         // https://www.nvidia.com/content/dam/en-zz/Solutions/Data-Center/tesla-product-literature/NVIDIA-Kepler-GK110-GK210-Architecture-Whitepaper.pdf
         // "While the Maxwell architecture performs double precision calculations at rate of 1/32 that of single precision calculations..."
         case 5:
-            r.fp64 =   4;
-            r.fp32 = 128;
+            switch (minor) {
+                // Quadro M
+                case 0:
+                // Quadro etc
+                case 1:
+                // Jetson Nano
+                case 2:
+                    r.fp64 =   4;
+                    r.fp32 = 128;
+                    break;
+            }
             break;
         // Pascal
         // GP100 = 6.0 https://images.nvidia.com/content/pdf/tesla/whitepaper/pascal-architecture-whitepaper.pdf Table 1

            }
            break;
        // Ampere
        case 8:
            switch (minor) {
                case 0:
                    r.fp64 =  32;
                    r.fp32 =  64;
                    break;
                case 6:
                    r.fp64 =  32;
                    r.fp32 =  64;
                    break;
            }
            break;

        // https://www.nvidia.com/content/dam/en-zz/Solutions/Data-Center/tesla-product-literature/NVIDIA-Kepler-GK110-GK210-Architecture-Whitepaper.pdf
        // "Each of the Kepler GK110/210 SMX units feature 192 single-precision CUDA cores,
        //  and each core has fully pipelined floating-point and integer arithmetic logic units."
        //  "the GK110 and GK210 Kepler-based GPUs are capable of performing double precision calculations at a rate of up to 1/3 of single precision compute performance."
        case 3:
            switch (minor) {
                // K20
                case 0:
                // K40
                case 5:
                // K80
                case 7:
                    r.fp64 =  64;
                    r.fp32 = 192;
                    break;
            }
            break;
        // Maxwell
        // https://developer.nvidia.com/blog/5-things-you-should-know-about-new-maxwell-gpu-architecture/
