed is patently false.

The 7th Gen Bristol Ridge APUs were released last September, as in 2016. It was OEM only, which they failed to mention at the time of launch, built around early B350s, and all the OEM machines were cheap pieces of garbage.

Nobody bought them.
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post #95 of 155
Quote:
Originally Posted by mmonnin View Post

Imagine the power draw then. There's more silicon on 4 single sided sticks of memory (32 chips) than there is on CPUs, probably more than EPYC (going by some mental images). The current draw would probably sky rocket.

Current DDR4 power draw is about 3-5W per stick depending on speed grade and density. At worst you would triple the power draw, and people wouldnt be required to use the top speed grade with the 1GHz data clock. Servers could use lower end if they dont need the bandwidth, and could take the higher power draw if they do need the bandwidth. Gamers wouldnt care about 15W sticks instead of 5W sticks.
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post #96 of 155
Quote:
Originally Posted by EniGma1987 View Post

And it will probably even somehow have the same 400MHz clock rate we have been stuck at for 15 years. They really do need to bump up to 1GHz data rate and move to QDR IO clock. It cant be that hard considering GDDR5 has been at QDR for years and electronics have long broken past the 1GHz barrier for all sorts of heavy processing and transistor switching

QDR adds a lot of latency, apparently, this isn't a big deal with GPUs which are usually accessing large data sets but CPUs lose a lot of performance due to a cache miss with high memory latency.

1GHz would be great but running several low latency 1GHz memory buses through the motherboard is expensive. We need memory on package to get that fast while being reliably and affordable. Transistor switching speed is not the issue.
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post #97 of 155
Or Micron could release there xpoint brand of dimms already.
post #98 of 155
Quote:
Originally Posted by Asmodian View Post

QDR adds a lot of latency, apparently, this isn't a big deal with GPUs which are usually accessing large data sets but CPUs lose a lot of performance due to a cache miss with high memory latency.

1GHz would be great but running several low latency 1GHz memory buses through the motherboard is expensive. We need memory on package to get that fast while being reliably and affordable. Transistor switching speed is not the issue.

I'm curious if it would with DIMM slots though since the electrical/signal path ways are different. I would've expected latency to be halved. Plus, there's much more I/O possible in total; not just bandwidth. Which is why I bring it up.






Quote:
Originally Posted by Shadowarez View Post

Or Micron could release there xpoint brand of dimms already.

I'm a big fan of Optane/Xpoint but even as a DIMM it's still not faster than DDR SDRAM of course. It solves a different issue. We're still going to be stuck with DDR5 minor improvements for $$$$ when we could gain much more in a different direction.
Edited by TheBloodEagle - 9/27/17 at 4:02am
post #99 of 155
well we all know this density inscrease is Pure BS itll be another ghz Race not likely to see any increase in size. unless they managed to finally invent higher densitys that are $$$$$$$$$$$$$$ more then regular sizes, i wants Microns Quantex far better then 32-64 gb of dimms.
post #100 of 155
Quote:
Originally Posted by czin125 View Post

You can upgrade to 2133.
49fps vs 62fps ( Up to 26% higher IPC )

https://www.youtube.com/watch?v=i1qYT27nJcc#t=4m56s
or loosen the timings abit and go 1600mhz
1600 is the sweetspot imo
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