Updated June 2026 • AI-Verified • Compatibility Checked
Best $3,500 PC Build for Gaming & Streaming at 1440P (AMD + NVIDIA) – Mini-ITX
This compact Mini-ITX build delivers exceptional performance for 1440p streaming and gaming, featuring the powerful AMD Ryzen 7 9800X3D and NVIDIA's RTX 5080. It's designed for enthusiasts who demand top-tier capabilities in a small form factor, ensuring smooth gameplay and high-quality content creation.
Socket Match
DDR Match
PSU Capacity
Chassis Clearance
$3,350
Target Budget: $3,500
Expected Real-World Capability
How this configuration handles real-world workloads, based on its specs, thermal tolerances, and price tier.
✓
Ultra 1440p Dominance
Easily runs AAA games at 1440p on maximum settings, targeting 100–144+ FPS in high-refresh environments.
✓
Esports-Ready Speed
Maintains 240+ FPS in competitive titles (Valorant, Apex Legends, Fortnite) with low latency and optimal frame times.
✓
Direct Twitch/YT Streaming
Dedicated hardware encoders easily broadcast 1080p/60fps streams without affecting your local gaming FPS.
Complete Build Checklist
A quick overview of all 8 components and pricing. Click any part to view details or check live Amazon prices.
| Component | Model Name & Role | Est. Price | Retail Price |
|---|---|---|---|
|
CPU |
AMD Ryzen 7 9800X3D
Primary Processor
|
$600 |
View on Amazon → |
|
GPU |
NVIDIA GeForce RTX 5080
Graphics Card
|
$1,500 |
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|
Motherboard |
ASUS ROG Strix B650E-I Gaming WiFi
Mainboard
|
$350 |
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|
Memory |
G.Skill Flare X5 32GB (2x16GB) DDR5-6000 CL30
RAM
|
$120 |
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|
Storage |
Samsung 990 Pro 4TB NVMe PCIe 4.0 SSD
Primary Storage Drive
|
$320 |
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|
PSU |
Corsair SF850L 850W 80+ Gold SFX-L
Power Supply Unit
|
$180 |
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|
CPU Cooler |
Arctic Liquid Freezer III 240 AIO
CPU Liquid Cooler
|
$120 |
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|
Case |
Lian Li A4-H2O
PC Chassis
|
$160 |
View on Amazon → |
| Estimated Build Total | $3,350 |
Shop Setup on Amazon → |
|
Component Deep Dive
Why we selected each of these 8 parts for this build and how they fit into the compatibility ecosystem.
AMD Ryzen 7 9800X3D
Primary Processor
Offers top-tier gaming performance combined with strong multi-core capabilities, making it ideal for simultaneous gaming and high-quality streaming on the AM5 platform.
$600
Local pricing varies
NVIDIA GeForce RTX 5080
Graphics Card
Provides exceptional 1440p to 4K gaming and streaming performance, leveraging NVIDIA's superior encoder for high-quality live broadcasts.
$1,500
Local pricing varies
ASUS ROG Strix B650E-I Gaming WiFi
Mainboard
A premium Mini-ITX board offering robust power delivery for the 9800X3D, advanced connectivity including PCIe 5.0, and integrated WiFi, perfect for a compact high-performance build.
$350
Local pricing varies
G.Skill Flare X5 32GB (2x16GB) DDR5-6000 CL30
RAM
The optimal balance of speed and latency for AMD Ryzen 9000 series CPUs, with 32GB being ample for demanding games and streaming applications.
$120
Local pricing varies
Samsung 990 Pro 4TB NVMe PCIe 4.0 SSD
Primary Storage Drive
Massive, ultra-fast storage capacity for a large game library, operating system, and extensive streaming recordings and media, ensuring quick load times and smooth operation.
$320
Local pricing varies
Corsair SF850L 850W 80+ Gold SFX-L
Power Supply Unit
Provides sufficient and stable power for the high-end CPU and GPU in a compact SFX-L form factor, ensuring efficient and reliable operation for this powerful Mini-ITX build.
$180
Local pricing varies
Arctic Liquid Freezer III 240 AIO
CPU Liquid Cooler
Excellent thermal performance to keep the powerful Ryzen 7 9800X3D cool under heavy streaming and gaming loads, crucial for maintaining performance in a mini-ITX case.
$120
Local pricing varies
Lian Li A4-H2O
PC Chassis
A highly acclaimed compact mini-ITX case known for its small footprint, premium build quality, and excellent compatibility with high-performance components like a 240mm AIO and large GPUs.
$160
Local pricing varies
System Compatibility Verification
Every full build passes a strict validation run before publication. Here are the status check reports:
CPU Socket Match
Verifies that the motherboard's socket (e.g. AM5 or LGA1851) matches the designated CPU precisely.
Verified
Memory Gen Match
Verifies that the CPU memory controller and motherboard slots support the same DDR standard (DDR4 or DDR5).
Verified
PSU Capacity
Ensures the chosen power supply capacity matches the cumulative peak load of the components with safety buffer.
Verified
Chassis Dimensions
Verifies that the motherboard layout fits the case, and GPU length/cooler height clear the internal chassis clearances.
Verified
This Mini-ITX build features a powerful AMD Ryzen 7 9800X3D CPU and an NVIDIA GeForce RTX 5080 GPU, optimized for 1440p streaming and gaming. The selected components ensure excellent performance in a compact form factor, with a 240mm AIO for effective cooling and a high-wattage SFX-L PSU for stability.
Note: Cross-referencing specifications on product boxes during unboxing is always recommended before tearing open plastic wraps.
Compatibility Notes
This Mini-ITX build features a powerful AMD Ryzen 7 9800X3D CPU and an NVIDIA GeForce RTX 5080 GPU, optimized for 1440p streaming and gaming. The selected components ensure excellent performance in a compact form factor, with a 240mm AIO for effective cooling and a high-wattage SFX-L PSU for stability.
Upgrade Path
Given the high-end nature of this build with a Ryzen 7 9800X3D and RTX 5080, major performance upgrades won't be necessary for several years. Future upgrades could include migrating to a higher core count Zen 5 or Zen 6 CPU on the AM5 platform, or upgrading to a next-generation NVIDIA GPU when available. For storage, adding another high-capacity NVMe SSD is straightforward, and while 32GB DDR5 is ample, increasing to 64GB could be an option for extremely demanding multi-tasking or professional workloads.
Tradeoffs
The primary tradeoff in this build is the Mini-ITX form factor. While it offers a sleek, compact design, it inherently limits expansion slots for additional PCIe cards beyond the GPU and restricts the size of CPU coolers to 240mm AIOs. This choice prioritizes portability and desk space over maximum internal expandability, though the selected components are top-tier and don't compromise on raw performance. The premium for SFX-L components also slightly increases the overall cost compared to a full-sized ATX build with similar performance.
FAQ
Is this build suitable for competitive gaming at 1440p?
Absolutely. The AMD Ryzen 7 9800X3D's gaming prowess combined with the NVIDIA RTX 5080 ensures high frame rates and low latency, making it ideal for competitive 1440p gaming.
Can I use this PC for content creation beyond streaming?
Yes, with its 8-core/16-thread CPU, ample 32GB DDR5 RAM, and powerful GPU, this system is highly capable for video editing, 3D rendering, and other demanding content creation tasks.
Is the 240mm AIO sufficient for the Ryzen 7 9800X3D in a Mini-ITX case?
The Arctic Liquid Freezer III 240 AIO is a high-performance cooler well-regarded for its efficiency. It is perfectly capable of keeping the Ryzen 7 9800X3D cool even under heavy loads in the Lian Li A4-H2O, especially with its integrated VRM fan.
Why choose an SFX-L PSU instead of a standard ATX PSU?
The SFX-L form factor PSU is necessary for the compact Mini-ITX Lian Li A4-H2O case. It provides the required power in a smaller footprint, allowing for compatibility with the case's design while still offering high wattage and efficiency.