GPU - Turbo Boost

[Vector Sigma]

Hello,

I wish to understand how this Turbo boost works. The Turbo Boost on many of the 3rd party versions of the 3090 GPUs are quite beefy.

If you're playing a demanding game in 4k with Ultra Settings and RTX on high enabled, is the turbo boost speed sustainable providing your cooling is sufficient or is it similar to CPU boost where it's only for quick bursts, then defaults back to stock speed?

An example comes to mind is the CPU 10900 can Turbo Boost to 5.3Ghz, but that will only be for a limited period unless your CPU is overclocked on all cores.

In short, I'm trying to work if it's worth buying the Foundation version or the 3rd party editions where higher overclocks, but are they genuine overclocks?

I'll be opting for a customer water rig for both CPU and GPU.

Thank you and pardon my technical ignorance.

 

[Vector Sigma]

It's similar to a modern CPU as in it boosts according to the specific game/temp/power limit and resolution.

It won't hold steady at an exact frequency as its usual limited by either power or temp and how demanding a particular scene in the game is to render, you can lock it at a set frequency in afterburner though providing you set the right voltage and clock speed so your not hitting the power limit.

Thank you for the explanation.

So, it'll require some experimenting to see how far or fast it can be pushed.

 

[Vector Sigma]

As above, it really depends on the workload, and the power limit is the main limit with the 30 series cards. In some games my 3090 will stay at 2100 MHz plus using nearly 400W, in others it will be around 1950 MHz using the same amount of power.

If you're trying to choose between Founders and 3rd party cards, the only key difference is the power limit, with some allowing you up to 500W. Even though it's a 20 percent increase over the Founder's Edition, you won't be getting much more than a few percent better performance, and that's only likely under water cooling.

Hello,

Thank you for sharing.

In your case, does the GPU speed vary between 2100 Mhz and 1950 Mhz because you haven't set/locked a frequency in Afterburner? Will it stay locked if your card is GPU chilled and feeding it enough power?