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Graphics cards/AMD Radeon RX 7900 XT

AMD · Radeon RX 7000 · Desktop

AMD Radeon RX 7900 XT

The AMD Radeon RX 7900 XT is AMD’s RDNA 3 desktop graphics card with 20 GB of GDDR6 memory and a boost clock of 2400 MHz.

Radeon RX 7900 XTIllustration

Drawn from this part’s own specifications. No openly-licensed photograph of the AMD Radeon RX 7900 XT exists, so this is an illustration rather than a photograph.

Overview

The AMD Radeon RX 7900 XT is AMD’s RDNA 3 desktop graphics card with 20 GB of GDDR6 memory and a boost clock of 2400 MHz. These are the manufacturer’s published figures. They describe what the chip is designed to do, not what your particular machine does with it, and the gap between those two is usually cooling. A boost clock is a ceiling rather than a promise, and how long a graphics card holds it under continuous load is the one thing no specification sheet can tell you.

Specifications

Architecture
RDNA 3
Shading units
Not verified

Comparable within an architecture. Across vendors or generations it is not a like-for-like count.

Base clock
Not verified
Boost clock
2400 MHz
Memory
20 GB
Memory type
GDDR6
Memory bus
320-bit
Game clock
2000 MHz

AMD's typical clock while gaming. A different quantity from a base clock.

Compute units
84
TDP
300 W

Board power, not measured draw. A laptop GPU's power is a range the laptop maker chooses within.

Process
5 nm
Launched
2022-12-13

Sources

Each figure, the label its source printed beside it, and the day it was read.

FigureAs printedSourceChecked
ArchitectureRDNA 3Release textir.amd.comLaunch release
Boost clock2400 MHzBoost Clockir.amd.comLaunch release
Memory20 GBGDDR6ir.amd.comLaunch release
Memory typeGDDR6GDDR6ir.amd.comLaunch release
Memory bus320-bitMemory Interfaceir.amd.comLaunch release
Game clock2000 MHzGame Clockir.amd.comLaunch release
Compute units84Compute Unitsir.amd.comLaunch release
TDP300 WTBPir.amd.comLaunch release
Process5 nmRelease textir.amd.comLaunch release
Launched2022-12-13Release textir.amd.comLaunch release

Measured on SystemCheck: not enough runs yet. Run the test to add yours.

Compare

The 6 nearest graphics cards in the same segment, each with a published side-by-side.

Every figure on this sheet 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.