Rumors suggest that Nvidia will launch the RTX 5080 with 30 Gbps GDDR7 memory, while the remaining Blackwell lineup will stick with slower 28 Gbps modules, via Benchlife as spotted by Harukaze on X. Do note that this also includes the flagship RTX 5090. Still, given the substantial disparities in CUDA core count and other specifications between the RTX 5090 and RTX 5080, a small memory nerf is unlikely to make a difference to the flagship.
Nvidia's RTX 50 series is expected to be the first GPU lineup to debut with GDDR7 memory. GDDR7 touts several advantages over its predecessor such as higher speeds and greater density. Upcoming GDDR7 offerings from Samsung promise speeds of up to 42.5 Gbps in 24Gb (3GB per module) capacities. Mainstream and budget GPUs suffer from narrow bus widths that limit VRAM capacities to a paltry 8GB or 12GB (128-bit/192-bit) using 16Gb modules. While newer 24Gb modules can theoretically improve these numbers up to 12GB and 18GB respectively, don't expect availability until 2025 or later, likely in the form of a SUPER refresh.
