NVIDIA’s next-generation graphics cards, Blackwell, are expected to arrive by the end of the year, or even in early 2025. While we’ve already covered the subject, we’re back with new info on the potential memory configurations of these RTX 50s. Significant gains are to be expected!
RTX 50: no bus change, but higher bandwidth thanks to GDD7!
If @kopite7kimi, a reliable source of information in the industry, is to be believed, NVIDIA will not be changing the memory configurations of its graphics cards. Unfortunately, the spearhead of the range, the GB202, a chip equipping the potential future RTX 5090, would still feature a 384-bit bus. Coupled with GDDR7, according to recent information, we’d have a card with 24 GB of VRAM. However, the 32 Gbps of memory would increase bandwidth. We’d go from 1,008 GB/s for the 4090 to 1,536 GB/s for this RTX 5090.
Concerning the other chips :
| GB2023 (RTX 5080) | 256-bit | 16 GB | 1024 GB/s vs. 716.8 GB/s |
| GB204 (RTX 5070) | 192-bit | 12 GB | 768 GB/s vs. 504.2 GB/s |
| GB206 (RTX 5060 Ti) | 128-bit | 8 GB | 512 GB/s vs 288 GB/s |
| GB207 (RTX 5060) | 128-bit | 8 GB | 512 GB/s vs 272 GB/s |
In practice, we don’t expect greater bus width or more VRAM, which is sorely lacking on the RTX 4060 (Ti). These cards can fall victim to stuttering on certain games due to saturated memory. However, with GDDR7, we find greatly improved throughputs thanks to their greater speed, provided that greens exploit the fastest VRAM, which may not be the case. As a reminder, memory chips are expected to reach 32 Gbps, compared with 20 Gbps for the current GDDR6.
In short, we’ll keep you posted, as it’s still hard to know if all this is true. So take this with a pinch of salt!
