Microsoft's Surface Book notebook starts at US$ 65,438+US$ 0,899, and adopts a stand-alone model, but Microsoft official website has always refused to disclose the specific specifications of the GPU. Previously, it was only said that it was a customized NVIDIA Maxwell stand-alone model, and it was also said that the Xbox One team participated in the customization, equipped with 1gb memory, and its performance reached the GTX 950M level, which sounded very good. After all, 1.899 dollars is not cheap for American imperialists.
But the truth may disappoint you. The Surface Book notebook has been on sale, and some users have already got it. Someone posted the detailed parameters on the NVIDIA control panel on Reddit. The results are as follows:
Operating system: Windows 10 Pro, 64-bit.
DirectX version: 12.0
GPU processor: GeForce GPU
Driver version: 354. 15
Direct3D API version: 12
Direct3D function level: 1 1_0
CUDA core number: 384
Core clock: 954 MHz
Memory data rate: 50 10 MHz.
Memory interface: 64 bits
Memory bandwidth: 40.08 GB/ s
Total available graphics memory: 508 1 MB
Special memory: 1024 MB GDDR5
System video memory: 0 MB
Shared system memory: 4057 MB
Video BIOS version: 82.08.4D.00.0 1
IRQ: Not used
Bus: PCI Express x4 Gen3
Equipment number:10de134b00081414.
Part number: 2702 000 1
Other parameters are not very important, as long as we know that its CUDA core number is 384, its frequency is 854MHz, its memory bit width is 64bit, and its capacity is 1GB GDDR5. But it also means that the unique display screen of Surface Book notebook can't be a customized version of GTX 950M at all, because it is actually just a GeForce 940M.
How big is the difference? GTX 950M is 640 CUDA cores with a bit width of 128bit, which is actually the same level as GTX 750 Ti of the desktop version, while GeForce 940M is 384 CUDA cores with a bit width of 64bit, which is actually equivalent to GT 740 graphics card of the desktop version-let's put it this way.
Of course, desktop graphics cards and notebook graphics cards are not exactly the same, and notebook GPU frequency is low. Considering the power consumption, the actual performance difference is smaller than the desktop version, so Microsoft can say that the unique display performance of their customized version has reached the level of GTX 950M M. This is not entirely a big talk, but users who bought the unique display version of the Surface Book notebook will still be somewhat lost after knowing the truth.