AMD Radeon R9 M390X
AMD Radeon R9 M390X是一款为笔记本电脑设计的高端移动显卡。它很可能是基于与2014年末iMac 5K中使用的AMD Radeon R9 M295X相同的芯片。这意味着它应该是采用第三代GCN架构（桌面版Tonga芯片）。着色器核心的数量相同，不过时钟频率降低了15%（从850MHz到723MHz）同时显存频率也较低（5448MHz vs 5000MHz）。
它的性能应该相比M295X稍慢。相比竞争对手，R9-M390X应该介于GeForce GTX 965M和970M之间，因此适合在1080p分辨率和高设定下运行大型游戏。
这款显卡最早是Alienware在他们的Twitter中所提到，搭配4GB的显存。
它的热设计功耗应该接近于100瓦，因此只适合大尺寸较为沉重的笔记本电脑（如所提到将会采用它的Alienware M17x）。
Radeon R9 M300 Series
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| Codename | Amethyst (XT) / Tonga | ||||||||||||||||||||||||||||||
| Architecture | GCN 3 | ||||||||||||||||||||||||||||||
| Pipelines | 2048 - unified | ||||||||||||||||||||||||||||||
| Core Speed | 723 (Boost) MHz | ||||||||||||||||||||||||||||||
| Memory Speed | 5000 MHz | ||||||||||||||||||||||||||||||
| Memory Bus Width | 256 Bit | ||||||||||||||||||||||||||||||
| Memory Type | GDDR5 | ||||||||||||||||||||||||||||||
| Max. Amount of Memory | 4 GB | ||||||||||||||||||||||||||||||
| Shared Memory | no | ||||||||||||||||||||||||||||||
| API | DirectX 12 (FL 12_0), Shader 5.0, OpenGL 4.3 / Vulkan | ||||||||||||||||||||||||||||||
| Power Consumption | 125 Watt | ||||||||||||||||||||||||||||||
| Transistor Count | 5 Billion | ||||||||||||||||||||||||||||||
| technology | 28 nm | ||||||||||||||||||||||||||||||
| Features | DirectX 12, OpenCL 1.2, OpenGL 4.3, Vulkan, Mantle | ||||||||||||||||||||||||||||||
| Notebook Size | large | ||||||||||||||||||||||||||||||
| Date of Announcement | 09.06.2015 | ||||||||||||||||||||||||||||||
Benchmarks
3DMark 11 - 3DM11 Performance Score
9082 Points (11%)
...
AMD Radeon R9 M395
NVIDIA Quadro P2000 Max-Q
NVIDIA Quadro M3000M
NVIDIA GeForce GTX 770M SLI
NVIDIA Quadro P2000
AMD Radeon R9 M295X
NVIDIA GeForce GTX 1050 Ti Max-Q
AMD Radeon R9 M390X
NVIDIA GeForce GTX 1050 Ti Mobile
NVIDIA Quadro M4000M
Intel Arc Graphics 130T
AMD FirePro W7170M
AMD Radeon Pro WX Vega M GL
AMD Radeon 680M
...
Nvidia RTX PRO 5000 Blackwell Generation Laptop
max:
NVIDIA GeForce RTX 5090
0%
100%
3DMark 11 - 3DM11 Performance GPU
9448 Points (7%)
...
NVIDIA Quadro M3000M
AMD Radeon RX 560 (Laptop)
NVIDIA Quadro P2000
AMD Radeon R9 M395
NVIDIA GeForce GTX 1050 Ti Max-Q
AMD Radeon R9 M295X
Intel Arc Graphics 130T
AMD Radeon R9 M390X
NVIDIA GeForce GTX 770M SLI
NVIDIA GeForce GTX 1050 Ti Mobile
AMD FirePro W7170M
...
Nvidia RTX PRO 5000 Blackwell Generation Laptop
max:
NVIDIA GeForce RTX 5090
0%
100%
- Range of benchmark values
- Average benchmark values
* Smaller numbers mean a higher performance
- Average benchmark values* Smaller numbers mean a higher performance
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v1.35
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