The Colorful iGame GeForce RTX 4090 Neptune OC features a 360mm AIO solution, custom PCB, and a 630-Watt TGP. Colorful announced the iGame GeForce RTX 4090 Neptune OC graphics card in September and it was already believed the max TGP could be over 600-Watts but now it is officially out and the OC setting spec has been revealed. The good news for those worried about their utility bill or strain on the PSU is that maxing this AD102 GPU to such a degree isn’t providing any meaningful gain over the factory OC setting.
An early review by Expreview shows the card only improved by 0.7% when set to max TGP vs the stock one-click 550-Watt OC setting. Another plus to keeping the factory preset was that under full load, using the 550-Watt setting and a PCAT kit, the card was seen only using an average of 450W with a peak value of 470W. That is still a lot of power consumption but the AIO kept the card cool with the hot spot never exceeding 69.3C while the GPU itself only reached 56.8C, each of these is nearly 10C less than a FE. Noise under full load was measured as 2.2% less than a GeForce RTX 4090 FE. Using the 1-click setting set the boost clock to 2640 MHz. By comparison, the Founders Edition has a stock setting of 2520 MHz so this is only 120 MHz higher. As such synthetic testing only showed gains of up to 2.3% but the reviewer believed they were also experiencing CPU bottlenecks with their Intel Core i9-12900K. VideoCardz notes that these cards have only just been sent out to reviewers so more game metric comparisons should be forthcoming.
Does less power equal more?
A big takeaway from this is that despite the hype with some of the gargantuan appetites for the AD102 GPU it’s quite possible that most users will never need to push it that far. Multiple reviews are now showing that stock power settings are consistently getting users within single-digit percentages of a card’s max potential while using considerably less power than using max TGP. The reviewer for the iGame GeForce RTX 4090 Neptune OC also noted that Colorful used a 24+4 phase power supply for the graphics card and its memory and theorized this could be for an upcoming fully enabled AD102 GPU.
The price for the Colorful iGame GeForce RTX 4090 Neptune OC converts to ~$2,070.60.