Back when Surface Book 2-in-1 was launched, Microsoft was quite unclear about the optional Nvidia Geforce GPU but some of the first GPU-Z screenshots reveal that it is a custom Geforce GPU comparable to Geforce 940M.
According to first GPU-Z screenshots posted at Reddit, it appears that Microsoft Surface Book will feature a custom GPU similar to the Geforce 940M GPU and packs 384 CUDA cores, 32 TMUs and 16 ROPs. The GPU is clocked at 954MHz with 993MHz GPU Boost clock.
Unlike the Geforce 940M, the Surface Book GPU comes with 1GB of GDDR5 memory, rather than DDR3 memory, paired up with a 64-bit memory interface, which adds up to memory bandwidth of 40.08GB/s.
In case you missed it earlier, the Microsoft Surface Book is a 13.5-inch 3000x2000 resolution 2-in-1 notebook with Intel's 6th generation Core i5 or Core i7 CPU, featuring up to 16GB of RAM and 1TB of SSD storage.
The Microsoft Surface Book starts at US $1,499 and can climb up to US $2700 with Core i7 CPU, Geforce GPU, 16GB of RAM and 512GB of PCIe 3.0 SSD storage.
Source:
Hexus.net.