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RTX 5090 Gaming PC Singapore - Asus RTX 5090, Ryzen 9 9900X, $8,545 SGD
Quick answer: This RTX 5090 gaming PC Singapore build runs a 12-core Ryzen 9 9900X, 64 GB of DDR5 RAM at 6400 MHz, and an Asus RTX 5090 with 32 GB of GDDR7 VRAM, priced at $8,545 SGD, built and delivered by Mansa Computers.
Last updated: May 2026
AT A GLANCE
Build Summary
Build Type
4K Gaming + Workstation
Key Components
Ryzen 9 9900X + Asus RTX 5090
Case
Corsair 4000D RS ARGB - Black
Price
SGD $8,545
See the Original Instagram Post
Built for 4K Gaming and Serious Work
At $8,545 SGD, this custom RTX 5090 gaming PC Singapore build runs a 12-core Ryzen 9 9900X, 64 GB of DDR5 RAM at 6400 MHz, and an Asus RTX 5090 with 32 GB of GDDR7 VRAM. The configuration is built for one type of customer: someone who renders video, runs AI models, or codes during the day and games at 4K at night.
The Ryzen 9 9900X has 12 cores and 24 threads. That core count covers demanding multi-threaded workloads: video exports, large dataset processing, AI model runs. It also stays quick in the single-threaded tasks that gaming depends on. The 64 GB of DDR5 RAM at 6400 MHz covers memory-heavy workstation sessions without paging to disk. For gaming alone, 32 GB would be enough. The extra capacity is there for the workstation side.
Cooling is the Corsair iCue Link Titan RX 360 AIO (All-in-One liquid cooler), a 360 mm radiator that helps keep the 9900X cooled under sustained load. A Thermalright 1200 W 80+ Gold PSU (Power Supply Unit) covers the RTX 5090's power draw with room to spare. Storage is a 2 TB Lexar NM790 Gen 4 NVMe SSD. Three ARGB fans and Activated Windows 11 Pro 64-Bit ship with the build, housed in the Corsair 4000D RS ARGB mid-tower in black.
FULL SPECS
What's Inside
Motherboard
Asus B850 Plus Prime CSM Wi-Fi 6E & Bluetooth
Processor
Ryzen 9 9900X
Cooler
Corsair RGB iCue Link Titan RX 360 AIO - Black
Graphics Card
Nvidia RTX 5090 32 GB - Asus
Storage
Lexar NM790 2 TB Gen 4 SSD
RAM
KingBank RGB Soarblade DDR5 64 GB 6400 MHz - Black
Power Supply
Thermalright 1200 W 80+ Gold
Case
Corsair Frame 4000D RS ARGB - Black
Operating System
Activated Windows 11 Pro 64-Bit
Accessory
3 x ARGB Fans
Build Photos
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ASUS RTX 5090 Close-Up
A close-up look at the ASUS RTX 5090 inside the build, showing the clean GPU placement, blue lighting accent, and tidy internal layout.
Corsair iCUE Link Titan RX Cooling
The Corsair iCUE Link Titan RX 360 AIO adds strong cooling support for the Ryzen 9 9900X while matching the build’s black-and-blue lighting theme.
KingBank RGB DDR5 Memory
The KingBank RGB DDR5 memory adds a bright blue highlight beside the motherboard, keeping the build clean, balanced, and performance-focused.
Corsair Frame 4000D RS Airflow
A closer view of the Corsair Frame 4000D RS front mesh design, with ARGB fans drawing fresh air into the system for a clean airflow-focused setup.
Ready for Delivery
The completed Corsair Frame 4000D RS build, fully assembled with a clean black finish, blue lighting, and a powerful RTX 5090 gaming setup inside.
PERFORMANCE
Performance at 4K
The RTX 5090 is NVIDIA's flagship consumer GPU for 4K gaming and workstation use. Testing by GamersNexus found Black Myth: Wukong averaging 86 FPS at 4K High settings on the RTX 5090, with 1% lows that beat the RTX 4090's average FPS. Resident Evil 4 at 4K averaged 207 FPS on the same card. In Cyberpunk 2077 with RT Ultra at 4K, Tom's Hardware reported a 33% performance uplift over the RTX 4090 with upscaling and frame generation turned off.
Across a 4K rasterization suite, Tom's Hardware found the RTX 5090 to be 25% faster than the RTX 4090 on average, with individual games ranging from 6% to 43% faster.
The 32 GB of GDDR7 VRAM gives useful headroom for 4K textures, ray tracing workloads, AI inference, and GPU-accelerated rendering compared with lower-memory cards. With DLSS 4 Multi-Frame Generation active in supported titles, output frame rates can climb much higher, but native rendered FPS and generated-frame FPS should be treated separately.
For AI work and content creation, the extra VRAM helps with larger models, heavier GPU rendering projects, and memory-intensive creative workloads. Every Mansa build goes through 24-hour stress testing before shipping, covering CPU and GPU stability under sustained workstation load, not just gaming or idle tests.
"There really is no question, RTX 5090 is the card you want for 4K gaming at maximum settings with all RT eye candy enabled."
TechPowerUpTotal Price
SGD $8,545
Pricing as of May 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 5090 gaming PC cost in Singapore?
This build costs $8,545 SGD. RTX 5090 gaming PCs in Singapore start at $7,000+ depending on the CPU, RAM capacity, case, and storage selected. This build uses a 12-core Ryzen 9 9900X with 64 GB of DDR5 RAM and a 2 TB Gen 4 NVMe SSD, which puts it at workstation-class pricing. A build with a lower-tier CPU and 32 GB of RAM would come in lower.
Can the RTX 5090 run 4K games at maximum settings?
Yes. Testing by GamersNexus found the RTX 5090 averaging 86 FPS in Black Myth: Wukong at 4K High settings and 207 FPS in Resident Evil 4 at 4K. Tom's Hardware also found the RTX 5090 to be 25% faster than the RTX 4090 on average across its 4K Ultra rasterization suite. The 32 GB of VRAM gives useful headroom for high-resolution textures, ray tracing workloads, and modern 4K games.
Is the Ryzen 9 9900X good for both gaming and work?
Yes. The Ryzen 9 9900X has 12 cores and 24 threads, which makes it suitable for gaming, video rendering, AI model inference, and code compilation. At 4K, most demanding games are usually GPU-limited, so the RTX 5090 is the main performance driver in this configuration. The 64 GB of DDR5 RAM also gives useful headroom for memory-intensive workstation applications.
Want Something Like This?
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