Rumors have a 5090 with GDDR7 and a 384-bit bus. Micron has GDDR7 modules on their roadmap as 2GB and 3GB. This means that the memory configurations for 2GB modules will be 24 or 48GB, and with 3GB modules it will be 36GB or 72GB.
32GB would imply it’s a 256 or 512-bit bus, neither of which are very likely for a xx90. I could see them maybe going as low as a 320-bit bus for 30GB. Even 33GB with a 352-bit bus is more likely.
The 5080 will be another thing, 24GB would imply a 256-bit bus with 3GB modules. Nvidia has been all over the map with the xx80 memory width, so it will be anyone’s guess. If they prioritize memory bandwidth and use a 320-bit bus, a 20GB card is most likely.
A 20GB 5080, probably at an even higher MSRP than the 4080 due to a lack of competition, would be criminal… There was supposed to be a 20GB 3080 for crying out loud. And games will def go over 16GB before next next gen so 4080 owners will face a VRAM bottleneck and then their upgrade option is a $1500 5080 omg.
I heard the 512-bit rumor and thought Nvidia was FINALLY fixing their VRAM issue across their entire product stack… Sigh.
Rumors have a 5090 with GDDR7 and a 384-bit bus. Micron has GDDR7 modules on their roadmap as 2GB and 3GB. This means that the memory configurations for 2GB modules will be 24 or 48GB, and with 3GB modules it will be 36GB or 72GB.
32GB would imply it’s a 256 or 512-bit bus, neither of which are very likely for a xx90. I could see them maybe going as low as a 320-bit bus for 30GB. Even 33GB with a 352-bit bus is more likely.
The 5080 will be another thing, 24GB would imply a 256-bit bus with 3GB modules. Nvidia has been all over the map with the xx80 memory width, so it will be anyone’s guess. If they prioritize memory bandwidth and use a 320-bit bus, a 20GB card is most likely.
GDDR prevents having arbitrary memory sizes.
A 20GB 5080, probably at an even higher MSRP than the 4080 due to a lack of competition, would be criminal… There was supposed to be a 20GB 3080 for crying out loud. And games will def go over 16GB before next next gen so 4080 owners will face a VRAM bottleneck and then their upgrade option is a $1500 5080 omg.
I heard the 512-bit rumor and thought Nvidia was FINALLY fixing their VRAM issue across their entire product stack… Sigh.