KurabeDojoThe comparison dojo

Compare · 2 products compared

NVIDIA GeForce RTX 4080 SupervsAMD Radeon RX 7900 XTX: Head-to-Head

Priced equally at $999, the NVIDIA GeForce RTX 4080 Super and the AMD Radeon RX 7900 XTX target high-end gaming rigs with very different strengths. The NVIDIA card emphasizes advanced memory speed and power efficiency, while the AMD alternative relies on a massive pool of video memory and higher raw compute throughput.

Report a problem

Intro

What is the problem?

eBay prices refresh hourly — check the listing before you buy. We may earn a commission.

Report a problem

Best for

What is the problem?
Which products? Tick all that apply, or none if you are not sure.

Biggest differences

  • Shader cores

    NVIDIA GeForce RTX 4080 Super leads

    +67%

    higher is better

    • NVIDIA GeForce RTX 4080 Super10,240 cores
    • AMD Radeon RX 7900 XTX6,144 cores

  • Video memory

    AMD Radeon RX 7900 XTX leads

    +50%

    higher is better

    • NVIDIA GeForce RTX 4080 Super16 GB
    • AMD Radeon RX 7900 XTX24 GB

  • Memory bus width

    AMD Radeon RX 7900 XTX leads

    +50%

    higher is better

    • NVIDIA GeForce RTX 4080 Super256 bit
    • AMD Radeon RX 7900 XTX384 bit

  • Memory bandwidth

    AMD Radeon RX 7900 XTX leads

    +30%

    higher is better

    • NVIDIA GeForce RTX 4080 Super736 GB/s
    • AMD Radeon RX 7900 XTX960 GB/s

Where each one wins

  • NVIDIA GeForce RTX 4080 Super

    • Shader cores
    • Boost clock
    • Memory type
    • Memory speed
    • Board power
    • Recommended PSU
    • HDMI version
    • DisplayPort outputs

  • AMD Radeon RX 7900 XTX

    • FP32 compute
    • Video memory
    • Memory bus width
    • Memory bandwidth
    • Last-level cache
    • DisplayPort version
    • Card length
    • Slot width

What both have

  • Launch price999 USD
  • PCIe version4.0
  • HDMI outputs1 ports
  • Max displays4 displays
  • Video encoders2 encoders

Every spec

Red marks the better value in each row.

SpecNVIDIA GeForce RTX 4080 SuperAMD Radeon RX 7900 XTX
Overview

Report a problem

Overview specs

What is the problem?
Which specs? Tick all that apply, or none if you are not sure.
Which products? Tick all that apply, or none if you are not sure.
Release date2024-012022-121
Launch price999 USD999 USD2
Graphics chip

Report a problem

Graphics chip specs

What is the problem?
Which specs? Tick all that apply, or none if you are not sure.
Which products? Tick all that apply, or none if you are not sure.
ArchitectureAda lovelaceRdna 3
Shader cores10,240 cores6,144 cores
Boost clock2,550 MHz2,500 MHz3
Base clock2,290 MHzNot published
FP32 compute52 TFLOPS61.4 TFLOPS
Memory

Report a problem

Memory specs

What is the problem?
Which specs? Tick all that apply, or none if you are not sure.
Which products? Tick all that apply, or none if you are not sure.
Video memory16 GB24 GB
Memory typeGddr6xGddr6
Memory bus width256 bit384 bit
Memory bandwidth736 GB/s960 GB/s4
Memory speed23 Gbps20 Gbps
Last-level cache64 MB96 MB
Power

Report a problem

Power specs

What is the problem?
Which specs? Tick all that apply, or none if you are not sure.
Which products? Tick all that apply, or none if you are not sure.
Board power320 W355 W
Recommended PSU750 W5800 W6
Power connectors12V-2x678-pin8
Interface

Report a problem

Interface specs

What is the problem?
Which specs? Tick all that apply, or none if you are not sure.
Which products? Tick all that apply, or none if you are not sure.
PCIe version4.04.0
PCIe lanesNot published16 lanes
Display outputs

Report a problem

Display outputs specs

What is the problem?
Which specs? Tick all that apply, or none if you are not sure.
Which products? Tick all that apply, or none if you are not sure.
HDMI version2.1a2.1
DisplayPort version1.4a2.19
HDMI outputs1 ports1 ports
DisplayPort outputs3 ports2 ports
Max displays4 displays4 displays
Video engine

Report a problem

Video engine specs

What is the problem?
Which specs? Tick all that apply, or none if you are not sure.
Which products? Tick all that apply, or none if you are not sure.
Hardware encodeAV1H.264, HEVC, AV110
Video encoders2 encoders2 encoders11
Size

Report a problem

Size specs

What is the problem?
Which specs? Tick all that apply, or none if you are not sure.
Which products? Tick all that apply, or none if you are not sure.
Card length304 mm287 mm
Card height137 mmNot published
Slot width3 slots2.5 slots
Notes on 11 values — test conditions and caveats
  1. 1AMD Radeon RX 7900 XTX, Release date: First retail sale December 13, 2022; announced November 3, 2022.
  2. 2AMD Radeon RX 7900 XTX, Launch price: AMD's launch figure is the SEP (suggested e-commerce price); partner cards often sold higher.
  3. 3AMD Radeon RX 7900 XTX, Boost clock: Boost is a burst maximum; typical gaming runs near the 2300 MHz game clock.
  4. 4AMD Radeon RX 7900 XTX, Memory bandwidth: AMD also quotes 3500 GB/s 'effective' bandwidth with Infinity Cache; 960 GB/s is the raw VRAM figure.
  5. 5NVIDIA GeForce RTX 4080 Super, Recommended PSU: NVIDIA's 750 W minimum assumes a PC with a Ryzen 9 5900X; needs vary by configuration.
  6. 6AMD Radeon RX 7900 XTX, Recommended PSU: AMD's 800W minimum assumes a Ryzen 9 5900X-class system; other builds may need more headroom.
  7. 7NVIDIA GeForce RTX 4080 Super, Power connectors: Card takes a 16-pin 12V-2x6 connector; a 3x PCIe 8-pin adapter ships in the box for PSUs without a PCIe Gen 5 cable.
  8. 8AMD Radeon RX 7900 XTX, Power connectors: The reference card uses two 8-pin connectors.
  9. 9AMD Radeon RX 7900 XTX, DisplayPort version: DisplayPort 2.1 runs UHBR 13.5, up to 54Gbps of display link bandwidth per AMD.
  10. 10AMD Radeon RX 7900 XTX, Hardware encode: AMD's spec table marks 4K H264 Encode, H265/HEVC Encode and AV1 Encode all as Yes.
  11. 11AMD Radeon RX 7900 XTX, Video encoders: AMD describes a Dual Media Engine, i.e. two encode/decode engines, capable of simultaneous 8K60 HEVC streams.

Performance and Compute

The AMD Radeon RX 7900 XTX pushes ahead in raw floating-point operations with 61.4 TFLOPS, beating the NVIDIA GeForce RTX 4080 Super and its 52 TFLOPS. However, the NVIDIA entry counters with 10,240 shader cores and a faster 2,550 MHz boost clock to drive demanding frames.

In daily use, this means both options handle heavy graphics workloads easily, though they approach rendering from different architectural angles. Buyers focused on raw compute muscle lean toward the AMD card.

Report a problem

Performance and Compute

What is the problem?

Memory and Bandwidth

The AMD Radeon RX 7900 XTX equips a generous 24 GB of video memory over a wide 384-bit bus, securing 960 GB/s of raw bandwidth. This expansive setup accommodates high-resolution texture packs and extreme modding scenarios much better than smaller pools.

Meanwhile, the NVIDIA GeForce RTX 4080 Super opts for 16 GB of Gddr6x memory running at a swift 23 Gbps. While its capacity is lower, its superior memory speed and 64 MB of last-level cache optimize data delivery for standard gaming loads.

Report a problem

Memory and Bandwidth

What is the problem?

Power and System Requirements

Running the NVIDIA GeForce RTX 4080 Super demands less energy, requiring a modest 320 W board power and a 750 W minimum power supply unit. It adopts the modern 12V-2x6 power connector, though a 3x PCIe 8-pin adapter is included in the box.

By contrast, the AMD Radeon RX 7900 XTX draws 355 W and calls for an 800 W power supply while relying on two traditional 8-pin connectors. Systems built around the AMD card will need more electrical headroom and proper case power routing.

Report a problem

Power and System Requirements

What is the problem?

Displays and Dimensions

The AMD Radeon RX 7900 XTX offers DisplayPort 2.1 support capable of running UHBR 13.5 at up to 54Gbps, paired with two DisplayPort outputs and one HDMI port. Its physical footprint measures 287 mm in length across a 2.5-slot width.

On the other side, the NVIDIA GeForce RTX 4080 Super features three DisplayPort outputs and one HDMI 2.1a port, managing up to four displays total. It stretches slightly longer at 304 mm and requires a full 3-slot width inside the chassis.

Report a problem

Displays and Dimensions

What is the problem?

The Verdict

Buy the NVIDIA GeForce RTX 4080 Super if you want lower power draw, faster memory speed, and efficient 3-slot cooling. Buy the AMD Radeon RX 7900 XTX if you need massive 24 GB video memory, higher raw compute, and DisplayPort 2.1 connectivity.

Report a problem

Verdict

What is the problem?

Where to buy

  • NVIDIA GeForce RTX 4080 Super

    Best for Builders prioritizing power efficiency, faster memory speed, and HDMI 2.1a.

    View on eBay · $1,149.99

  • AMD Radeon RX 7900 XTX

    Best for Users wanting maximum video memory capacity, raw compute, and DisplayPort 2.1.

    View on eBay · $1,515.05

FAQ

What power supply do these graphics cards require?

The NVIDIA GeForce RTX 4080 Super requires a 750 W minimum power supply, while the AMD Radeon RX 7900 XTX calls for an 800 W minimum.

How much video memory do they have?

The NVIDIA GeForce RTX 4080 Super comes with 16 GB of Gddr6x memory, whereas the AMD Radeon RX 7900 XTX features 24 GB of Gddr6 memory.

What physical size are the reference cards?

The NVIDIA card measures 304 mm long and takes up 3 slots, while the AMD card measures 287 mm long and spans 2.5 slots.

Do both cards support AV1 hardware encoding?

Yes, both graphics cards include hardware encoding support for AV1 video streams.

Report a problem

FAQ

What is the problem?

Spotted something wrong? Tap the next to any section or spec group to let us know. Every report is read.