Added Nvidia RTX 4090 benchmarks in Readme

Author: ProjectPhysX

README.md

@@ -189,6 +189,7 @@ In consequence, the arithmetic intensity of this implementation is 2.13 (FP32/FP
 | AMD Radeon RX 580 4GB         |               6.50 |           4 |          256 |              946 (57%) |              1848 (56%) |              1577 (47%) |
 | AMD Radeon HD 7850            |               1.84 |           2 |          154 |              112 (11%) |               120 ( 6%) |               635 (32%) |
 | Intel Arc A770 LE             |              19.66 |          16 |          560 |             2741 (75%) |              4591 (63%) |              4626 (64%) |
+| Nvidia GeForce RTX 4090       |              82.58 |          24 |         1008 |             6040 (92%) |             11762 (90%) |             12212 (93%) |
 | Nvidia GeForce RTX 3090 Ti    |              40.00 |          24 |         1008 |             5717 (87%) |             10956 (84%) |             10400 (79%) |
 | Nvidia GeForce RTX 3090       |              39.05 |          24 |          936 |             5418 (89%) |             10732 (88%) |             10215 (84%) |
 | Nvidia GeForce RTX 3080 Ti    |              37.17 |          12 |          912 |             5202 (87%) |              9832 (87%) |              9347 (79%) |