Bykski Full Coverage GPU Water Block and Backplate For ASUS RTX 3080 / 3090 STRIX (N-AS3090STRIX-X-V4)
Includes CNC backplate
In this gallery — tap to open full size

Bykski Full Coverage GPU Water Block and Backplate For ASUS RTX 3080 / 3090 STRIX (N-AS3090STRIX-X-V4)

N-AS3090STRIX-X-V4 Pre-order
$233.99USDFree shipping, lower 48

US import duties and tariffs are included in every price.

Ships directly from our Idaho inventory. You avoid overseas sellers, processing delays, international shipping, customs hold-ups and additional fees.
Pre-order — normally stocked
Expect dispatch in about 20 business days
Latest 24 business days. Cancel any time before it ships for a full refund.
A regular catalogue item — we're between shipments. Your order is filled before any stock goes back on the website.
Fits these 6 boards, and only these

This part is machined for the 6 boards listed below — nothing else. Board revisions and partner designs differ, so match your exact model against the list before you order.

  • ASUS NVIDIA 3090 - ROG STRIX GEFORCE RTX 3090 24GB
  • ASUS NVIDIA 3090 - ROG STRIX GEFORCE RTX 3090 24GB EVA OC
  • ASUS NVIDIA 3080 - ROG STRIX GEFORCE RTX 3080 10GB
  • ASUS NVIDIA 3080 - ROG STRIX GEFORCE RTX 3080 12GB OC
  • ASUS NVIDIA 3080 - ROG STRIX LC GEFORCE RTX 3080 Ti 12GB
  • ASUS NVIDIA 3080 - ROG STRIX GEFORCE RTX 3080 Ti 12GB OC
Not sure? Send us your model/part number and we'll confirm it for you.
Not ready to pre-order?
Building your first loop? Plan the rest of it
Why buy it here
US warranty, handled in Boise
Claims are settled here, by the people who sold it to you.
Exclusive US distributor
The official US source for Bykski, so every part is genuine.

What installing it actually involves

Three steps, in the order that matters. The one people get wrong is the first.

01
Confirm the hardware

This block fits 6 boards:

  • ASUS NVIDIA 3090 - ROG STRIX GEFORCE RTX 3090 24GB
  • ASUS NVIDIA 3090 - ROG STRIX GEFORCE RTX 3090 24GB EVA OC
  • ASUS NVIDIA 3080 - ROG STRIX GEFORCE RTX 3080 10GB
  • ASUS NVIDIA 3080 - ROG STRIX GEFORCE RTX 3080 12GB OC
  • ASUS NVIDIA 3080 - ROG STRIX LC GEFORCE RTX 3080 Ti 12GB
  • ASUS NVIDIA 3080 - ROG STRIX GEFORCE RTX 3080 Ti 12GB OC

Match your exact model — not the family.

02
Mount it dry

Thermal interface material as supplied. Even mounting pressure, correct bracket orientation, no over-torquing.

03
Leak test before power

Run the pump on a bench supply with the rest of the system unpowered. 24 hours is the standard, an hour is the minimum.

Water cooling parts are designed for self-installation by qualified users. Damage caused by installation error isn't covered — if you're unsure at any step, ask before you power the loop.

About this part

This full coverage block directly cools the video cards core (GPU), graphics memory (RAM), and voltage regulator modules (VRM). By directly cooling these components, you can achieve great temperatures along with the ability to reach higher overclocks or extend the overall lifespan of your card by running at below factory temps.

The block is constructed of high-purity copper that is nickel electroplated to prevent oxidation. A high-flow design is used to allow multiple blocks to run in series. Top and bottom ports can be used to configure parallel or serial designs in multi-block setups.

In the box
  • 1x Full Coverage GPU Water Block
  • 1x Backplate
  • 2x Stop Fitting
  • 1x Mounting Hardware
  • Thermal grease
  • 1x 5v A-RGB (RBW) Light
  • (Warning: Addressable RGB (RBW) is 5V and is ONLY compatible with Addressable RGB (RBW) components. RGB is 12V and is ONLY compatible with RGB components. Mix and match will NOT work and will cause damage.
If the gallery shows a parts diagram, that diagram is the source of truth for what ships.
Datasheet
Block MaterialNickel Electroplated High Purity Copper / Acrylic
Backplate MaterialBlack Anodized Aluminum (not in contact with coolant)
SKUN-AS3090STRIX-X-V4

What buyers said

Left by people who bought this part here. Compatibility reports are the useful ones — if you fitted it, say which board.

Customer Reviews

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Questions people ask about this part

Answers specific to N-AS3090STRIX-X-V4. If yours isn't here, ask — we'd rather talk you out of the wrong part than sell you one.

What does this part fit?

It is machined for 6 boards:

  • ASUS NVIDIA 3090 - ROG STRIX GEFORCE RTX 3090 24GB
  • ASUS NVIDIA 3090 - ROG STRIX GEFORCE RTX 3090 24GB EVA OC
  • ASUS NVIDIA 3080 - ROG STRIX GEFORCE RTX 3080 10GB
  • ASUS NVIDIA 3080 - ROG STRIX GEFORCE RTX 3080 12GB OC
  • ASUS NVIDIA 3080 - ROG STRIX LC GEFORCE RTX 3080 Ti 12GB
  • ASUS NVIDIA 3080 - ROG STRIX GEFORCE RTX 3080 Ti 12GB OC

Bykski cut these to a specific hardware layout, so match your exact model rather than the family before ordering. Part number N-AS3090STRIX-X-V4.

Is it in stock, and when will it ship?
It is a normally stocked item currently on pre-order — we are between shipments. Orders dispatch from Boise, Idaho within 20 business days, and pre-orders are filled before any stock goes back on the website.
Can I cancel my pre-order?
Yes. A pre-order can be cancelled any time before it ships, for a full refund. Nothing is committed until it leaves Boise.
Will I pay import duties or customs charges on delivery?
Not on a US order. US import duties and tariffs are already included in the price, so nothing is collected at the door and there is no brokerage fee. Orders shipped outside the US may owe that country's customs fees and duties.
Who handles the warranty?
BYKSKI.US, the exclusive US distributor, from Boise, Idaho. Claims are handled domestically rather than returned to an overseas factory. Damage caused by installation error is not covered.
Is shipping free?
Yes — shipping is included at this price for addresses in the lower 48 US states.
Are printed instructions included?
No printed manual is included. Installation references are in the product gallery images, and the install guides on this site cover the process step by step.
Do I need anything else to use it?
A water block is one component of a loop: you also need a pump, a radiator, fittings, tubing and coolant. If you are starting from nothing, an AIO or a distro-plate kit is the shorter route — ask and we will spec it.

Ask us before you order

Send your exact hardware model and we'll confirm the right part before you spend $233.99 — or tell you honestly that this isn't the one.

Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used.

Ask about compatibility