Signature GPU Block - Kingpin 3090

The Optimus Signature Kingpin block is here! Our first ever Signature GPU block is designed to take advantage of the EVGA Kingpin's extreme performance. We've put everything into this block, and then some.

And you asked for the ultimate block with an active backplate to match, so we're launching the Kingpin block with an active backplate. This is no typical backplate, but a full-size waterblock that weighs more and performs better than typical front blocks.

The rear block is machined from solid copper and covers the entire PCB, not just the center VRAM area. Moreover, we've designed a full-length water channel across the entire backplate. Like our XL Heatsink backplate, the Rear Waterblock features a mega thermal pad to make contact with the entire PCB.
The solid copper rear waterblock is more substantial than even normal front water blocks. This allows the rear waterblock to wick away heat from every area on the back not just the VRAM, but also power delivery and back of the die itself. Like the front block, the areas over the VRAM are smooth and expansive, matching the diffuse heat profile of the VRAM.
DELIVERY ETA: 5-6 weeks
The Kingpin block is in the final stages of testing. For reference, the KP block will surpass our Absolute blocks. Right now, we're tweaking performance and will update with numbers soon.

Additionally, we're working on reducing weight. Our Absolute GPU blocks are heavy, and that's without a solid copper rear water block. This will be a heavy card so plan accordingly.

  • Simply order the nickel version for now -- you'll have color choices when your block ships.
  • We're doing something new for Kingpin. More to come soon :)
  • We're moving away from outside anodizing which can delay blocks by six weeks. This means we're building a finishing center in-house, which will be up and running for the Kingpin blocks.
  • Raw copper is still TBD, because of staining on the copper itself. We've sold blemish copper versions of the other blocks. For Kingpin, we're working on a new process but we are unsure at this time if it will be ready for production.
  • Full front coverage with machined block over power delivery
  • NV Link Compatible with correct cutouts for bridge
  • Stock KP OLED mounts to the backplate
  • Full access to additional IO
  • DIP switches are hidden under backplate (switch before mounting)
  • Full coverage active backplate
  • Backplate is 100% copper
  • Full coverage Fujipoly thermal pads
  • Notches for ITX and motherboards with tight DIMMs
  • Signature Kingpin GPU Waterblock - Raw Copper: $299
  • Kingpin GPU Waterblock - Nickel Finish: +$60
  • Kingpin GPU Backplate - Slim: +$59
  • Kingpin GPU Backplate - XL Heatsink: +$89
  • Kingpin GPU Rear Waterblock - Raw Copper: +$199
  • Backplate Nickel Plating: +$40
Main Block Finish:
Cold Plate Finish:




The world's highest performance GPU block crafted to unlock the performance of the EVGA Kingpin Edition GPU.



Extreme performance, crack-proof acrylic, corrosion-proof nickel and bulletproof construction.


More than just a backplate, the rear waterblock actively cools the entire PCB.



Extreme performance, crack-proof acrylic, corrosion-proof nickel and bulletproof construction.


  • NV Link Compatible
  • Kingpin OLED Screen Mount
  • Full access to monitoring headers and BIOS switch



"The Optimus block is the best 3090 block you can buy."


"GPU temps are redonkulous...

I don't know what witchcraft Optimus pulled on this one."


"The gpu block is the

most amazing piece

ofcomputer cooling I have ever held.


"I have the Optimus block...

people literally did not believe my temps..."


"Worth every penny."


"The temperatures of the water block

are just amazing."


"By far the easiest

gpu block I've ever installed."





Over three years of development went into creating our truly next-level patent-pending fin technology. Using a fully CNC machining process, Optimus is able to achieve 0.1016mm (0.004”) fins with 0.2032mm (0.008”) micro channels. This isn't just superior craftsmanship, it's generations beyond other fin designs.




  • TOP PLATE: Cast acrylic from Plexiglas® or Röchling-brand acetal
  • COLD PLATE: US-sourced premium C110-grade copper, guaranteed ASTM B187 spec
  • COLD PLATE FINISH: Raw copper or electroless nickel
  • BACKPLATE: US-sourced machined 6061 aluminum, satin hard anodized
  • O-RINGS: US-made plasticizer-free EPDM o-rings
  • GASKET: US-made plasticizer-free EPDM and FDA-grade custom gasket
  • SCREWS: US-made 18-8 stainless steel mounting screws, Optimus made stainless steel cold plate screws




  • Compatible with the EVGA KINGPIN 3090 GPU -- standard or hydocopper edition.
  • Not compatible with other EVGA cards (FTW3, XC3, Kingpin 2080, etc)
  • BACKPLATE REQUIRED: the backplate provides cooling as well as a mounting structure for the block itself.
  • ASUS MOTHERBOARDS: the XL backplate is able to work with most motherboards made, including the ASUS mobos with DIMMs close to the top slot.
  • OTHER MOTHERBOARDS: boards like EVGA Dark series with tall VRM cooling is untested



  • 1 x GPU Front waterblock
  • 1 x Rear waterblock
  • Thermal paste syringe + spatula
  • M1.5 hex key, T8 torx key, 8mm hex key
  • 2 x G1/4 Plugs
  • Installation instructions


Thermal Pads

  • Front thermal pads: Fujipoly - GR45 - 0.5mm
  • Rear thermal pad: Fujipoly - PG25 - 3.0mm


  • COPPER VS NICKEL COLD PLATE? Choose raw copper for highest theoretical performance (depends on overclocking and overall system). Choose nickel for aesthetics and/or liquid metal compatibility
  • ACRYLIC VS ACETAL? Our cast acrylic is actually far stronger than acetal, the traditional professional choice. Acetal won't ever crack, but it's soft and will deform with pressure and easily scratch. Our cast acrylic will survive far more abuse than acetal. So for all users, acrylic is recommended, unless you want the black look.
  • LIQUID METAL? BARE DIE?Go for it! Remember, liquid metal will etch copper immediately, though some builders like the performance of pure copper. Liquid metal will discolor nickel, but etching will take far longer. In both cases, performance of the cold plate won't be effected.
  • THERMAL PASTE? The KPX paste included with the GPU is the highest performance paste we've tested for use with the GPU block. The spread is very even and thin, which patches the polished cold plate for ideal contact.
  • FLOW DIRECTION? Fluid needs to flow in a specific direction -- center of fins and then out. On acrylic blocks, the "in" is connected to the center channel. On acetal blocks, the "out" shows the fins inside, while the fins can't be seen on the "in" port.
  • FLUSHING?All Optimus products have already been cleaned before shipping. You'll only need to flush your radiators and non-Optimus products. In fact, heavy system prep chemicals can be detrimental if they remain in small quantities in your loop. This can easily happen with fluid pressurized into o-ring grooves through heating.
  • CLEANING? Microfiber is your friend. Dish soap and water is ideal for our products. Always use microfiber glass cloths to prevent any scratches, especially on cold plates. Do not scrub, simply hand rinse. Isopropyl alcohol is not needed and can cause discoloration.
  • COPPER OXIDATION? Copper will immediately begin to oxidize (turn brown) when exposed to air. This is normal and expected and won't affect performance unless the oxidization is extreme, like the statue of liberty. But you're not leaving your blocks out by the ocean, are you?