RTX 4080 Super vs RX 7900 XTX — 16GB vs 24GB for gaming and local AI

RTX 4080 Super vs RX 7900 XTX: 16GB vs 24GB for gaming and local AI

Hardware advice reviewed 2026-10-20 · asking-price samples checked for freshness · Methodology

High-end alternatives with different memory ceilings: 16GB on the RTX 4080 Super and 24GB on the RX 7900 XTX.

Verdict: Choose the RX 7900 XTX when a supported workload needs more than 16GB and fits within 24GB. Choose the RTX 4080 Super when your required application needs CUDA and fits in 16GB. Gaming performance and AI throughput need separate comparisons.

	RTX 4080 Super	RX 7900 XTX
Historical editorial estimate	$1,000 ($850–$1,175)	$900 ($775–$1,050)
eBay median (filtered)	—	—
Memory	16GB VRAM	24GB VRAM
$ / GB (sample median)	Unavailable	Unavailable
Power	320W TDP	355W TDP
Launch MSRP	$999	$999

Fair values are historical editorial estimates, not current offers; eBay medians are filtered Buy-It-Now samples, not checkout prices. See how we compute these.

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Verify model fit before buying

Memory capacity alone cannot tell you which models run. Check the artifact, runtime, context and concurrency, including cache and working buffers. Mac memory is shared with the operating system. See our memory sizing guide.

We have not benchmarked these configurations. Hardware advice reviewed 2026-10-20. Check the sources below for supported hardware and software requirements.

More memory versus a different backend

The extra 8GB is useful only when the application can use the Radeon. Check extensions as well as the main runtime. If CUDA is mandatory and you need 24GB, compare a 24GB NVIDIA option instead of forcing this pair to fit.

How to compare gaming results

Use results for the same game, resolution, settings and test system. Separate native rendering from upscaling and frame generation, and look at frame-time consistency as well as average FPS. We have not run matched gaming benchmarks for these cards.

Sources and review

Ollama hardware and operating-system support

FAQ

Is the RX 7900 XTX equivalent to an RTX 4080 Super?

It is a high-end shopping alternative, not an exact equivalent. The memory capacity and software support differ, and neither specification proves a universal gaming or AI performance winner.

Which price should I use for this comparison?

Use the dated eBay sample medians as a starting point, then compare shipping, tax, condition and returns. A missing sample means insufficient fresh data, not that the card is unavailable. Historical editorial estimates are not checkout offers.