13 specifications

NVIDIA GeForce RTX 4070 Ti SUPER vs AMD Radeon RX 7900 XTX

On paper, the AMD Radeon RX 7900 XTX carries more memory (24 GB against 16 GB), the NVIDIA GeForce RTX 4070 Ti SUPER has more shading units, and the AMD Radeon RX 7900 XTX has a wider memory bus. Shading-unit counts are not directly comparable across different architectures, so read that row as context rather than a verdict. Specifications describe what each card is designed to do; how much of that either one holds under continuous load is a separate question.

10 specifications · 5 with a higher side

Full specifications

NVIDIA GeForce RTX 4070 Ti SUPER

NVIDIA · GeForce RTX 40 · Desktop

Full specifications

AMD Radeon RX 7900 XTX

AMD · Radeon RX 7000 · Desktop

Compute

Architecture

Ada Lovelace

RDNA 3 (Navi 31)

Shading units

8,448

6,144

Base clock

2340 MHz

1900 MHz

Boost clock

2610 MHz

2500 MHz

Memory

16 GB

24 GB

Memory type

GDDR6X

GDDR6

Memory bus

256-bit

384-bit

Power and platform

TDP

285 W

355 W

Process

Not verified

5 nm

Launched

2024-01-24

2022-12-13

A check marks the higher figure only on rows where higher is unambiguously better. Rows without one are not ties; they are specifications where “better” has no meaning.

Reading the table

What the difference means.

2 years apart

The RTX 4070 Ti SUPER (Ada Lovelace, 2024) is 2 years newer than the RX 7900 XTX (RDNA 3 (Navi 31), 2022). A newer architecture brings more than speed: newer video encoders and decoders, newer upscaling and frame generation, and a longer run of driver updates ahead of it.

Video memory

The RX 7900 XTX has 24 GB of video memory against 16 GB. Memory does not make a card faster until it runs out, and then the drop is sharp: textures spill into system memory and frame times stutter. High resolutions, high texture settings, heavy mods and running AI models locally are what fill it.

Memory bus

The RX 7900 XTX moves data over a 384-bit bus of GDDR6; the RTX 4070 Ti SUPER uses 256-bit GDDR6X. The bus width and the memory type together set how fast the chip can reach its own memory, which shows at high resolutions where every frame moves more data. A narrow bus with fast memory can match a wide one with slow memory, so neither figure settles it alone.

Shading units

The counts differ, 8,448 against 6,144, but these are different designs from different makers, and a shading unit on one is not the same amount of work as on the other. The row cannot be used to rank this pair.

Board power

The RX 7900 XTX draws up to 355 W against 285 W. That is heat the case has to exhaust and current the power supply has to deliver: allow a supply of about 800 W for the RX 7900 XTX with a typical processor, and check the card's power connectors against the supply's. A card that cannot shed its heat does not fail. It lowers its clocks after a few minutes, which is the frame rate that falls the longer you play.

Which to pick, on paper

High resolutions, heavy textures, local AI: RX 7900 XTX; 24 GB against 16 GB. Memory is the wall these workloads hit first.
A small case or a modest power supply: RTX 4070 Ti SUPER; 285 W against 355 W: less heat, fewer power connectors, quieter fans.

What no table says

How much of its speed a graphics card keeps after the first minute depends on the cooling and the power limit of the machine it is in. If you own one of these, measure it: the test is free and runs in this browser.

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Questions

Is the RTX 4070 Ti SUPER better than the RX 7900 XTX?: By need, on the specifications: high resolutions, heavy textures, local ai: the RX 7900 XTX; a small case or a modest power supply: the RTX 4070 Ti SUPER. They are different designs, so the raw counts cannot rank them. Frame rates depend on the game and its settings, and how much speed either card keeps after ten minutes depends on its cooling, which is what a sustained test measures.
Is 16 GB of video memory enough?: For 1080p at sensible settings, yes in most games. At 1440p and above, with high texture settings, or for running AI models, 24 GB gives real headroom. When memory runs out the symptom is stutter, not a lower average.
What power supply does the RX 7900 XTX need?: Allow about 800 W with a typical processor, and make sure the supply has the power connectors the card uses. The RTX 4070 Ti SUPER at 285 W is easier on both.

More comparisons

Every figure on this table is a design target. None of it is a measurement.

Nothing above describes how a graphics card behaves twenty minutes into a sustained workload, which is where two chips with nearly identical specifications routinely diverge. A boost clock is a ceiling the vendor permits, not a rate the chip sustains, and whether it holds depends on the cooling, the case, the power profile and the room. None of those appear on a specification sheet.

We deliberately do not reduce these figures to a single score. A composite invented from specifications would look authoritative and measure nothing, and choosing the weights would be choosing the winner.

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