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Graphics cards/AMD Radeon RX 6600

AMD · Radeon RX 6000 · Desktop

AMD Radeon RX 6600

The AMD Radeon RX 6600 is AMD’s RDNA 2 (Navi 23) desktop graphics card with 8 GB of GDDR6 memory, 1,792 shading units and a boost clock of 2491 MHz.

ASUS Radeon RX 6600 XT, the sibling Navi 23 card; board and cooler vary by add-in-board partner, shown in place of the AMD Radeon RX 6600, which has the same exteriorStand-in

Pictured: ASUS Radeon RX 6600 XT, the sibling Navi 23 card; board and cooler vary by add-in-board partner. No photograph of the AMD Radeon RX 6600 itself is openly licensed.

Photo: Chi Ho Chan · CC BY 2.0 · via Wikimedia Commons · Pictured: ASUS Radeon RX 6600 XT, the sibling Navi 23 card; board and cooler vary by add-in-board partner, which has the same exterior

Overview

The AMD Radeon RX 6600 is AMD’s RDNA 2 (Navi 23) desktop graphics card with 8 GB of GDDR6 memory, 1,792 shading units and a boost clock of 2491 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 2 (Navi 23)
Shading units
1,792

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

Base clock
1626 MHz
Boost clock
2491 MHz
Memory
8 GB
Memory type
GDDR6
Memory bus
128-bit
TDP
132 W

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

Process
7 nm
Launched
2021-10-13

Sources

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

FigureAs printedSourceChecked
Shading units1,792Stream Processorsamd.comSpecification page
Boost clock2491 MHzBoost Frequencyamd.comSpecification page
Memory8 GBMax Memory Sizeamd.comSpecification page
Memory typeGDDR6Memory Typeamd.comSpecification page
Memory bus128-bitMemory Interfaceamd.comSpecification page
TDP132 WTypical Board Power (Desktop)amd.comSpecification page
Launched2021-10-13Launch Dateamd.comSpecification page

Architecture, Base clock, Process: recorded from en.wikipedia.org before each figure carried its own source. The maker's page does not print them in this form, so they do not count as verified.

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.