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AMD Radeon RX 9070vsAMD Radeon RX 7800 XT: Spec Comparison

The AMD Radeon RX 9070 and the AMD Radeon RX 7800 XT share identical 16 GB GDDR6 memory configurations across a 256-bit bus. However, they diverge in architecture, power draw, and interface speed, making the newer model a more efficient choice for modern systems.

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Intro

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Best for

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Biggest differences

  • Board power

    AMD Radeon RX 9070 leads

    −16%

    lower is better

    • AMD Radeon RX 9070220 W
    • AMD Radeon RX 7800 XT263 W

  • Launch price

    AMD Radeon RX 7800 XT leads

    −9%

    lower is better

    • AMD Radeon RX 9070549 USD
    • AMD Radeon RX 7800 XT499 USD

  • Recommended PSU

    AMD Radeon RX 9070 leads

    −7%

    lower is better

    • AMD Radeon RX 9070650 W
    • AMD Radeon RX 7800 XT700 W

  • Shader cores

    AMD Radeon RX 7800 XT leads

    +7%

    higher is better

    • AMD Radeon RX 90703,584 cores
    • AMD Radeon RX 7800 XT3,840 cores

Where each one wins

  • AMD Radeon RX 9070

    • Boost clock
    • Memory bandwidth
    • Memory speed
    • Board power
    • Recommended PSU
    • PCIe version
    • HDMI version
    • DisplayPort version

  • AMD Radeon RX 7800 XT

    • Launch price
    • Shader cores
    • FP32 compute

What both have

  • Video memory16 GB
  • Memory typeGddr6
  • Memory bus width256 bit
  • Last-level cache64 MB
  • Power connectors8-pin
  • PCIe lanes16 lanes
  • Max displays4 displays
  • Hardware encodeH.264, HEVC, AV1

Every spec

Red marks the better value in each row.

SpecAMD Radeon RX 9070AMD Radeon RX 7800 XT
Overview

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Overview specs

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Release date2025-032023-09
Launch price549 USD1499 USD
Graphics chip

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Graphics chip specs

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ArchitectureRdna 4Rdna 3
Shader cores3,584 cores3,840 cores
Boost clock2,520 MHz22,430 MHz
Base clockNot published1,295 MHz
FP32 compute36.1 TFLOPS37.3 TFLOPS
Memory

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Memory specs

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Video memory16 GB16 GB
Memory typeGddr6Gddr6
Memory bus width256 bit256 bit
Memory bandwidth640 GB/s624 GB/s
Memory speed20 Gbps19.5 Gbps
Last-level cache64 MB64 MB
Power

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Power specs

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Board power220 W3263 W
Recommended PSU650 W700 W
Power connectors8-pin48-pin
Interface

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Interface specs

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PCIe version5.04.0
PCIe lanes16 lanes16 lanes
Display outputs

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Display outputs specs

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HDMI version2.1b2.1a5
DisplayPort version2.1a62.17
HDMI outputsNot published1 ports
DisplayPort outputsNot published3 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 lengthNot published267 mm
Card heightNot publishedNot published
Slot widthNot published2.5 slots
Notes on 7 values — test conditions and caveats
  1. 1AMD Radeon RX 9070, Launch price: AMD's $549 starting MSRP at launch; AMD sells no reference card, so partner models may cost more.
  2. 2AMD Radeon RX 9070, Boost clock: Peak 'up to' boost; AMD's game clock is 2070 MHz for typical gaming.
  3. 3AMD Radeon RX 9070, Board power: Partner overclocked cards can exceed 220 W; IGN measured 249 W peaks on a factory-OC card.
  4. 4AMD Radeon RX 9070, Power connectors: Two 8-pin PCIe power connectors are required (2x 8-pin per AMD and Sapphire).
  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 9070, DisplayPort version: Club386 lists the DP 2.1a link rate as UHBR13.5; UHBR20 is not supported.
  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 Efficiency

The newer Rdna 4 architecture brings architectural efficiency, reducing board power to 220 W and lowering the recommended system power supply to 650 W. This means less heat in your case and an easier load on your existing power supply.

While the older AMD Radeon RX 7800 XT reaches a slightly higher FP32 compute of 37.3 TFLOPS compared to the 36.1 TFLOPS on the RX 9070, the RX 9070 counters with a faster peak boost clock of 2,520 MHz and higher memory bandwidth at 640 GB/s.

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Performance and Efficiency

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Connectivity and Interface

Upgrading to PCIe version 5.0 gives the newer card a faster interface pipeline for compatible motherboards, though both options retain a full complement of 16 lanes.

Display outputs also see an upgrade on the newer card with HDMI 2.1b and DisplayPort 2.1a support, ensuring wider compatibility with the latest high-refresh monitors and TVs.

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Connectivity and Interface

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The Verdict

Buy the AMD Radeon RX 9070 if you want lower power consumption and newer connectivity standards. Buy the AMD Radeon RX 7800 XT if you prefer a lower launch price.

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Verdict

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Where to buy

FAQ

What power supply is required for these graphics cards?

The AMD Radeon RX 9070 requires a 650 W power supply, while the older AMD Radeon RX 7800 XT calls for a 700 W power supply.

Do both graphics cards feature the same amount of video memory?

Yes, both cards are equipped with 16 GB of GDDR6 video memory on a 256-bit bus.

What power connectors do they use?

Both graphics cards rely on 8-pin power connectors.

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FAQ

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