1440 Default clock and 1710 boost clock is the exact same as the Nvidia reference design: [URL] If you scroll down on that page until you hit "specs" and click on  "view full specs" you will see the reference design specs.   The specs on the Dell card match the Nvidia reference specs. What does not match is the cooling solution. Many board partners use 3 fan cooling solution. Dell had to use their own custom solution, a 2 fan setup, because they had to shorten up the card a bit to make it fit in the Aurora chassis.   The way these cards work they boost up past the Boost frequency to give you extra performance, but only if thermals, voltage and power allow it to do so. These cards have various sensors on board to measure temperature, voltage, current and power at the various components that make up these cards.   The reason why you are not seeing the same performance is because this Dell variant reaches it's limits faster than other aftermarket versions. Once it reaches one of the limits it will start to clock itself down to prevent going past it's limits. On mine I can see boosts up to 2050 Mhz on firestrike (regular) during some of the tests. On others it might "only" boost up to 1980 or 1950 Mhz. Always keep in mind that as long as it can maintain 1710 or higher, it is running as advertised. Anything above 1710 is a bonus, based on the various limits that exist to protect the card from damage.   Also, the other thing to keep in mind specifically with 3dmark online scores from others, is that the high scores are reached in unstable states. They often push everything to the limit just long enough to run the benchmark. Running under those conditions permanently would cause crashes often. They often have to try multiple times until it ran one without crashing. I have seen other scores with 4.4 Ghz on a 3700X and 2170 Mhz on the RTX 3080. Needless to say I cannot compete with that, but I can run mine 24/7 without crashing and I bet they crash in 10 minutes.
So somebody has already posted this but I wanted to repost because I wanted to reaffirm that this issue exist. So I and many other owners of the Aurora R10/R11 notice there’s a power limit on the RTX 3080 card that doesn’t allow the card to perform to spec, as far as port royal test are concern this card performs below average. I’ve tested other games and I cannot get the same performance as the other RTX 3080 variants. My card with a 105+ overclock on MSI hits 1985 MHz max and it doesn’t perform as well as reference RTX 3080 (no overclock). I know the last forum just assumed the smaller card meant less performance but that just doesn’t seem right. I was thinking of transferring this gpu to another pc but if there is a power limit that stops the card from boosting over 2000 MHz, what’s the point of better cooling? Either way for you pc enthusiast please shed some light on the issue because my knowledge is limited on how the wattage works. MSI tells me it hits 320 watts but if you can explain why am I getting worse performance that would be very much appreciated. 
Aurora R10, RTX 3080 power limit?