PC build
Arrow Lake Blackwell A3 Enthusiast Build
This high-performance Micro-ATX build centers on the Intel Core Ultra 7 270K Plus and the NVIDIA GeForce RTX 5080, utilizing the modern LGA1851 platform. H
Component prices & shopping links
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| Part | Component | AUD price & shopping |
|---|---|---|
| cpu | Intel Core Ultra 7 270K Plus | $519.00 Last seenOct 21, 2026, 6:35 PM UTCCurrent price and stock need a new check.Confirm variant, stock, shipping and tax at checkout. |
| gpu | GIGABYTE GeForce RTX 5080 GAMING OC 16G | Price not recorded yet. Check local retailers below.Confirm variant, stock, shipping and tax at checkout. |
| motherboard | ASRock B860M Steel Legend WiFi | Price not recorded yet. Check local retailers below.Confirm variant, stock, shipping and tax at checkout. |
| ram | Patriot Viper Elite 5 Ultra DDR5 64GB (2 x 32GB) 6400MHz CL32 Kit | Price not recorded yet. Check local retailers below.Confirm variant, stock, shipping and tax at checkout. |
| storage | Crucial P510 2TB PCIe Gen5 NVMe M.2 SSD | Price not recorded yet. Check local retailers below.Confirm variant, stock, shipping and tax at checkout. |
| psu | Corsair SF1000 (2024) | Price not recorded yet. Check local retailers below.Confirm variant, stock, shipping and tax at checkout. |
| case | Lian Li A3-mATX | Price not recorded yet. Check local retailers below.Confirm variant, stock, shipping and tax at checkout. |
| cooler | ASUS PRIME LC 360 ARGB White Edition | Price not recorded yet. Check local retailers below.Confirm variant, stock, shipping and tax at checkout. |
What this build is good for
This high-performance Micro-ATX build centers on the Intel Core Ultra 7 270K Plus and the NVIDIA GeForce RTX 5080, utilizing the modern LGA1851 platform. Housed in the compact 26.3L Lian Li A3-mATX, the system is designed for high-end gaming and productivity. The build features high-speed DDR5 memory and a PCIe 5.0 NVMe SSD for fast data throughput. Cooling is handled by a 360mm AIO, which requires meticulous installation in the small chassis. The selection of a 1000W SFX power supply from Corsair significantly aids in managing the limited internal space while providing ample headroom for power-intensive components. Because the case is compact, users should prioritize cable routing and verify component clearance—particularly GPU thickness when using bottom fans—to maintain thermal efficiency and build integrity in this dense, powerful configuration.
- Cable management in the 26L A3-mATX chassis is challenging for beginners.
- Thermal overhead for high-end components requires careful fan curve tuning.
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Useful next steps
Configure AIO and PSU placement
The Lian Li A3-mATX has modular mounting. Prioritize a top-mounted 360mm AIO configuration; front-mounting the PSU can provide more space, but requires careful routing of stiff ATX power cables.
Verify GPU and fan clearance
Installing 25mm thick fans at the bottom of the case may limit available GPU thickness. Confirm the specific RTX 5080 physical dimensions against your bottom fan configuration.
Update BIOS for CPU stability
Always check for the latest BIOS updates for your B860 motherboard to ensure optimal power management and platform compatibility for the Arrow Lake Refresh architecture.