The iGame GeForce RTX 3090 Kudan comes equipped with a robust 14+8+4-phase power delivery subsystem. It would appear that Colorful just recycled the Vulcan’s PCB for the Kudan, though. A trio of 8-pin PCIe power connectors ensure that the Kuda gets all the juice that it needs.
For comparison, the Galax GeForce RTX 3090 HOF also features a 14+8+4 design so it’s on equal grounds with the iGame GeForce RTX 3090 Kudan. The EVGA GeForce RTX 3090 K|NGP|N Edition is at a slight disadvantage with only a 23-phase power delivery subsystem. Of course, the quality of the power stages are equally important. Neither Galax or Colorful lists what kind of power stages their respective graphics cards are using. In EVGA’s case, the GeForce RTX 3090 K|NGP|N Edition utilize MPS MP86956 power stages that are rated for 60A.
Colorful has set the thermal limit for the iGame Ge Force RTX 3090 Kudan to 500W. That’s 43% (150W) higher than Nvidia’s reference specifications for the GeForce RTX 3090. With these overclocking-oriented graphics cards, thermal limits are pointless since there is always modified firmware floating around that increases the threshold to 1000W.
Given its thermal headroom and potent power delivery subsystem, the iGame GeForce RTX 3090 Kudan should make any overclocker happy if you have five grand to spare.