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AMD Radeon R5 M255
- Graphics Processor
- Topaz
- Cores
- 384
- TMUs
- 24
- ROPs
- 8
- Memory Size
- 2 GB
- Memory Type
- DDR3
- Bus Width
- 128 bit
GPU
Recommended Gaming Resolutions:
- 640x480
- 1280x720
- 1366x768
The Radeon R5 M255 was a mobile graphics chip by AMD, launched on October 12th, 2014. Built on the 28 nm process, and based on the Topaz graphics processor, in its Topaz PRO variant, the chip supports DirectX 12. This ensures that all modern games will run on Radeon R5 M255. The Topaz graphics processor is an average sized chip with a die area of 125 mm² and 1,550 million transistors. It features 384 shading units, 24 texture mapping units, and 8 ROPs. AMD has paired 2,048 MB DDR3 memory with the Radeon R5 M255, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 925 MHz, which can be boosted up to 940 MHz, memory is running at 1000 MHz.
Its power draw is not exactly known. This device has no display connectivity, as it is not designed to have monitors connected to it. Rather it is intended for use in laptop/notebooks and will use the output of the host mobile device. Radeon R5 M255 is connected to the rest of the system using a PCI-Express 3.0 x8 interface.
Its power draw is not exactly known. This device has no display connectivity, as it is not designed to have monitors connected to it. Rather it is intended for use in laptop/notebooks and will use the output of the host mobile device. Radeon R5 M255 is connected to the rest of the system using a PCI-Express 3.0 x8 interface.
Graphics Processor
Mobile Graphics
- Release Date
- Oct 12th, 2014
- Generation
-
Gem System
(R5 M200)
- Predecessor
- Solar System
- Successor
- Polaris Mobile
- Production
- End-of-life
- Bus Interface
- PCIe 3.0 x8
Relative Performance
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for RTX 3080 and faster.
Performance estimated based on architecture, shader count and clocks.
Clock Speeds
- Base Clock
- 925 MHz
- Boost Clock
- 940 MHz
- Memory Clock
-
1000 MHz
2 Gbps effective
Memory
- Memory Size
- 2 GB
- Memory Type
- DDR3
- Memory Bus
- 128 bit
- Bandwidth
- 32.00 GB/s
Render Config
- Shading Units
- 384
- TMUs
- 24
- ROPs
- 8
- Compute Units
- 6
- L1 Cache
- 16 KB (per CU)
- L2 Cache
- 256 KB
Theoretical Performance
- Pixel Rate
- 7.520 GPixel/s
- Texture Rate
- 22.56 GTexel/s
- FP16 (half)
- 721.9 GFLOPS (1:1)
- FP32 (float)
- 721.9 GFLOPS
- FP64 (double)
- 45.12 GFLOPS (1:16)
Board Design
- TDP
- unknown
- Outputs
- Portable Device Dependent
Graphics Features
- DirectX
- 12 (12_0)
- OpenGL
- 4.6
- OpenCL
- 2.1
- Vulkan
- 1.2.170
- Shader Model
- 6.5
Topaz GPU Notes
| Generation: Volcanic Islands Desktop Variant: Iceland Mobile Variant: Meso / Weston / Polaris 24 Graphics/Compute: GFX8 (gfx802) Display Core Engine: No Support Unified Video Decoder: No Support Video Compression Engine: No Support System DMA: 2.0.0 CLRX: GCN 1.2.0 |
Jul 29th, 2025 20:27 CDT
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