This article covers Sapphire 11304-02-20G Nitro+ AMD Radeon RX 6800 XT PCIe 4.0 ゲーミンググラフィックスカード 16GB GDDR6付き.

Overview

The Sapphire Nitro+ AMD Radeon RX 6800 XT is a high-end graphics card built on AMD's RDNA 2 architecture. Powered by the Navi 21 XT GPU and accompanied by 16GB of GDDR6 memory on a 256-bit bus, it delivers excellent 4K gaming performance. The triple-fan cooling solution and premium build quality are hallmarks of the Nitro+ lineup, ensuring stable operation under heavy loads. Boost clock reaches 2360 MHz, with game clock at 2110 MHz, allowing modern titles to run at high frame rates even at 4K. The Nitro+ series is known for its robust overclocking headroom and efficient thermal management, making it a favorite among enthusiasts. Market positioning places this card directly against NVIDIA's GeForce RTX 3080. The larger 16GB VRAM buffer gives it an edge in texture-heavy games, while the competitive price point (historically around $650-750 MSRP) makes it an attractive option for high-resolution gaming.

Compatibility Guide

Interface: PCI Express 4.0 x16 (backward compatible with PCIe 3.0, minimal performance loss) Power: Two 8-pin PCIe power connectors required; recommended system power supply: 650W minimum (750W+ preferred) Physical dimensions: Approximately 310mm length, 135mm height, 58mm width (2.5 slots). Confirm your case's maximum GPU clearance before purchase. Display outputs: 3x DisplayPort 1.4, 1x HDMI 2.1 supporting 4K@120Hz and 8K@60Hz * Works best with AMD Ryzen CPUs and a B550/X570 motherboard to enable Smart Access Memory for additional performance.

Product Info

Released in November 2020, the Sapphire Nitro+ RX 6800 XT carries a 2-year warranty from Sapphire's official distributors. Its original MSRP was around $699, but current market pricing (as of mid-2026) hovers around ¥160,000-170,000 JPY on Japanese retailers. This card belongs to the high-end tier, offering factory-overclocked speeds and superior cooling over reference designs.

Best Use Cases

4K Gamers: The 16GB VRAM provides headroom for high-resolution textures at 4K. Games like Cyberpunk 2077, Red Dead Redemption 2, and Horizon Forbidden West run smoothly with high settings. However, ray tracing performance lags behind NVIDIA's RTX 3080, so if path tracing is a priority, consider Team Green. Content Creators Using OpenCL/Vulkan: For 3D rendering in Blender or video editing in DaVinci Resolve (especially Linux users), this card offers excellent compute performance. VRAM capacity is a boon for large scenes. Note that Adobe Creative Suite heavily favors CUDA/RTX cards. * Silence-Oriented Builds: The semi-passive fan mode stops fans entirely at idle, and even under load, the triple-fan setup remains relatively quiet compared to blower-style coolers. Good for a home theater PC or quiet workstation. ## Alternatives
Direct competitors include the NVIDIA GeForce RTX 3080 (10GB). The RTX 3080 offers superior ray tracing and DLSS upscaling, but its 10GB VRAM can be a bottleneck in 4K textures. AMD's Smart Access Memory can provide a 5-10% performance boost when paired with a Ryzen 5000/7000 CPU. Another option is the Radeon RX 6900 XT, which offers ~10% more performance but at a significantly higher price—making the 6800 XT the better value.

Things to Consider

The card's large size (~310mm) may not fit in compact cases. Always measure internal GPU clearance and allow extra space for power cables. Some mid-tower cases with a drive cage obstructing the GPU slot may require modification. Power draw is substantial: the card itself consumes up to 300W under load, and transient spikes can briefly exceed that, demanding a quality PSU with stable 12V rails. Ray tracing performance is mediocre by today's standards. If you plan to play with full ray tracing/path tracing, an RTX 4070 or higher would be a better choice. Driver stability on the AMD side has improved significantly since 2020, but occasional issues with specific game titles still occur. Check community feedback for recent driver releases. * The HDMI 2.1 port supports 4K@120Hz, but make sure your monitor or TV also supports HDMI 2.1 for full bandwidth. ## FAQ Q: What power supply wattage do I need? A: AMD recommends a 650W PSU, but for headroom and transient spikes, a quality 750W unit is advisable. Look for a PSU with at least two dedicated 8-pin PCIe cables (not daisy-chained). Q: Does this card support Smart Access Memory? A: Yes. When paired with a Ryzen 3000/5000/7000 series CPU and an AMD 500-series motherboard, SAM can provide a 5-15% performance uplift in some titles. Q: Can I use this card for machine learning? A: AMD's ROCm platform has improved, but NVIDIA's CUDA ecosystem remains dominant for ML frameworks like TensorFlow and PyTorch. For hobbyist or research use, it can work with considerable setup effort.

Product Disclosure (Amazon)

  • Manufacturer: SAPPHIRE
  • Seller: Islands Hoppers
  • Fulfilled by: Islands Hoppers
  • ASIN: B08NXXT7WN
  • Note: This article covers a manufacturer-made product based on Amazon listing details.