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AMD Radeon RX 9070vsIntel Arc B580: Spec Comparison

The AMD Radeon RX 9070 and Intel Arc B580 are modern desktop graphics cards built for gaming and hardware video encoding. They differ substantially in launch price, memory capacity, and raw processing muscle, allowing buyers to choose based on budget and graphics demands.

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Intro

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Best for

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Biggest differences

  • Launch price

    Intel Arc B580 leads

    2.2×

    lower is better

    • AMD Radeon RX 9070549 USD
    • Intel Arc B580249 USD

  • PCIe lanes

    AMD Radeon RX 9070 leads

    2×

    higher is better

    • AMD Radeon RX 907016 lanes
    • Intel Arc B5808 lanes

  • Last-level cache

    AMD Radeon RX 9070 leads

    3.56×

    higher is better

    • AMD Radeon RX 907064 MB
    • Intel Arc B58018 MB

  • Memory bandwidth

    AMD Radeon RX 9070 leads

    +40%

    higher is better

    • AMD Radeon RX 9070640 GB/s
    • Intel Arc B580456 GB/s

Where each one wins

  • AMD Radeon RX 9070

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

  • Intel Arc B580

    • Launch price
    • Boost clock
    • Board power
    • Recommended PSU

What both have

  • Memory typeGddr6
  • Power connectors8-pin
  • Max displays4 displays
  • Hardware encodeH.264, HEVC, AV1

Every spec

Red marks the better value in each row.

SpecAMD Radeon RX 9070Intel Arc B580
Overview

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Overview specs

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Release date2025-032024-12
Launch price549 USD1249 USD
Graphics chip

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Graphics chip specs

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ArchitectureRdna 4Xe2
Shader cores3,584 cores2,560 cores
Boost clock2,520 MHz22,670 MHz
Base clockNot publishedNot published
FP32 compute36.1 TFLOPSNot published
Memory

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Memory specs

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Video memory16 GB12 GB
Memory typeGddr6Gddr6
Memory bus width256 bit192 bit
Memory bandwidth640 GB/s456 GB/s
Memory speed20 Gbps19 Gbps
Last-level cache64 MB18 MB
Power

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Power specs

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Board power220 W3190 W
Recommended PSU650 W600 W
Power connectors8-pin48-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 version2.1a52.16
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, AV17
Video encodersNot published2 encoders
Size

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Size specs

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Card lengthNot published272 mm
Card heightNot published115 mm8
Slot widthNot published2 slots
Notes on 8 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 9070, DisplayPort version: Club386 lists the DP 2.1a link rate as UHBR13.5; UHBR20 is not supported.
  6. 6Intel Arc B580, DisplayPort version: Intel rates the DisplayPort outputs at DP 2.1 up to UHBR 13.5 (second output listed at UHBR 10).
  7. 7Intel Arc B580, Hardware encode: Intel's spec table also lists H.264 and H.265 (HEVC) hardware encode as Yes.
  8. 8Intel Arc B580, Card height: Intel publishes this dimension as the card's 'Width' (115 mm) alongside the 272 mm length.

Price and Value

The Intel Arc B580 launches at $249, making it significantly more affordable for budget-conscious builders. In contrast, the AMD Radeon RX 9070 carries a $549 starting MSRP at launch, though partner models may cost more since AMD sells no reference card.

That higher investment for the RX 9070 brings more robust hardware specs, but the Arc B580 delivers entry-level desktop graphics at less than half the cost.

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Price and Value

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Performance and Compute

Under the hood, the RX 9070 deploys 3,584 shader cores running on the Rdna 4 architecture to drive demanding visual workloads. The Arc B580 relies on 2,560 cores using the Xe2 architecture, supplemented by a slightly higher boost clock of 2,670 MHz compared to the rival's 2,520 MHz peak 'up to' boost.

For heavy compute tasks, the AMD card outputs 36.1 TFLOPS of FP32 compute power, giving it more raw throughput for complex rendering and gaming scenes.

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Performance and Compute

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Memory and Bandwidth

Memory subsystem specs heavily favor the AMD card, which equips 16 GB of Gddr6 video memory across a wide 256-bit memory bus. This combination pushes a memory bandwidth of 640 GB/s at 20 Gbps, backed by a 64 MB last-level cache.

The Intel competitor features 12 GB of Gddr6 memory on a 192-bit memory bus, delivering 456 GB/s of bandwidth at 19 Gbps with an 18 MB last-level cache. The larger frame buffer and wider bus on the RX 9070 handle high-resolution textures and dense asset loading much more comfortably.

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Memory and Bandwidth

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Power and Connectivity

Running the RX 9070 requires a beefier setup, demanding a 650 W recommended PSU and drawing a board power of 220 W through two 8-pin PCIe power connectors. The Arc B580 needs a modest 600 W recommended PSU and draws 190 W of board power using a single 8-pin connection.

For system connectivity, the AMD card leaps ahead with PCIe 5.0 across 16 lanes and modern DisplayPort 2.1a outputs, whereas the Intel option utilizes PCIe 4.0 across 8 lanes and DisplayPort 2.1 outputs.

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Power and Connectivity

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The Verdict

Buy the AMD Radeon RX 9070 if you need massive memory bandwidth, PCIe 5.0 speeds, and high-end compute power. Buy the Intel Arc B580 if you want an affordable entry-level graphics card with a lower power draw and friendly $249 price tag.

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Verdict

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Where to buy

FAQ

What power supply do I need for these graphics cards?

The RX 9070 requires a 650 W recommended PSU, while the Arc B580 requires a 600 W recommended PSU.

How much video memory do they have?

The AMD card comes with 16 GB of Gddr6 video memory, and the Intel card features 12 GB of Gddr6 video memory.

What video encoder formats do they support?

Both graphics cards support hardware encoding for H.264, HEVC, and AV1 formats.

What are the physical dimensions of the Intel card?

The Intel Arc B580 measures 272 mm in length, 115 mm in width, and takes up 2 slots.

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FAQ

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