FormD T1 V2.1 SFF Build

Compact small-form-factor gaming PC built following the Eiga Works FormD T1 5090 Air guide.

FormD T1 V2.1

Parts List

Component Part
CPU AMD Ryzen 7 9800X3D
CPU Cooler Thermalright AXP90-X47 Full Copper
Cooler Fan Noctua NF-A9x14 HS-PWM chromax.black.swap
Motherboard ASUS ROG STRIX B850-I GAMING WIFI (Mini ITX, AM5)
RAM Patriot Venom 64 GB (2x32 GB) DDR5-6000 CL30
Storage Samsung 990 Pro 2 TB (M.2 PCIe 4.0 x4 NVMe)
GPU NVIDIA GeForce RTX 5080 Founders Edition 16 GB
Case FormD T1 V2.1
Case Add-ons T1 GPU Travel Kit, T1 PCIe SS200 Gen5 Riser, T1 Essentials Pack
PSU Corsair SF1000 (2024) 80+ Platinum, SFX
Exhaust Fans 2x Phanteks T30-120
Contact Frame Thermal Grizzly AM5 Contact Frame
Backplate Thermal Grizzly AM5 Short Backplate
Thermal Paste Thermal Grizzly Duronaut
Cables Custom Black Teflon cables from CablesterCustom (24P 170mm, CPU 8P 290mm, GPU 12V2X6 300mm)
Screws 12x M3 flat head 4mm, 16x M3 countersunk 5mm, 11x M3 countersunk 8mm

PCPartPicker list

Build Guide

This build follows the Eiga guide which targets the RTX 5090 FE, but uses an RTX 5080 FE instead. The assembly process is identical since both cards share the same Founders Edition dual-slot cooler design. Same screws as the guide.

Thermals

Reference thermals from the Eiga guide (5090 FE undervolted @ 885mV, +3000 MHz memory / 9800X3D Curve Shaper -20 Max, 100W PPT / 20C ambient, 37 dBA @ 50cm):

Game Settings GPU Avg GPU Max CPU Avg CPU Max
Star Wars Outlaws 4K, RT Ultra, DLSS Perf, X4 MFG (20min) 69C 72.5C 60C 68C
Doom: The Dark Ages 4K, Ultra/Nightmare, DLSS Perf (30min) 63C 65C 65C 75C
Baldur's Gate 3 4K, DLSS Quality (3 run avg) 63C 65C 77C 80.5C
God of War Ragnarok 4K Medium, DLSS Perf (3 run avg) 63C 63C 69C 75C

With the RTX 5080 FE (lower TDP than 5090), thermals should be equal or better.

Created 2026-02-07T23:51:13+01:00, updated 2026-02-08T00:39:32+01:00 · History · Edit