The High-End Build: A Deep-Sea Blue PC With Nothing Held Back

This is the fourth and final entry in Budget Picks’ complete-build format, one full step up from the premium tier: AMD’s flagship 16-core X3D chip, a genuine RTX 5090, and a full tower with room to actually fit both. Every part below was checked against its own official specs and against the others in this list, not assumed compatible because the individual pieces are all reputable brands.

Why these parts fit together

The CPU and motherboard share the AM5 socket, and GIGABYTE’s own listing confirms Ryzen 9000 series support on this board directly rather than behind a pending BIOS update. The board’s stated 256GB DDR5 ceiling and AMD EXPO support cover the 64GB kit installed here with plenty of headroom, at the same 6000MHz CL30 profile the motherboard confirms as its stable ceiling for two DIMMs. The graphics card measures 329mm end to end against a case rated for 400mm, and the 360mm liquid cooler matches the case’s top radiator mount exactly. NVIDIA’s own guidance for this GPU calls for a native 12V-2x6 power connector rather than an adapter, and the power supply here ships with exactly that cable, rated at 1200W against a combined CPU and GPU board power well under 800W.

Where the money actually goes

The graphics card carries most of this build on its own, and that is the entire point of a high-end tier: a genuine current-generation flagship GPU, not a previous-generation card wearing a flagship price because new stock of the real thing is thin. The CPU is the other place spending shows up clearly. AMD’s flagship X3D part costs more than the premium tier’s 8-core version partly because it packs twice the cores, and it doesn’t include a cooler in the box, which is why a dedicated 360mm AIO is its own line item here instead of assumed free. Memory is the other line worth flagging. DDR5 pricing has climbed sharply industry-wide this year, so a 64GB kit at this speed and profile costs more than older reference numbers would suggest.

If the graphics card is out of stock

Flagship GPU listings at this tier move in and out of stock constantly, so check the listing before planning the rest of the build around it. If it shows no offer when you get there, the closest equivalent is the ASUS ROG Astral GeForce RTX 5090 32GB OC Edition, same GPU and same 32GB of GDDR7.

One physical difference matters before you order that one: ASUS lists it at 357.6mm long and four slots thick, against 329mm and 3.5 slots for the card above. The length still clears the case’s 400mm rating with room to spare, but the extra slot of thickness is worth checking against your own slot spacing if you plan to put anything in the PCIe slot below it.

Getting the deep-sea blue look without extra spending

The case’s four pre-installed ARGB fans and the liquid cooler’s pump cap and fan ring both default to addressable lighting that reads as a clean blue-to-violet without any custom curve set up. The memory kit’s RGB top bars pick up the same palette instead of adding a mismatched third lighting zone, and the motherboard’s RGB Fusion header can sync all three to a static deep-blue if you want the whole build locked to one tone rather than cycling.

What this build is, and isn’t

This is a compatibility-checked parts list, not a benchmarked one. Every socket, memory speed ceiling, clearance figure, and wattage number above comes from the parts’ own official specs and listings, cross-checked against each other, not from assembling and running the system ourselves.

Note: two parts here are replacements. The CPU cooler and the memory kit this build originally listed were both swapped for the parts above. Memory and flagship GPU pricing are both running far above older reference numbers across the industry right now, which is worth knowing before committing to this tier.

Hero photo: “2025 Wnętrze komputera PC” by Jacek Halicki, cropped and resized, licensed under CC BY-SA 4.0. This adaptation is shared under the same license.