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Micron unveils specifications of GDDR5X chips

Micron unveils specifications of GDDR5X chips

Micron unveils specifications of GDDR5X chips

Micron unveils specifications of GDDR5X chips

 

Micron has unveiled the specifications of their GDDR5X, giving us a glimpse of what to expect from the new memory standard on future GPUs. 

These new GDDR5X memory chips are currently being sampled to customers, with mass production starting this summer. Right now the first GDDR5X feature 8Gb (1GB) capacities and rated speeds of 10Gb/s. 11Gb/s and 12Gb/s. These new chips sport a 32-bit memory interface and are manufactured on the 20nm process.  

One thing that GDDR5X also offers is more flexible capacity options, with the standard supporting 4Gb, 6Gb, 8Gb, 12Gb and 16Gb capacities, with a potential data rates that can surpass 14Gb/s per pin. Right now Micron is being conservative and is only offering GDDR5X with lower data rates, but these are still significantly higher than existing GDDR5 memory chips which only typically run at between 5-8Gb/s depending on which chips you use. 

Power consumption is also a major concern that GDDR5X addresses, offering large increases in bandwidth with similar power consumption to GDDR5, allowing manufacturers to get more memory performance per watt of power. 

Below are some calculations are have been made by Anandtech, showcasing the potential improvements that using GDDR5X can make compared to GDDR5 with various memory bus sizes. Several modern GPUs are also on the graph with the same calculations, showing that GDDR5X has the potential to deliver more performance and capacity than the GDDR5 based solutions used in the R9 290X and GTX 980Ti while at the same time consuming less power and requiring a smaller GPU memory bus size. 

 Micron unveils specifications of GDDR5X chips

 

What GDDR5X offers is huge performance gains while keeping power consumption low, which is something that interests GPU manufacturers greatly. The only problem is that at the moment GPU performance is not only limited by bandwidth, and solutions like AMD's delta colour compression and similar solutions from Nvidia also serve to make modern GPUs make much more efficient use of the memory bandwidth that current standards offer. 

When comparing the R9 Fury X and the GTX 980Ti on paper the R9 Fury X should wipe the floor with it if you look at the memory bandwidth alone, this does not result in better game performance from the Fury X in a lot of cases. GPU manufacturers need to increase the performance of their GPU cores and more gamers will need to start using high resolution displays before memory bandwidth will become a limiting factor for gamers though these performance increases are still welcome.   

 

You can join the discussion on Micron's GDDR5X memory specifications on the OC3D Forums.   

 

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Most Recent Comments

30-03-2016, 09:08:58

Dicehunter
Very nice, Could probably push the bandwidth up over 400GB/s with a decent overclock on the 384GB/s version.Quote

30-03-2016, 09:31:41

Legacy-ZA
Quote:
Originally Posted by Dicehunter View Post
Very nice, Could probably push the bandwidth up over 400GB/s with a decent overclock on the 384GB/s version.
From what I see, for now at least; is that there is only going to be 256-bit and 128-bit GDDR5X.Quote

30-03-2016, 09:36:49

Dicehunter
Quote:
Originally Posted by Legacy-ZA View Post
From what I see, for now at least; is that there is only going to be 256-bit and 128-bit GDDR5X.
Yep but the 384GB/s memory on the 256 bit bus could probably be pushed over 400GB/s with a decent overclock, Hell the 980 Ti's memory bandwidth can be pushed from 336GB/s to 384GB/s i.e 7GHz-->8GHz.Quote

30-03-2016, 10:33:06

Legacy-ZA
Quote:
Originally Posted by Dicehunter View Post
Yep but the 384GB/s memory on the 256 bit bus could probably be pushed over 400GB/s with a decent overclock, Hell the 980 Ti's memory bandwidth can be pushed from 336GB/s to 384GB/s i.e 7GHz-->8GHz.
I read your original post incorrectly, apologies. I see what you mean.

*Edit*

To clarify; in my mind I read 384-bit and not 384GB/s Quote

30-03-2016, 13:43:32

NeverBackDown
Doesn't really have a future though. At least for AMD. Considering they are using HBM2 for Vega and 5X won't be available until launch or after launch of new GPUs. Nvidia would probably follow the same route too.Quote
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