You are absolutely correct. My son told me the same thing, but the plan is to have it on a table and if this project goes well my hope is to build a custom side panel in clear plus papaya acrylic and make a show-case with orange LED.

So theoretically not on a floor, but if it is, yes, a filter will be essential!

@Hewligan great job!! Subscribed for updates 

You might want to find a mesh/filter to add under that fan, since it will be pulling air from your floor. You don't want to end up with all the dust/hair/etc inside your PC.

@Hewligan Nice photos, I look forward to reading about the process. 

Just fyi that your service tag, and express service code, are both clearly visible in picture #2 (the base).   You might want to delete that image and repost.  

@r72019 Thank you, but only a 20 minute window to edit posts, so it shall live for eternity!

You are a legend!!!

I will post my maximum 10 images tomorrow with replacements. Tonight I dismantled the case. It is now just an empty husk.

@Hewligan I think you can delete images from your profile album, maybe this can remove from your post 

Anyway great job, this is gonna be an awesome adventure, I will be watching with keen interest 

Cool that worked, credit goes to eagle-eyed @r72019 

I removed the CPU, VRM, top push-full, etc... The case is now totally in parts. I have lots of photographs but this forum really limits me to a very small number of uploads.

No stopping you now  awesome plan, it's gonna be a fun Easter weekend, looking forward to more news of your progress @Hewligan 

FIrst up, here is the layout I have planned:

Second is my dremel:

Foot before final tidy-up work, but after creating fan space and air tunnel:

This is how the fan fits, although I have since moved it down half a milimeter. The fan cable snakes up into the case very neatly:

Slowly I will catch up with photographs, but here is what I used my day off for:

1. Totally stripped down the computer to the bare metal shroud
2. Dremel cut the top shroud to fit the 240mm radiator and fans in push pull
3. Drilled the case to allow the tubes to enter from the top radiator
4. Drilled the case to create 4 screw holes for the reservoir (front top bay)
5. Drilled the bottom of the case to create holes for the pump and reservoir
6. Create a slot in the bottom of the case to tidy cables
7. Realised the Right Angled SATA cables that Dell provides will not fit in my pump: onlinr order and hey-presto new SATA extender with straight connector
8. To go with the longer-term Papaya theme (phase 2), I spray-painted parts of the inside case a fluro orange - this is just meant to be background noise for the later orange theme I have planned
9. Fitted the EK FLT 120 Reservoir, and managed to route the RGB cable out to the right side of the case where I used the spare cable tidy to pin it. Out of sight, out of mind

So that leaves me with quite a few major jobs for tomorrow:

1. Fit the waterblock to the GeForce RTX 3080 (gulp!)
2. Drill holes to create a top fan-hole outlet (nervous about this as it is the only part of the mod that will be externally visible, and I have found the plastic to be VERY HARD
3. Rebuild the PC
4. Quick radiator drain/clean
5. Cut and fit the water-cooling items
6. Cross all fingers and test the system

I will be done by the end of the weekend. I would put my chances of success at about 50% at the moment.

Quick post before I follow up with more tomorrow.

Build is complete but untested.

Another photo or two:

I have never opened a GPU and not researched what needs thermal pads, I think you are fliping the waterblock to assemble from right to left and left to right  highlighted by the green lines for padding chips.

I wonder if you need to pad both upper mini chips near the screw holes 

One green is covered, the other red is not?

And what about that chip under the GPU chip, highlighted red?

Just being concerned for your future icy cold temps

It works! It isn’t perfect, and with infinite connector options I may have got a better fit, but it works.

I can confirm that the Arctic P12 does cause the Bios error on startup. Annoying, but only takes a few seconds to press the escape key to boot.

Front fan (Noctua 15mm) also does not spin. I will need to try and get to the connector (easier said than done) and see if I have maybe not seated it fully.

Take a look at the shocking thermal paste job on the stock nvidia cooler: