We shared some news back in May through Moore’s Law Is Dead, suggesting that Nvidia might equip the RTX 5080 and RTX 5070 laptop versions with more memory than the RTX 40 series. Rumors indicated that the RTX 5080 laptop could feature 16 GB of VRAM, while the RTX 5070 laptop was expected to have 12 GB.
Updated VRAM Information
MLID has reinforced his previous leak about the RTX 5080 laptop's VRAM and has disclosed potential CUDA core counts for the anticipated GB203 GPU that is set to drive the device. The RTX 5080 laptop is said to use a GB203 GPU, which also powers the RTX 5090 laptop and the RTX 5080 desktop variants. It’s likely that the laptop’s GB203 will be a less powerful version, featuring fewer CUDA cores compared to the desktop variant. MLID suggests a possible configuration for the RTX 5080 laptop could include 8,192 CUDA cores along with 16 GB of GDDR7 memory. This marks a notable decrease in the number of cores available on the GB203.
Comparison with Desktop Variants
Earlier leaks have indicated that the desktop RTX 5080, using the GB203-400-A1, consists of a total of 10,752 CUDA cores and has 16 GB of memory operating at 28 Gbps over a 256-bit bus. This means the RTX 5080 laptop is experiencing a significant drop of 24% in the CUDA core count.
Despite this substantial reduction in specs, MLID has put forward some ambitious predictions regarding the performance of the RTX 5080 laptop. He estimates that, with 16 GB of 28 Gbps VRAM and the corresponding bandwidth, the RTX 5080 laptop may be 45 to 65% faster than the RTX 4080 laptop. This advantage could enable the mobile GPU to compete with the desktop RTX 4070 Ti Super and even the RTX 4080 (available on Amazon).
Performance Predictions and Future Outlook
However, it’s important to note that these performance estimates are merely the result of the leaker’s “napkin math.” Therefore, they should be viewed as educated guesses rather than confirmed leaks.
All in all, the RTX 5080 laptop appears to be shaping up as a powerful 1440p/4K gaming machine, representing a substantial upgrade over the RTX 4080 laptop GPU. Hopefully, we’ll get a glimpse of this powerful board at CES 2025.
Moore's Law Is Dead, Teaser image: Gigabyte, Sean Sinclair on Unsplash, edited.
