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AMD Working on GDDR6 DRAM Controller
It is always funny to see what people always note down on their linked in pages. This time it is a principal member of AMD's technical team, Daehyun Jun. His entry states he is/ was working on a DRAM controller for GDDR6 memory.
Currently, the linked-in page has been edited, and now just mentions "DRAM controller". It's all simply, HBM in any form and format is still expensive and difficult to use. If anything, the vega launch has shown exactly that. So it makes all the sense in the world for AMD to pursue a cheaper technology, and with GDDR6 being very promising, they started designing a new controller for their GPUs.
GDDR6 has the potential for double the bandwidth over current gen 8Gbps memory as used on say a GeForce GTX 1070 Ti. It's good news as we know it's coming likely on the next wave of graphics cards, also it uses less voltage and can theoretically double the bandwidth over current gen GDDR5 memory. To compare a little, current GDDR5 memory on say a Radeon RX 480 / GeForce GTX 1070 is roughly 7 or 8 Gbps, and GDDR5X on a GTX 1080 can do 10 or 11 Gbps.
GDDR6, when released, will start right where GDDR5X will end, at roughly 14 to maximum 16 Gbps. his means more bandwidth (up-to double over current bandwidth) and higher clock frequency memory. Voltages wise GDDR6 will be rated at 1.35v, which is exactly the same as GDDR5x. Other companies like SK Hynix and Micron are on track with GDDR6 as well.
GDDR6 will probably be available from early 2018.
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warlord
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#5498152 Posted on: 12/05/2017 12:35 PM
Ram is important, but we need proper gpu juice to cope with. Resolution up to 8k is already smooth with that kind of bandwidth. I can't say the same about raw power of processing unit.
Some times progression of technology is not equal to all aspects.
Ram is important, but we need proper gpu juice to cope with. Resolution up to 8k is already smooth with that kind of bandwidth. I can't say the same about raw power of processing unit.
Some times progression of technology is not equal to all aspects.
Denial
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#5498172 Posted on: 12/05/2017 01:41 PM
I wrote this in the other GDDR6 thread - faster RAM can lead to faster GPU indirectly. Previously an AMD card may have required a 256bit bus to hit x bandwidth, but with GDDR6 they may only need 128bit bus to hit that same x. This leads to reduced power consumption, which then can be used for faster clocks and it reduces the die size taken up by the memory controller - which potentially means you can stuff more cores in the same size chip.
Ram is important, but we need proper gpu juice to cope with. Resolution up to 8k is already smooth with that kind of bandwidth. I can't say the same about raw power of processing unit. Some times progression of technology is not equal to all aspects.
Some times progression of technology is not equal to all aspects.I wrote this in the other GDDR6 thread - faster RAM can lead to faster GPU indirectly. Previously an AMD card may have required a 256bit bus to hit x bandwidth, but with GDDR6 they may only need 128bit bus to hit that same x. This leads to reduced power consumption, which then can be used for faster clocks and it reduces the die size taken up by the memory controller - which potentially means you can stuff more cores in the same size chip.
warlord
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Posts: 2761
Joined: 2012-10-22
#5498188 Posted on: 12/05/2017 02:45 PM
I agree technically with how you place it, but think it as that mate:
We have a motorway or a big wide road -> translates into bus depth (bits)
The quality of this road, surface, asphalt, safety precautions etc -> translates into bandwidth and ram generation
But in the end of the day, the most game changing factor is the kind of car, the year of it (model) and most of all its horsepower and/or capabilities. (GPU core for this subject)
All in all, I believe we firstly should have the demand for a GPU core that surely needs that kind of support, rather than paying for dram manufacturers innovation and their new products for testing. The whole GPU's hardware should be scaling equally as the years passing by.
I wrote this in the other GDDR6 thread - faster RAM can lead to faster GPU indirectly. Previously an AMD card may have required a 256bit bus to hit x bandwidth, but with GDDR6 they may only need 128bit bus to hit that same x. This leads to reduced power consumption, which then can be used for faster clocks and it reduces the die size taken up by the memory controller - which potentially means you can stuff more cores in the same size chip.
I agree technically with how you place it, but think it as that mate:
We have a motorway or a big wide road -> translates into bus depth (bits)
The quality of this road, surface, asphalt, safety precautions etc -> translates into bandwidth and ram generation
But in the end of the day, the most game changing factor is the kind of car, the year of it (model) and most of all its horsepower and/or capabilities. (GPU core for this subject)
All in all, I believe we firstly should have the demand for a GPU core that surely needs that kind of support, rather than paying for dram manufacturers innovation and their new products for testing. The whole GPU's hardware should be scaling equally as the years passing by.
Silva
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#5498190 Posted on: 12/05/2017 02:49 PM
Plus: smaller bus equals to cheaper cards.
I wrote this in the other GDDR6 thread - faster RAM can lead to faster GPU indirectly. Previously an AMD card may have required a 256bit bus to hit x bandwidth, but with GDDR6 they may only need 128bit bus to hit that same x. This leads to reduced power consumption, which then can be used for faster clocks and it reduces the die size taken up by the memory controller - which potentially means you can stuff more cores in the same size chip.
Plus: smaller bus equals to cheaper cards.
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