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4K Gaming PC with RTX 5080 - $5,520 SGD | Mansa Computers
Quick answer:
This RTX 5080 gaming PC in Singapore has the Intel Core Ultra 9 285K and Nvidia RTX 5080 16 GB inside the Asus GX601 ROG Strix Helios case on the Z890 platform, priced at $5,520 SGD and assembled by Mansa Computers.
Last updated: February 2026
AT A GLANCE
Build Summary
Build Type
4K Gaming PC
Key Components
Intel Core Ultra 9 285K + RTX 5080
Case
Asus GX601 ROG Strix Helios - Black
Price
SGD $5,520
Watch the Build
A 4K Intel Gaming Build in the ROG Strix Helios
This RTX 5080 gaming PC build in Singapore runs on the Intel Core Ultra 9 285K and Nvidia RTX 5080 16 GB, priced at $5,520 SGD. The Asus Z890-P Prime motherboard gives the build a current-gen LGA1851 platform with Wi-Fi 7, PCIe 5.0 storage support, and Bluetooth.
Storage is a Lexar NM790 2 TB NVMe (Non-Volatile Memory Express) Gen 4 SSD. RAM is 64 GB of Corsair Vengeance RGB DDR5 at 6000 MHz in grey. The Thermalright Phantom Spirit 120 Evo in black provides CPU cooling. Power comes from a Thermalright 1200 W 80+ Gold PSU. The Asus GX601 ROG Strix Helios case in black runs four case fans, and the full-tower chassis leaves the internal layout open for cable routing.
FULL SPECS
What's Inside
Motherboard
Asus Z890-P Prime Wi-Fi 7 & Bluetooth
Processor
Intel Core Ultra 9 285K
Cooler
Thermalright Phantom Spirit 120 Evo - Black
Graphics Card
Nvidia RTX 5080 16 GB - Asus
Storage
Lexar NM790 2 TB NVMe Gen 4 SSD
RAM
Corsair Vengeance RGB DDR5 64 GB 6000 MHz - Grey
Power Supply
Thermalright 1200 W 80+ Gold
Case
Asus GX601 ROG Strix Helios - Black
Fans
4 x Black Fans
Operating System
Activated Windows 11 Home 64-Bit
Build Photos
Swipe or use arrows to see more photos.
CPU Cooler Close-Up
This photo focuses on the Thermalright Phantom Spirit 120 Evo air cooler in black. Its large dual-fan, dual-heatsink design stands out immediately, giving the build a powerful cooling presence with subtle purple lighting accents around the fan frame.
Graphics Card & Internal Layout
This shot highlights the Asus GeForce RTX graphics card mounted beneath the air cooler. The layout shows a clean performance-focused setup, with the GPU sitting tightly under the cooler and the power cable routed neatly into the card.
RAM & Motherboard Detail
This image zooms in on the Corsair RGB Vengeance DDR5 memory beside the CPU cooler. The vertical light bar adds a sharp visual contrast against the dark interior, while the surrounding motherboard area keeps the overall look clean and premium.
Top I/O & Carry Strap Detail
This photo shows the top front section of the ROG Strix Helios case, including the front I/O panel with multiple USB ports, USB-C, audio jacks, and control buttons. The signature fabric carry strap across the top adds a distinctive ROG design touch.
Front Panel Showcase
This image highlights the front glass panel with the illuminated Republic of Gamers branding visible inside. It gives the case a bold, premium identity and emphasizes the showcase styling of the build.
PERFORMANCE
Performance at 4K
The RTX 5080 16 GB ran Resident Evil 4 at 122 FPS and FFXIV Dawntrail at 112 FPS at 4K, both tested by GamersNexus. Dragon's Dogma 2 reached 84 FPS, Dying Light 2 reached 81 FPS, and Starfield ran at 76 FPS at the same resolution.
The card carries 16 GB of GDDR7 VRAM and a 360 W TGP (Total Graphics Power), fed by the Thermalright 1200 W PSU. The Intel Core Ultra 9 285K is a 24-core LGA1851 processor on the Z890 platform, built for workloads that run alongside gaming including recording, rendering, and content creation. The 64 GB of DDR5 at 6000 MHz supports those combined workloads without constraint.
"At a price of $999, the Nvidia GeForce RTX 5080 is now easily the best sub-$1,000 graphics card."
PCGamesNTotal Price
SGD $5,520
Pricing as of February 2026. Component prices change with market conditions. Press the WhatsApp button on the right to speak with us if you need help with a PC build for a current quote.
FAQ
Frequently Asked Questions
How much does an RTX 5080 gaming PC cost in Singapore?
This RTX 5080 gaming PC in Singapore is priced at $5,520 SGD. It includes the Intel Core Ultra 9 285K, Nvidia RTX 5080 16 GB, 64 GB DDR5 RAM, 2 TB NVMe SSD, a 1200 W PSU, and Activated Windows 11 Home.
Can the RTX 5080 run games at 4K?
Yes. In GamersNexus testing at 4K, the RTX 5080 reached 122 FPS in Resident Evil 4, 112 FPS in FFXIV Dawntrail, 84 FPS in Dragon's Dogma 2, and 76 FPS in Starfield. With DLSS 4 Multi Frame Generation enabled in supported titles, frame rates increase further above those rasterized numbers.
Why choose the Intel Core Ultra 9 285K for a gaming build?
The Intel Core Ultra 9 285K has 24 cores across performance and efficiency cores on the LGA1851 platform, making it well-suited for tasks that run alongside gaming. Recording with OBS, running a stream, or using video editing software in the background draws on those extra cores without pulling from game performance. For a build targeting 4K gaming and content creation, the 285K on Z890 covers both workloads.
Want Something Like This?
Every build is adjustable. Different GPU tier? Different colour scheme? We can spec it out.
Explore our custom gaming PC builds or view the RTX 5080 in our catalogue.
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