Comments by "IIIRattleHeadIII" (@badass6300) on "NVIDIA 4060Ti Details... NVIDIA finally listening to consumers?" video.
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@commanderoof4578 I was talking about GDDR6, I don't know the prices of GDDR6X, those aren't publicly available. Fast GDDR6 came out this year, 21Gbps and 24Gbps to be exact.
Also to elaborate on the bus width. Each GDDR6(X) chip runs either at 32 bit width or 16 bit width, that means that each chip takes 32 bits of the memory bus, thus to run at full bandwidth a 128 bit card can have 4x GDDR6(X) chips running at 32 bit width, until a couple of months ago, the highest capacity GDDR6(X) chip was 2GB, that means that until recently a 128 bit card could NOT have more than 8GB of VRAM at full bandwidth.
If you for example put more than 4x chips on a 128 bit card, for example 8, that means that each of the chips will have to run at 16 bit mode, which would cut bandwidth in half, just like the RTX A4000 ADA which has 20GB of RAM on a 160 bit bus with 10x 2GB Chips, instead of 5x 2GB chips and has half the bandwidth of a 4070.
By JEDEC standards there should be 1.5GB and 3GB GDDR6 chips as well, but it seems that they have skipped them. 3GB is a missed opportunity as the jump from 8GB to 16GB is extreme and the cards don't have enough bandwidth to utilize it effectively, while 12GB would have been much better overall for 1440p gaming. 1080p is still fine with even 6GB of VRAM, so 8GB is perfect for 1080p in the next few years.
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