We reported in October that the GeForce RTX 5090 laptop GPU, the flagship mobile card in Nvidia’s RTX 50 Blackwell line, will have 24GB of VRAM. We also reported at the time that the 24 GB of VRAM on a 256-bit bus required 3 GB GDDR7 modules. Thanks to Chinese leaker Golden Pig Upgrade, we now have confirmation that Nvidia is indeed equipping the RTX laptop 5090 with 24 GB VRAM.
RTX 5090 Laptop GPU VRAM Capacity
According to Golden Pig Upgrade, the RTX 5090 laptop will be the first RTX 50 GPU to use the 3GB GDDR7 modules. This will allow the GPU to have a total of 24GB of VRAM on a 256-bit bus. Interestingly, the RTX 5090 laptop will be the only RTX 50 mobile GPU to use 3GB GDDR7 modules Mobile RTX 50 to use these 3GB modules and less powerful cards like the RTX 5080 laptop will follow suit. will stick to conventional memory configurations. The RTX 5080 laptop, for example, is said to have a 16GB buffer.
Golden Pig Upgrade claims that gaming laptops based on the RTX 5090/RTX 5080 will launch in February. The machines featuring the RTX 5070 and the mobile RTX 5060 will be released a month later, at the end of March 2025. This is quite expected since CES is usually the time when OEMs unveil their next-generation gaming laptops .
RTX 5090 Laptop GPU Specs and Performance
When the RTX 5090 laptop GPU is released, the card could rely on the GB203 Blackwell GPU, the same chip as the rTX 5080 with a total of 10,752 CUDA cores, a 256-bit wide bus, and a total TGP of 175W For reference, the portable RTX 4090 uses 9,728 CUDA cores, a bus of 256. bits and a maximum TGP of 150 W. Although the difference between CUDA cores is not very significant (10.5%), architectural improvements and increased power consumption should allow the RTX laptop 5090 to offer a noticeable performance improvement.
So, what kind of performance can we expect from the RTX 5090 laptop GPU?
Going by the RTX 4090 laptop card, we can expect the RTX 5090 laptop to be comparable to the mid-range RTX 5070 desktop GPU, since the mobile RTX 4090 offers performance similar to those of the RTX 4070 Super. Of course, this is a crude estimate of performance. The RTX 5090 laptop can therefore be significantly faster.
