Zephyra GX-4644 Ultra 16GB GDDR6 Graphics Card
Graphics Cards · Zephyra · SKU GX4644-ULTRA · Released 2019 · Updated 2026-10-26
Key facts
| Benchmark index | 38,890 (Graphics Cards scale) |
|---|---|
| Category rank | #47,613 |
| Street price | $1,629 |
| Power | 380 W (TGP) |
| Performance per dollar | 23.87 |
| Released | 2019 |
Specifications
| Brand | Zephyra |
|---|---|
| Model | Zephyra GX-4644 Ultra |
| Video memory | 16 GB GDDR6 |
| Memory bus | 256-bit |
| Memory speed | 20 Gbps |
| Memory bandwidth | 640 GB/s |
| Shader units | 16,640 |
| Boost clock | 2,172 MHz |
| Bus interface | PCIe 3.0 x16 |
| Total graphics power (TGP) | 380 W |
| Power connectors | 3× 8-pin PCIe |
| Recommended PSU | 800 W |
| Ray tracing | Hardware-accelerated |
| Upscaling | FSR 1 (spatial) |
| Display outputs | 1× HDMI 2.0b, 3× DisplayPort 1.4 |
| Resizable BAR | Supported (firmware update) |
| Card size | 3-slot, 326 mm |
Related guides
How Much VRAM Do You Need? 1080p, 1440p, 4K and AIResizable BAR (ReBAR) ExplainedChoosing a GPU for 1440p GamingChoosing a GPU for 4K GamingGDDR7 Memory ExplainedPCIe 5.0 Explained
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Cite this page: Hardware Spec Index, “Zephyra GX-4644 Ultra 16GB GDDR6 Graphics Card”, https://vextor7.com/item/4241734 (accessed 2026-10-26).