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AMD Radeon RX 7700 XTvsAMD Radeon RX 7800 XT

The AMD Radeon RX 7700 XT and the AMD Radeon RX 7800 XT share the same RDNA 3 architecture, PCIe 4.0 interface, and physical card length. Choosing between them depends entirely on whether you prefer lower cost or higher memory capacity and shader performance.

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Intro

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Best for

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Biggest differences

  • Memory bandwidth

    AMD Radeon RX 7800 XT leads

    +44%

    higher is better

    • AMD Radeon RX 7700 XT432 GB/s
    • AMD Radeon RX 7800 XT624 GB/s

  • Video memory

    AMD Radeon RX 7800 XT leads

    +33%

    higher is better

    • AMD Radeon RX 7700 XT12 GB
    • AMD Radeon RX 7800 XT16 GB

  • Memory bus width

    AMD Radeon RX 7800 XT leads

    +33%

    higher is better

    • AMD Radeon RX 7700 XT192 bit
    • AMD Radeon RX 7800 XT256 bit

  • Last-level cache

    AMD Radeon RX 7800 XT leads

    +33%

    higher is better

    • AMD Radeon RX 7700 XT48 MB
    • AMD Radeon RX 7800 XT64 MB

Where each one wins

  • AMD Radeon RX 7700 XT

    • Launch price
    • Boost clock
    • Base clock
    • Board power

  • AMD Radeon RX 7800 XT

    • Shader cores
    • FP32 compute
    • Video memory
    • Memory bus width
    • Memory bandwidth
    • Memory speed
    • Last-level cache
    • HDMI version

What both have

  • Release date2023-09
  • ArchitectureRdna 3
  • Memory typeGddr6
  • Recommended PSU700 W
  • Power connectors8-pin
  • PCIe version4.0
  • PCIe lanes16 lanes
  • DisplayPort version2.1
  • HDMI outputs1 ports
  • DisplayPort outputs3 ports
  • Max displays4 displays
  • Hardware encodeH.264, HEVC, AV1
  • Card length267 mm
  • Slot width2.5 slots

Every spec

Red marks the better value in each row.

SpecAMD Radeon RX 7700 XTAMD Radeon RX 7800 XT
Overview

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Overview specs

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Release date2023-092023-09
Launch price449 USD499 USD
Graphics chip

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Graphics chip specs

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ArchitectureRdna 3Rdna 3
Shader cores3,456 cores3,840 cores
Boost clock2,544 MHz2,430 MHz
Base clock1,435 MHz11,295 MHz
FP32 compute35.2 TFLOPS37.3 TFLOPS
Memory

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Memory specs

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Video memory12 GB16 GB
Memory typeGddr6Gddr6
Memory bus width192 bit256 bit
Memory bandwidth432 GB/s2624 GB/s
Memory speed18 Gbps19.5 Gbps
Last-level cache48 MB64 MB
Power

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Power specs

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Board power245 W263 W
Recommended PSU700 W3700 W
Power connectors8-pin48-pin
Interface

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Interface specs

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PCIe version4.04.0
PCIe lanes16 lanes16 lanes
Display outputs

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Display outputs specs

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HDMI version2.12.1a5
DisplayPort version2.162.17
HDMI outputs1 ports1 ports
DisplayPort outputs3 ports3 ports
Max displays4 displays4 displays
Video engine

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Video engine specs

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Hardware encodeH.264, HEVC, AV1H.264, HEVC, AV1
Video encodersNot publishedNot published
Size

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Size specs

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Card length267 mm267 mm
Card heightNot publishedNot published
Slot width2.5 slots2.5 slots
Notes on 7 values — test conditions and caveats
  1. 1AMD Radeon RX 7700 XT, Base clock: AMD publishes only Game (2171 MHz) and Boost clocks; no base clock appears on AMD's page.
  2. 2AMD Radeon RX 7700 XT, Memory bandwidth: AMD also lists 1995 GB/s 'effective' bandwidth including Infinity Cache; 432 GB/s is the raw VRAM figure.
  3. 3AMD Radeon RX 7700 XT, Recommended PSU: AMD bases this rating on a Ryzen 9 7950X system; your needs may differ.
  4. 4AMD Radeon RX 7700 XT, Power connectors: Reference card uses two 8-pin PCIe power connectors.
  5. 5AMD Radeon RX 7800 XT, HDMI version: AMD's spec page lists HDMI 2.1; its own press release and Notebookcheck state HDMI 2.1a.
  6. 6AMD Radeon RX 7700 XT, DisplayPort version: Notebookcheck specifies the DP 2.1 output at UHBR13.5 link rate.
  7. 7AMD Radeon RX 7800 XT, DisplayPort version: Notebookcheck lists the DisplayPort 2.1 link rate as UHBR13.5; AMD notes DP 2.1 support depends on AIB designs.

Performance and power

The RX 7800 XT takes the lead in overall graphics capability with 3,840 shader cores and 37.3 TFLOPS of FP32 compute. This raw muscle translates into smoother frame rates in demanding titles compared to the smaller core count of the RX 7700 XT.

That extra performance requires slightly more electricity, as the RX 7800 XT draws 263 W of board power. Opting for the RX 7700 XT drops power draw to 245 W, though both cards require a 700 W power supply in your system.

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Performance and power

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Memory and caching

Memory setup is a major dividing line for these two GPUs. The RX 7800 XT equips 16 GB of GDDR6 video memory across a 256-bit bus, backed by a 64 MB last-level cache.

The RX 7700 XT steps down to 12 GB of VRAM on a 192-bit bus with a 48 MB cache. The larger memory buffer and wider bus on the heavier model help maintain high resolutions and texture details without stuttering.

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Memory and caching

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Price and value

For budget-conscious builders, the RX 7700 XT enters the market at a more affordable $449 launch price. It manages a higher boost clock of 2,544 MHz to help offset its smaller core count.

Stepping up to the RX 7800 XT costs $499 at launch. That extra investment buys you wider memory bandwidth and significantly more headroom for modern games.

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Price and value

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The Verdict

Buy the AMD Radeon RX 7700 XT if you want to save money while maintaining high clock speeds. Buy the AMD Radeon RX 7800 XT if you need maximum VRAM and shader power for demanding games.

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Verdict

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Where to buy

FAQ

What power supply do these graphics cards require?

Both models recommend a 700 W power supply unit for stable operation.

Do these GPUs support AV1 video encoding?

Yes, both feature hardware encode support for H.264, HEVC, and AV1.

What physical space do they take up in a PC case?

Both cards measure 267 mm in length and occupy 2.5 slots of space.

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FAQ

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