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Placing the radiators.

That GPU block is a monster... will it fit!?

Monster of a GPU!

Backplate removed.

Once naked, they're really not much to them!

Waterblock installed.

Different in size between the aircooler and without.

It fits!

...just barely :|

This corner will be trimmed to fit up against the motherboard.

Original

Wrapped in white.

Installed!

Waiting for more fittings to arrive to finish up.

Original

Wrapped in white.

The rear plug is in the same place as the original, convenient!

In place and looking good!

Cables are next... but system is filled and temps are good!

Several areas not making contact... always check this before installing!

Almost done the big one!

This is what I need to clean up/replace.

Finally got the main and one PCI cable done. I hate how they have to twist... but I don't have the luxury in this case of hiding one end. Suggestions?

Don't even say it. I know what you're thinking.

Bobblehead for scale.

I thought about the nice cover EK released for these pumps, but this side faces the wall so it can be ugly.

3D printed some leg extensions (found on Thingiverse) to help get some more air up in there.

Tight fit.

Very tight fit.

Barely any room between the GPU and the rad, but the temps stay low enough I'm not concerned.

Big Dreams in Tiny Box - RTX3090 in a Mini-ITX (Full custom loop)

Saving on deskspace without sacrificing top of the line parts and liquid cooling? Let's stuff an RTX3090 into a Mini-ITX case with a full hard loop!

Color(s): Blue White

RGB Lighting? Yes

Theme: Color

Cooling: Custom Liquid Cooling

Size: Mini-ITX

Type: General Build

Build Updates

Fitting & Testing

Installing GPU block.

As you can see by the photos there is quite the different in size between the air cooler and EKWB. With air cooler, there is not way this card was fitting in the case, so it's a good thing I already decided on a full custom loop!

The GPU backplate won't fit up against the I/O area of the motherboard once installed, so I'll need to cut a corner off on that end so it can fit. I'll be wrapping the backplace in white vinyl to match everything else. I would have been happy with the nickel backplate, but I scored the waterblock and plate locally for a great deal.

The fitment of the GPU with waterblock installed inside the case is TIGHT. Like... not a 1/8mm to spare. I'm very lucky I didn't have to modify anything.

Monster of a GPU!

Backplate removed.

Once naked, they're really not much to them!

Waterblock installed.

Different in size between the aircooler and without.

It fits!

...just barely :|

This corner will be trimmed to fit up against the motherboard.

GPU backplate wrap

Setting up the loop

Power Supply installation

Filling, temps, and final fitment.

Custom Cables

Complete!

Well, after many months of tinkering and procrastinating, this build is done. I ended up getting the EK Active Backplate for my 3090 to help deal with the insane VRAM temps. They dropped a solid 20-25 degrees. Fitting it in there was a challenge, but it worked. I also redid my tubing and am very happy with the results. I also ended up getting the cables done, I didn't like the sleeving I had and in the end was easier and faster to pay someone else to do it for me hehe.

I drilled a hole and fit a fill port out the front which goes directly into the EK reservoir. I left the extension on right now as a flex move (lol). It helped get a bit more air out and made it easier to fill. I might leave it as you can't see the front from where the case sits.

Don't even say it. I know what you're thinking.

Bobblehead for scale.

I thought about the nice cover EK released for these pumps, but this side faces the wall so it can be ugly.

3D printed some leg extensions (found on Thingiverse) to help get some more air up in there.

Tight fit.

Very tight fit.

Barely any room between the GPU and the rad, but the temps stay low enough I'm not concerned.

Hardware

Category / Value

Brand / Part

CPU

$ 320.00

Intel - Core i9-10850k

Socket: LGA 1200

Cores: 10

Integrated Graphics: Yes

Motherboard

$ 499.00

ASUS - ROG Strix Gaming (Z490-I) (WiFi 6)

Chipset: Z490

CPU Socket: LGA 1200

Size: Mini-ITX

Memory

$ 228.00

Corsair - Vengeance Pro (3200MHz) (White/RGB)

Type: DDR4

Capacity: 16 GB

Graphics

$ 2,500.00

ASUS - ROG Strix OC

Chip Manufacturer: NVIDIA

Chip: RTX 3090

Interface: PCIe x16

Storage

$ 199.99

Western Digital - WD Black SN850

Form Factor: M.2

Interface: PCIe x4

Capacity: 1 TB

PSU

$ 245.00

Seasonic - Focus GX

Wattage: 550

Form Factor: ATX

Efficiency: 80+ Gold

Case

$ 173.04

IN-WIN - A1 Plus (White)

Type: Mini-ITX

Side Panel: Tempered Glass

RGB: Yes

Case Fan

$ 63.00

Corsair - ML120 PRO 120mm PWM Premium Magnetic Levitation

Size: 120 mm

Case Fan

$ 63.00

Corsair - ML120 PRO 120mm PWM Premium Magnetic Levitation

Size: 120 mm

Case Fan

$ 111.33

Corsair - Ql120 (RGB) (3Pack)

Size: 120 mm

Cooling

$ 180.00

EKWB - EK-Quantum Vector Strix RTX 3080/3090 Active Backplate - Acetal

Type: GPU Backplate

Cooling

$ 219.99

EKWB - EK-Quantum Vector Strix RTX 3080/3090 D-RGB - Nickel + Acetal

Type: GPU Waterblock

Cooling

$ 220.00

EKWB - EK-Quantum Velocity - Nickel + Plexi

Type: CPU Block

Estimated total value of this build:

$ 5,022.35

Approved by:

Big Dreams in Tiny Box - RTX3090 in a Mini-ITX (Full custom loop)

Big Dreams in Tiny Box - RTX3090 in a Mini-ITX (Full custom loop)

Build Updates

Fitting & Testing

Installing GPU block.

GPU backplate wrap

Setting up the loop

Power Supply installation

Filling, temps, and final fitment.

Custom Cables

Complete!

Hardware

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