Is it worth upgrading?

A newer card winning every row of a comparison table does not make it worth buying. This works out how much faster it actually is at your resolution, what that improvement costs per percentage point, and whether a cheaper card would get you most of the way there.

Both cards have to be ones CompareYourGPU tracks. The database currently covers current and recent desktop cards, so if you are coming from something older it may not be listed yet. See what is covered.

The card you have now

The card you are considering

What resolution do you play at?

Which of these do you play? Optional. Sizes the estimate against the most demanding one.

RTX 3090 Ti → RTX 5080 at 1440p

Worth considering, but you are paying a premium

Marginal

Performance gain: +34.5%; Estimated, native
Measured cross-check: Not tested
Upgrade cost: $999; Price of the new card
Cost per 1% gained: $29

What you gain

In favour: Estimated 34.5% more performance at 1440p.
In favour: Estimated frame rate moves from roughly 100-145 FPS to 135-190 FPS.
In favour: 56.5% stronger in ray-traced workloads.
In favour: Adds DLSS 4 Multi Frame Generation, Hardware AV1 encoding.
In favour: Works out at about $29 per percentage point of performance gained.

What it costs you

Caution: You would lose 8 GB of memory, going from 24 GB to 16 GB.
Caution: At $29 per percentage point this is above the $25 CompareYourGPU treats as poor value for an upgrade.

Compare them side by side About the RTX 5080

The two cards side by side

Key differences between the RTX 3090 Ti and the RTX 5080
Measure	RTX 3090 Ti	RTX 5080	Change
Estimated FPS at 1440p	100-145	135-190	+34.5%
VRAM	24 GB	16 GB	-8 GB
Board power	450 W	360 W	-90 W
Ray tracing index	46	72	+56.5%
Price on record	$1,999	$999	-$1,000
Launched	March 29, 2022	January 30, 2025	2.8 years apart

Where these numbers come from

Performance gain: CompareYourGPU estimated index, native resolution, no upscaling.
VRAM, board power and features: manufacturer specifications.
Prices: launch MSRP. CompareYourGPU holds no verified street price for these cards, so the cost per percentage point is a reference figure rather than what you would pay today.
The cost of the upgrade is the price of the new card. CompareYourGPU does not model what your current card might sell for.