The operative word is Custom or Customized. Is it first generation or second generation Maxwell cores that were used/customized? Maxwell xxxM models call for PCIe 3.0 x8 or x16 interfaces and this lists PCIe 3.0 x4. Customized? Memory size, bandwidth, and transfers don't match any products. Customized? GeForce 900 series - Wikipedia, the free encyclopedia see 9xx M table. Lets say it was based on a 950M which lists a 65W TDP PCIe 3.0 x16 interface, 2GB memory size, 80Gb/s bandwidth, 128 bit bus width, GDDR5 memory. There's a lot of differences. PCIe x4 is only 1/4 of x16 and interestingly 65w/4 = ₁6.25w the listed 64bit interface is half the 128 and the 40Gb bandwidth is half the 80Gb bandwidth listed. 1GB of ram is half the 2048. With so many modifications the end result is what? Assuming it started with a 940M is no picnic either.