Bykski Full Coverage GPU Water Block and Backplate For Gigabyte RTX 4090 Windforce 24G (N-GV4090WF-X)
US import duties and tariffs are included in every price.
What installing it actually involves
Three steps, in the order that matters. The one people get wrong is the first.
This block fits 2 boards:
- GIGABYTE NVIDIA 4090 - GEFORCE RTX 4090 WINDFORCE 24G
- GIGABYTE NVIDIA 4090 - AORUS GEFORCE RTX 4090 XTREME WATERFORCE 24G
Match your exact model — not the family.
Thermal interface material as supplied. Even mounting pressure, correct bracket orientation, no over-torquing.
Run the pump on a bench supply with the rest of the system unpowered. 24 hours is the standard, an hour is the minimum.
About this part
This N-N-GV4090WF-X full-coverage block directly cools the video card core (GPU), graphics memory (RAM), and voltage regulator modules (VRM). By directly cooling these components, you can achieve great temperatures and reach higher overclocks while extending the overall lifespan of your card by running at lower temperatures.
A high-flow design allows multiple blocks to run in series. The block can be configured as parallel or serial designs. In multi-block setups, an additional bridge may be needed, depending on your setup.
- GPU Water Cooling Block
- Installation Hardware, including thermal paste
- 5v Addressable RGB (RBW)
- (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.
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
Good looking water block at first. I did burn out the rgb twice and had to pay for more. My 3rd set is on its way out again(even my pump/res burned out the lights as well. Same brand). The corrosion on the plating is extremely bad. I’ve only ever ran water through it and no crazy colors or dyes. Of course they didn’t offer me a solutions to fix or replace the corroded parts. I now run a filter in my loop to catch the rust and plating particles. I have to clean it out every 3 months. It makes my build look really ugly.
If you assemble this without filing of the front standoff of the waterblock, this standoff pushes the **** that attaches the card bracket to the card itself and dangerously bends the card PCB. Even after filing I still can't achieve good attachment of the waterblock to the GPU and my delta between water and GPU is about 50C now under FurMark load. More filing required.
Great Item. Was looking to replace the AIO for my Aorus Water force 4090 and did not see a single water block that would fit. Seen a Reddit page saying the WindForce and Water force 4090 pcb were very similar. Went out on a limb and purchased this product. Received the item and was packaged well for that long trip to states. Item looked very nice and protective wrap covered the item. I had already disassembled my Water force which took about 10-15 minutes. Installed the block to pcb in accordance with the instructions that came with email and posting on the page. Came with all the thermal pads and small tube of paste. I had just recently opened some thermal grizzly so that is what i actually used along with provided thermal pads. All in all took about 15 minutes. Once i got installed on the system and water flowing, I did some stress testing to make sure everything was good. Thermals on my board were a little better and i used the auto overclock in Gigabyte Control Center to push the card. My board was already water cooled so i kinda figured it was going to be very similar to my previous thermals. Also I have a way bigger pump and radiator set up then the AIO that comes with water force. I am extremely happy with my results and overall satisfied with the purchase. I will say a couple of things which I don't like but are not unbearable the Pcb is not fully covered by the Acrylic which is also due to the fact that my board is a wateforce not a windforce. When installing backplate i did have to remove one of the standoffs from pcb once again possible due to my board not actually being a windforce.
Looks good RGB/Clear Acrylic. Packaged Well.
Idles at 32c. Gaming never breaks 57c. Ran Port Royal 5x and the nighest it got was 68c. Just as good, if not better than all the other brands. Did drop my temps by 10-15c depending on the task.
Questions people ask about this part
Answers specific to N-GV4090WF-X. 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 2 boards:
- GIGABYTE NVIDIA 4090 - GEFORCE RTX 4090 WINDFORCE 24G
- GIGABYTE NVIDIA 4090 - AORUS GEFORCE RTX 4090 XTREME WATERFORCE 24G
Bykski cut these to a specific hardware layout, so match your exact model rather than the family before ordering. Part number N-GV4090WF-X.
Is it in stock, and when will it ship?
Can I return it if it turns out not to fit?
Will I pay import duties or customs charges on delivery?
Who handles the warranty?
Is shipping free?
Are printed instructions included?
Do I need anything else to use 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.