Re: 6 to 8 pin adapters
2021/01/17 18:22:25
(permalink)
Me, I wouldn't worry at all about using a 6pin-to-8pin adapter with that card.
A GTX 1660 Ti is a lower-powered 120W card..The PCIe slot itself is rated for 75W..A 6pin PCIe supplemental power connector is rated for 75W..An 8pin PCIe supplemental power connector is rated for 150W..The 6 and 8 pin PCIe supplemental power connectors are for providing additional power over and above the 75W the card can get from the PCIe slot.
120W (card) minus 75W (from PCIe slot) equals 45W that would be needed for the PCIe supplemental power connector to provide/handle..The 6pin 75W rating is 30W more than the 45W the card could get from it, safe with no overclocking/overvolting the card.
There's other options too, such as Dual 6pin-to-8pin and Dual Molex/Perif-to-8pin and Dual SATA-to-8pin adapters that are widely available.
You need to be sure that a standard PSU would even fit in and be compatible with a Dell XPS 8900 if you're thinking about getting a better PSU..Prebuilts like that many times take a proprietary PSU and a normal ATX PSU won't work..You can check on that yourself..You might have no other option than to use an adapter.
* Corsair Obsidian 450D Mid-Tower - Airflow Edition * ASUS ROG Maximus X Hero (Wi-Fi AC) * Intel i7-8700K @ 5.0 GHz * 16GB G.SKILL Trident Z 4133MHz * Sabrent Rocket 1TB M.2 SSD * WD Black 500 GB HDD * Seasonic M12 II 750W * Corsair H115i Elite Capellix 280mm * EVGA GTX 760 SC * Win7 Home/Win10 Home * "Whatever it takes, as long as it works" - Me