Radeon RX 7900 XT(X): AMD lays out the RTX 4080 as the first RDNA 3 opponent

AMD has again underlined which graphics card the Nvidia Radeon RX 7900 XT and RX 7900 XTX are targeting: the 16GB GeForce RTX 4080, which will be released on Wednesday. In a presentation, the manufacturer unsurprisingly puts its own advantages in the limelight, but continues to ignore tangible benchmarks.

The RTX 4080 is the opponent

At the official launch of the Radeon RX 7900 XT and 7900 XTX as the first and at least initially fastest representatives of the new GPU generation with RDNA 3 architecture, AMD's Frank Azor made it clear that you were competing with the GeForce RTX 4080 and not the GeForce RTX 4090 wants – and in all likelihood also can't in terms of performance.

In a further briefing, AMD has now emphasized what it sees as its own advantages over the RTX 4080, but has still not provided a direct benchmark comparison. Instead, AMD's marketing department focuses on other key data such as the larger number of shader units with more FLOPS (which does not necessarily result in higher FPS) or the larger memory expansion of 20 GB (RX 7900 XT) and 24 GB (RX 7900 XTX) versus Nvidia's 16GB.

AMD compares RX 7900 XT, RX 7900 XTX, RTX 4080 (Image: AMD)

In addition, there is the more compact format of the reference designs with a maximum length of 28.7 cm Depth of 2.5 slots, while the 12″ long RTX 4080 occupies 3 slots. On current occasion, the dig at the power connections should not be missing again: While there are potential problems with the adapter cables for the new 12VHPWR plug for Nvidia's newcomers, AMD avoids this connection and relies on two conventional 8-pin -Jacks.

Dimensions of the RX 7900 XTX (Image: AMD)
Dimensions of the RX 7900 XTX (image: AMD)
RX 7900 series with DP2.1 and USB-C (Image: AMD)

AMD's new generation of connections offers indisputable advantages, because DisplayPort 2.1, the latest version of the video interface, is already being used. In the supported UHBR13.5 mode with a combined speed of up to 54 Gbit/s, 8K monitors can be operated at 165 Hz. Since Nvidia is sticking with DisplayPort 1.4a, 8K monitors would be limited to 60 Hz.

Samsung has promised the first “8K” monitor with DisplayPort 2.1 with a new version of the Odyssey Neo G9. However, this will probably not offer the full 8K resolution as an UltraWide model.

A view of the circuit board of the RX 7900 XTX

AMD is showing the bare circuit board of the Radeon RX 7900 XTX for the first time, which can therefore boast 20 phases in the voltage regulators.

Circuit board (PCB) of the RX 7900 XTX (image: AMD)
Presumed PCB of the GeForce RTX 4080 (Image: VideoCardz)

Other images show the cooler design of the RX 7900 XTX, its top and bottom with a Aluminum sheet awaits. The vapor chamber is said to have been enlarged by 10 percent (compared to its predecessor?). In addition, new thermal interface material (TIM), a generic term for thermal paste or thermal pads, is used for the GPU as well as for the GDDR6 memory.

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Cooler of the RX 7900 XTX (Image: AMD)

The three axial fans are equipped with a temperature sensor and zero RPM mode, so the fans stop completely at low temperatures. Small areas between the fans are illuminated with RGB LEDs.

More benchmarks from AMD

The fact that AMD still does not provide a direct performance comparison with the RTX 4080 is probably due to the fact that it will not be officially released until November 16th. Even if AMD already has a sample, it still has to wait until then, because only then can test results be published.

And so AMD once again delivers benchmarks without external competitors, which only illustrate the leap in performance compared to its own RX 6950 XT.

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Image 1 of 6

4K gaming benchmarks (ray tracing, FSR) (Image: AMD)
8K Gaming with FSR (Image: AMD)
Footnotes 1 (Image: AMD)
Footnotes 2 (Image: AMD)
Footnotes 3 (Image: AMD)

ComputerBase has turned AMD's benchmarks into charts for easier comparison. When moving the mouse over one of the bars, the percentage distance can be easily read.

4K gaming with maximum details according to AMD

4K gaming with maximum details according to AMD (rasterization, no ray tracing)

  • Resident Evil Village:
    • Radeon RX 7900 XTX
      RDNA 3190.0
    • Radeon RX 7900 XT
      RDNA 3157.0
    • Radeon RX 6950 XT
      RDNA 2124.0
  • < li class="chart__group"> CoD: Modern Warfare 2:

    • Radeon RX 7900 XTX
      RDNA 3139.0
    • Radeon RX 7900 XT
      RDNA 3117.0
    • Radeon RX 6950 XT
      RDNA 292.0
  • Cyberpunk 2077:
    • Radeon RX 7900 XTX
      RDNA 372.0
    • Radeon RX 7900 XT
      RDNA 360.0
    • Radeon RX 6950 XT
      RDNA 243.0
  • Watch Dogs: Legion:
    • Radeon RX 7900 XTX
      RDNA 3100.0
    • Radeon RX 7900 XT
      RDNA 385.0
    • Radeon RX 6950 XT
      RDNA 268.0

Unit: frames per second (FPS) 4K gaming with maximum details according to AMD (ray tracing, FSR on/off)

  • Resident Evil Village (Max RT, FSR on):
    • Radeon RX 7900 XTX
      RDNA 3201.0
    • Radeon RX 7900 XT
      RDNA 3171.0
    • Radeon RX 6950 XT
      RDNA 2146.0
  • Resident Evil Village (Max RT, FSR off):
    • < strong>Radeon RX 7900 XTX
      RDNA 3135.0
    • Radeon RX 7900 XT
      RDNA 3115.0
    • Radeon RX 6950 XT
      RDNA 294.0
  • Dying Light 2 (High RT, FSR on):
    • Radeon RX 7900 XTX
      RDNA 372.0
    • Radeon RX 7900 XT
      RDNA 364.0
    • Radeon RX 6950 XT
      RDNA 239.0
  • Dying Light 2 (High RT, FSR off):
    • Radeon RX 7900 XTX
      RDNA 324.0
    • Radeon RX 7900 XT
      RDNA 321.0
    • Radeon RX 6950 XT
      RDNA 212.0
  • Cyberpunk 2077 (Ultra RT, FSR on):
    • Radeon RX 7900 XTX
      RDNA 362.0
    • Radeon RX 7900 XT
      RDNA 357.0
    • Radeon RX 6950 XT
      RDNA 242.0
  • Cyberpunk 2077 (Ultra RT, FSR off): < ul class="chart__group-body">
  • Radeon RX 7900 XTX
    RDNA 321.0
  • Radeon RX 7900 XT
    RDNA 318.0
  • Radeon RX 6950 XT
    RDNA 213.0
  • Hitman 3 (Ultra RT, FSR on):
    • Radeon RX 7900 XTX
      RDNA 389.0
    • Radeon RX 7900 XT
      RDNA 381.0
    • < li class="chart__row">Radeon RX 6950 XT
      RDNA 257.0

  • Hitman 3 (Ultra RT, FSR off):
    • Radeon RX 7900 XTX
      RDNA 338.0
    • Radeon RX 7900 XT
      RDNA 334.0
    • Radeon RX 6950 XT
      RDNA 223.0
  • Unit: Frames per second (FPS)

    In the benchmarks with activated ray tracing, however, it becomes clear: Even with RDNA 3, some games are played in 4K with maximum details and a high ray tracing level remain unplayable, as the benchmarks with Cyberpunk 2077 or Dying Light 2 reveal. Only the additional use of the FSR upsampling technology ensures playable frame rates.

    Such scenarios are considered the Achilles' heel of the new Radeon generation. In terms of ray tracing, Nvidia is expected to remain in the lead.

    “8K” is not real 8K UHD

    Be careful with the “8K” benchmarks. In the footnotes, AMD mentions a resolution of 7,680 × 2,160 pixels, which can be described as “8K UltraWide” like the upcoming Samsung monitor with DP2.1, but not classic 8K UHD with 7,680 × 4,320 and thus twice the number of pixels means.

    Starting shot in December

    On December 13, 2022 AMD officially launched the Radeon RX 7900 and RX 7900 XTX. Only then will the first independent tests provide an accurate picture.

    ComputerBase has received information about this article from AMD under the NDA. The only specification was the earliest possible publication date.


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