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  3. Fans & PC Cooling
  4. DIY Cooling
  5. Bykski

  6. Item#: 9SIA9ABKHM7994

  • $306.99
  • Free 30-day Returns
  • Limit 99999 per customer.
    Sold by Direct from manufacturerTyler Direct
    Top Rated
    4.8 (264 seller ratings)

    Shipped by Direct from manufacturerTyler Direct

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    Tyler Direct
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    Byksk Armored GPU Water Block for ASUS ROG Astral Gaming RTX 5090 32GB

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    • FITS THE LISTED CARDS: Full-coverage block and backplate for the cards listed under Compatibility only. It is matched to those ASUS ROG Astral circuit boards, so check your exact model first.
    • FULL COVERAGE, COPPER BASE: One block cools the GPU chip, memory and power stages in a single pass. The base is T2 copper with electroless nickel plating under an acrylic top.
    • 5V ARGB LIGHTING: The block has built-in 5V addressable RGB lighting. It connects to a 5V 3-pin ARGB header on the motherboard or to an ARGB controller.
    • QUIET, VISIBLE LOOP: Swapping the stock cooler for a water block takes the card's fan noise out of the build. The clear acrylic top shows coolant moving through the block.
    • USA SUPPORT, FRIENDLY AND EXPERIENCED: Tyler Direct provides knowledgeable US-based support for troubleshooting and compatibility questions. Every purchase carries a 1-year warranty covering defects.
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    Overview
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    The Bykski N-AS5090ASTRAL-X is a full-cover water block with an aluminum backplate for the ASUS ROG Astral Gaming GeForce RTX 5090 32GB and the other ROG Astral RTX 5090 and RTX 5090D cards it fits. It replaces the stock air cooler so the card joins a custom water loop, running cooler and without fan noise. The clear acrylic top shows coolant moving through the block, and built-in 5V addressable lighting matches the rest of the build.

    Why it works

    • One block covers the GPU chip, memory and power stages.
    • Nickel-plated T2 copper cold plate with 56 micro-channels.
    • Clear PMMA acrylic top with an armored metal plate.
    • Frosted aluminum backplate included.

    Compatibility

    • ASUS NVIDIA 5090 - ROG ASTRAL GAMING GEFORCE RTX 5090 32GB
    • ASUS NVIDIA 5090 - ROG ASTRAL GAMING GEFORCE RTX 5090 32GB OC
    • ASUS NVIDIA 5090 - ROG ASTRAL LC GAMING GEFORCE RTX 5090 32GB
    • ASUS NVIDIA 5090 - ROG ASTRAL LC GAMING GEFORCE RTX 5090 32GB OC
    • ASUS NVIDIA 5090 - ROG ASTRAL GAMING GEFORCE RTX 5090D 32GB
    • ASUS NVIDIA 5090 - ROG ASTRAL GAMING GEFORCE RTX 5090D 32GB OC
    • ASUS NVIDIA 5090 - ROG ASTRAL LC GAMING GEFORCE RTX 5090D 32GB
    • ASUS NVIDIA 5090 - ROG ASTRAL LC GAMING GEFORCE RTX 5090D 32GB OC

    Specifications

    • Block Material: Nickel-plated T2 copper, acrylic top
    • Backplate Material: Aluminum (not in contact with coolant)
    • Dimensions: 283.021 x 136.25 x 30.10 mm
    • Port Thread: G1/4

    In the box

    • GPU water block with backplate: 1
    • 1.5mm thermal pads: 5
    • Thermal paste: 1
    • M2 set screws: 3
    • M2 x 9.5mm backplate screws: 8

    Installation

    • Remove the stock cooler from the card.
    • Clean the old thermal material from the GPU chip and board.
    • Set the block on the card and secure it with the included screws.
    • Attach the backplate with the eight M2 x 9.5mm backplate screws.
    • Connect the block's G1/4 ports to your loop and connect the lighting cable.

    Warnings

    Never power the card without the loop installed and the pump running.

    Thermal pads go where the block has raised contact points; the GPU chip takes thermal paste.

    Tighten the block's screws evenly and finger tight; over-tightening can crack the acrylic top.

    The lighting plugs into a 5V 3-pin addressable (ARGB) header or an ARGB controller only. A 12V 4-pin RGB header will damage it.

    No printed instructions are included; the installation illustration is in the product images.

    Self-installation by users experienced with PC water cooling. The manufacturer may update the design, so the product you receive may differ slightly from the images. The manufacturer is not liable for damage caused by misuse, improper installation, operation outside the stated specifications, or incompatible hardware or fluids. Installing and using this product means you accept these risks.

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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