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NVIDIA GeForce RTX 5090vsIntel Arc B580: The Ultimate GPU Showdown

These graphics cards offer advanced hardware encode capabilities and multi-display output support. Choosing between them comes down to a massive divide in processing capability, physical footprint, power requirements, and cost.

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Intro

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Best for

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Biggest differences

  • Shader cores

    NVIDIA GeForce RTX 5090 leads

    8.5×

    higher is better

    • NVIDIA GeForce RTX 509021,760 cores
    • Intel Arc B5802,560 cores

  • Launch price

    Intel Arc B580 leads

    8.03×

    lower is better

    • NVIDIA GeForce RTX 50901,999 USD
    • Intel Arc B580249 USD

  • Memory bandwidth

    NVIDIA GeForce RTX 5090 leads

    3.93×

    higher is better

    • NVIDIA GeForce RTX 50901,792 GB/s
    • Intel Arc B580456 GB/s

  • Board power

    Intel Arc B580 leads

    3.03×

    lower is better

    • NVIDIA GeForce RTX 5090575 W
    • Intel Arc B580190 W

Where each one wins

  • NVIDIA GeForce RTX 5090

    • Shader cores
    • Video memory
    • Memory type
    • Memory bus width
    • Memory bandwidth
    • Memory speed
    • Last-level cache
    • PCIe version
    • PCIe lanes
    • HDMI version
    • DisplayPort version
    • Video encoders

  • Intel Arc B580

    • Launch price
    • Boost clock
    • Board power
    • Recommended PSU
    • Card length
    • Card height

What both have

  • HDMI outputs1 ports
  • DisplayPort outputs3 ports
  • Max displays4 displays
  • Hardware encodeH.264, HEVC, AV1
  • Slot width2 slots

Every spec

Red marks the better value in each row.

SpecNVIDIA GeForce RTX 5090Intel Arc B580
Overview

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Overview specs

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Release date2025-012024-12
Launch price1,999 USD249 USD
Graphics chip

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Graphics chip specs

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ArchitectureBlackwellXe2
Shader cores21,760 cores2,560 cores
Boost clock2,410 MHz2,670 MHz
Base clock2,010 MHzNot published
FP32 compute104.8 TFLOPSNot published
Memory

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Memory specs

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Video memory32 GB12 GB
Memory typeGddr7Gddr6
Memory bus width512 bit192 bit
Memory bandwidth1,792 GB/s456 GB/s
Memory speed28 Gbps19 Gbps
Last-level cache96 MB18 MB
Power

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Power specs

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Board power575 W190 W
Recommended PSU1,000 W1600 W
Power connectors12V-2x68-pin
Interface

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Interface specs

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PCIe version5.04.0
PCIe lanes16 lanes8 lanes
Display outputs

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Display outputs specs

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HDMI version2.1b2.1
DisplayPort version2.1b22.13
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, AV14
Video encoders3 encoders2 encoders
Size

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Size specs

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Card length304 mm272 mm
Card height137 mm115 mm5
Slot width2 slots62 slots
Notes on 6 values — test conditions and caveats
  1. 1NVIDIA GeForce RTX 5090, Recommended PSU: NVIDIA's minimum for a PC with a Ryzen 9 9950X; it recommends a PCIe CEM 5.1 compliant PSU.
  2. 2NVIDIA GeForce RTX 5090, DisplayPort version: DisplayPort 2.1b at UHBR20 on all three DP outputs.
  3. 3Intel Arc B580, DisplayPort version: Intel rates the DisplayPort outputs at DP 2.1 up to UHBR 13.5 (second output listed at UHBR 10).
  4. 4Intel Arc B580, Hardware encode: Intel's spec table also lists H.264 and H.265 (HEVC) hardware encode as Yes.
  5. 5Intel Arc B580, Card height: Intel publishes this dimension as the card's 'Width' (115 mm) alongside the 272 mm length.
  6. 6NVIDIA GeForce RTX 5090, Slot width: The card is 2-slot, but NVIDIA's install guide asks for 3-slot (61 mm) case clearance.

Performance and Memory

The NVIDIA GeForce RTX 5090 utilizes the Blackwell architecture paired with 21,760 shader cores and 32 GB of GDDR7 video memory on a 512-bit bus. This configuration delivers extreme compute output for demanding workloads.

In contrast, the Intel Arc B580 relies on the Xe2 architecture with 2,560 shader cores and 12 GB of GDDR6 memory across a 192-bit bus. It operates at a higher boost clock of 2,670 MHz, but cannot match the raw throughput of its rival.

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Performance and Memory

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Power and System Requirements

Running the RTX 5090 demands serious infrastructure, requiring a 575 W board power and a recommended 1,000 W PSU using a 12V-2x6 connector. NVIDIA specifies that its 2-slot Founders Edition card still needs 3-slot case clearance.

The Arc B580 is far easier to integrate into standard builds, drawing 190 W and requiring a modest 600 W power supply with an 8-pin connector. It also features a more compact 2-slot physical build that measures 272 mm in length.

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Power and System Requirements

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Connectivity and Features

The RTX 5090 supports PCIe 5.0 across 16 lanes and includes three DisplayPort 2.1b outputs alongside a single HDMI 2.1b port, plus three hardware video encoders.

The Arc B580 relies on PCIe 4.0 across 8 lanes and provides three DisplayPort 2.1 outputs alongside one HDMI 2.1 port, backed by two hardware encoders.

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Connectivity and Features

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The Verdict

Buy the NVIDIA GeForce RTX 5090 if you need uncompromised processing power and massive memory capacity regardless of system cost. Buy the Intel Arc B580 if you want an affordable, power-efficient upgrade that fits standard cases.

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Verdict

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Where to buy

FAQ

What power supply do I need for the NVIDIA GeForce RTX 5090?

NVIDIA's minimum recommendation is a 1,000 W PSU for a PC with a Ryzen 9 9950X, requiring a PCIe CEM 5.1 compliant power supply.

How much video memory does the Intel Arc B580 have?

The Intel Arc B580 features 12 GB of GDDR6 video memory.

What is the launch price of the Intel Arc B580?

The Intel Arc B580 has a launch price of $249.

How many displays can the NVIDIA GeForce RTX 5090 support?

The RTX 5090 supports a maximum of 4 displays across its output ports.

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FAQ

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