Bykski Full Coverage GPU Water Block and Backplate for Gigabyte RTX 3080/3090 (N-GV3090GMOC-X)

Availability : In stock, In Boise ID USA Pre-Order Now Out of stock
$179.99 USD
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The Bykski Full Coverage GPU Water Block and Backplate for Gigabyte RTX 3080/3090 is a work of art! This full coverage block directly cools the video cards core (GPU), graphics memory (RAM) as well as the voltage regulator modules (VRM). By directly cooling these components you can achieve great temperatures! Along with these temperatures comes 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 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 set ups.

  • Finest Craftsmanship
  • Designed to Fit Standard G1/4 Thread Fittings
  • SLI/Crossfire Compliant
  • Model: N-GV3090GMOC-X
  • Brand: Bykski
  • Block Material: Electroplated High Purity Copper / Clear Acrylic
  • (Including but not limited to the following models)
  • Gigabyte RTX 3080 GAMING OC 3X 10G
  • Gigabyte RTX 3080 EAGLE OC 10G
  • Gigabyte RTX 3080 VISION OC 10G
  • Gigabyte RTX 3090 GAMING OC 24G
  • Gigabyte RTX 3090 EAGLE OC 24G
  • Gigabyte RTX 3090 VISION OC 24G
  • Please check over the entire PCB picture after narrowing your selection to ensure compatibility. If you have any questions, please contact support for confirmation.
  • Compatibility based on these circuit board designs only
  • Fittings: G 1/4in. Thread
Parts Included
  • 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.

This is a repair or replace only item. Returns not accepted on compatibility issues or block has had water/fluid run through it.

Manufacturer reserves right to alter block design to expand compatibility. Delivered item may not 100% match pictured item. Product does NOT come with English instructions.

Not responsible for any damage caused by or when using this product. Please use at your own risk.

Reviews | Q&A

Customer Reviews

Based on 8 reviews
It fit my Gigabyte Geforce RTX 3080 Gaming OC Waterforce V2. 10gb

I was very skeptical at first but very happy and satisfied with the purchase.

I didn't use any of the little plastic spacers sent with this block. No real instructions so i based the re installation based off of mostly how the original water block came off! But worked out great!

Very happy looks great even without the block and cpu block rgb inactive! Anyway so far stays under 40°C on average while gaming so i am very happy to keep my investment going! I still have yet to figure out the RGB out and for the CPU On Fire waterblock as well but both are fantastic and fit the build perfectly!

(Older components but first loop to give it a face lift!)

Mobo - z270e strix gaming
CPU - i76700k
GPU - Gigabyte Geforce RTX 3080 Gaming OC Waterforce V2. 10gb
Ram - Corsair Vengeance (2x16) 32gb
Memory - Samsung Evo 990 2tb


Matt J.
Works like a champ

I replaced the stock water cooler for my GPU and this one has a noticable change in temps!

Ryan R.
Almost perfect

I purchased this for a Gigabyte rtx 3080TI oc. The block is 90% accurate for the card but leaves a few areas that were covered by the stock heatsink exposed (does not touch water block.) Otherwise my temps are good and installation was easy. 4/5 stars.

Saxe S.

I am looking so forward to this becuase i had a front covered one, but it needed to be repaired and then the repair shop lost some screws so i can't put it together again.
This will hopefully take care of the little toasty memory on the back. 89 degrees is beginning to get a little toasty.
I hopw you all get what you are here for and whish you all the best.

Best Regards

Incorrect Thermal Pads - No Instructions Provided

So, this waterblock looks very nice, however it was not making proper contact with the GPU at all, due to the thermal pads being too thick. I was forced to re-use thermal pads for the time being from my stock cooler to try to get this waterblock to work, even then, my temps still run into the 80's. The thermal pads werent cut, all just default length. When buying a previous waterblock with a competitor, they had sent me 3 different baggies of 3 separate thermal pads, already pre-cut to fit perfectly, and instructions showing where to put each size of pad. This was not the case with this waterblock unfortunately. Going to try to reach out to customer support to get this resolved.

Using a Gigabyte 3080 Vision OC.

Return/Exchange/Shipping Policy

Return Policy for New Products:

For international customers please reference this page for duties/tax information.

Products returned for credit must be received within 30 days of the invoice, and a 15% restocking fee will apply. If your order was sent using "free shipping," the amount for outbound shipping will be deducted from your refund. If 30 days have passed since your purchase, unfortunately, we can’t offer you a refund or exchange.

All returned items must be in like new condition with all related parts including screws, manuals, etc. If you have lost, thrown away, scratched or opened sealed boxes or bags – a higher restock fee may apply upwards of 50%.

If a customer is misleading about the defect and evidence of incorrect install/use or tampering has occurred, a higher restock fee may be assessed or the return may be completely denied. A qualified technician will test each returned product for defects. will not assess a restocking fee for defective products.

Sale items  or Pre-owned (if applicable)
Only regular priced new items may be refunded or returned, unfortunately sale items and Used/Pre-owned/Open box items cannot be refunded.

Returns will not be accepted without an RMA number provided from 

Return Shipping

Customers are responsible for ALL return shipping charges on merchandise for any reason. Unless otherwise noted, shipping on products and returns is non-refundable, and returning a product comes at the customer's expense. The customer will be responsible for paying for shipping products/orders back to For no reason, do we refund the outbound shipping cost. If your order was sent using "free shipping," the amount for outbound shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

Please ship using a carrier that provides a tracking number, insurance and proof of delivery. is not responsible for return items lost by the carrier. Valid proof of delivery must include the receipt signature of an authorized employee.

Erroneous Shipments
In the event an incorrect item is shipped in your order, the correct item / replacement will be shipped using the same method as the original order.

Damaged Items
:  All packages are fully insured at no additional charge.

If you receive a damaged package, you must notify us within 48 hours of receipt. Sending back damaged merchandise voids the shipping insurance and no credit will be given. Damaged packages must be held for five days with original packaging for carrier inspection.

Shipment Refusal

Shipping Policy

Selecting overnight shipping method will not ensure that your order ships same day and is not guaranteed.


Once an order is placed on our e-commerce website, it cannot be canceled/changed or held. This is because our fully automated systems immediately start processing the order, which cannot be stopped or reversed. Therefore, we advise customers to double-check their orders before making a purchase.

Additionally, we would like to emphasize that our e-commerce website ships 98.5% of orders on the same day they are placed by 2:00 pm MST. Allowing cancellations after an order is placed would significantly slow down our shipping process and potentially affect the delivery times for other customers.

We understand that it can be frustrating to be unable to cancel an order, but we ask for your understanding in this matter. By adhering to our cancellation policy, we can ensure that our automated systems and shipping processes continue running smoothly, allowing us to provide fast and efficient service to all our customers.

We understand that sometimes mistakes can happen, and customers may accidentally order the wrong item or change their minds about a purchase. In such cases, we suggest that customers consider our return policy instead.


Most of the time pre-ordered items are newly released products and may be subject to price increases and feature changes as more information is provided to us the reseller. 

The item's packaging (dimensions, weight, additional handling, shipping rate changes), delivery schedule and included options are subject to change and therefore the original estimated price listed and delivery date may change once the final information is received. As we get more information about the packaging, pricing, and inclusions, the final features/pricing may change before fulfillment. 

In the event of a price change or feature change the customer will be notified immediately and will be given the option to cancel the order, change the order or pay additional funds to cover the increases.