Sapphire Nitro+ Radeon RX 7900 XTX Vapor-X 24GB: specs and who it suits

The Sapphire Nitro+ Radeon RX 7900 XTX Vapor-X (model 11322-01-40G) is a high-end graphics card built on AMD's RDNA 3 architecture. With 24GB of GDDR6 memory and a large triple-fan style cooler, it targets high-resolution gaming, content creation and other demanding graphics work in a desktop PC.

Clocks and memory

Sapphire lists a boost clock of up to 2680 MHz and a game clock of up to 2510 MHz. The game clock is the typical speed the GPU holds in gaming loads, while the boost clock is the short-term peak. Both depend on cooling and power.

The card carries 24GB of GDDR6 on a 384-bit bus, with an effective memory clock of 20 Gbps. Memory capacity matters for high-resolution textures, 4K gaming, large video projects and 3D scenes. Memory bandwidth, which combines bus width and memory speed, determines how quickly the GPU can feed data to its cores. A wide 384-bit bus with fast memory gives a high bandwidth figure, which tends to help at higher resolutions.

Size and cooling

The listing gives the form factor as 3.5 slot, ATX, with dimensions of 320 mm long, 135.75 mm wide and 71.6 mm high (roughly 12.6 x 5.3 x 2.8 inches). That is a big card. It will cover several expansion slots next to it, which means fewer free slots for other add-in cards.

The name refers to Sapphire's Nitro+ range and its Vapor-X cooling design. Vapor-X is a vapour-chamber cooler design, where a sealed chamber spreads heat across the heatsink. It is designed to keep temperatures and noise lower under load, but results depend on case airflow.

Outputs

Four display outputs are listed: two HDMI and two DisplayPort. This allows several monitors, VR headsets or a TV to be connected at once. Check the manual for exact versions and the combinations of screens, resolutions and refresh rates supported.

RDNA 3 and drivers

RDNA 3 is AMD's graphics architecture generation behind the Radeon RX 7000 series. Features such as hardware ray tracing and upscaling technologies depend on AMD's drivers and on game support, so see AMD's documentation for what is available.

Who it suits

It suits enthusiasts with a spacious case and a strong power supply who play at high resolutions or high refresh rates, or who work with large 3D, video or AI-related projects that benefit from lots of video memory. It is excessive for light gaming or office PCs.

What to check before you buy

• Case fit: measure the clearance for a 320 mm, 3.5-slot card, and check that nothing blocks the cooler's fans.
• Power supply: high-end cards need a strong power supply and the right power connectors. Check the manufacturer's recommendation on wattage and cables.
• Motherboard and slots: you need a free PCIe x16 slot and enough room beside it.
• Weight: large cards are heavy, so check whether your case needs a support bracket.
• Monitors: match HDMI and DisplayPort versions to your screens.
• Airflow: plan for good case ventilation.

The short version

• A 24GB GDDR6 AMD Radeon RX 7900 XTX on RDNA 3, model 11322-01-40G.
• Boost clock up to 2680 MHz, game clock up to 2510 MHz, 384-bit bus.
• Two HDMI and two DisplayPort outputs.
• 3.5-slot, 320 mm card with Vapor-X cooling.
• Needs a large case and a strong power supply.

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