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AMD Radeon HD 6490M
- Graphics Processor
- Seymour
- Cores
- 160
- TMUs
- 8
- ROPs
- 4
- Memory Size
- 512 MB
- Memory Type
- GDDR5
- Bus Width
- 64 bit
GPU
Recommended Gaming Resolutions:
- 640x480
- 1280x720
- 1366x768
The Radeon HD 6490M was a mobile graphics chip by AMD, launched on January 4th, 2011. Built on the 40 nm process, and based on the Seymour graphics processor, in its Seymour XTX S3 variant, the chip supports DirectX 11.2. The Seymour graphics processor is a relatively small chip with a die area of only 67 mm² and 370 million transistors. It features 160 shading units, 8 texture mapping units, and 4 ROPs. AMD has paired 512 MB GDDR5 memory with the Radeon HD 6490M, which are connected using a 64-bit memory interface. The GPU is operating at a frequency of 800 MHz, memory is running at 800 MHz (3.2 Gbps effective).
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 HD 6490M is connected to the rest of the system using a PCI-Express 2.0 x16 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 HD 6490M is connected to the rest of the system using a PCI-Express 2.0 x16 interface.
Graphics Processor
- GPU Name
- Seymour
- GPU Variant
-
Seymour XTX S3
(216-0809024)
- Architecture
- TeraScale 2
- Foundry
- TSMC
- Process Size
- 40 nm
- Transistors
- 370 million
- Density
- 5.5M / mm²
- Die Size
- 67 mm²
- Chip Package
- FCBGA-631/962
Mobile Graphics
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
- GPU Clock
- 800 MHz
- Memory Clock
-
800 MHz
3.2 Gbps effective
Memory
- Memory Size
- 512 MB
- Memory Type
- GDDR5
- Memory Bus
- 64 bit
- Bandwidth
- 25.60 GB/s
Render Config
- Shading Units
- 160
- TMUs
- 8
- ROPs
- 4
- Compute Units
- 2
- L1 Cache
- 8 KB (per CU)
- L2 Cache
- 128 KB
Theoretical Performance
- Pixel Rate
- 3.200 GPixel/s
- Texture Rate
- 6.400 GTexel/s
- FP32 (float)
- 256.0 GFLOPS
Board Design
- TDP
- unknown
- Outputs
- Portable Device Dependent
Graphics Features
- DirectX
- 11.2 (11_0)
- OpenGL
- 4.4
- OpenCL
- 1.2
- Vulkan
- N/A
- Shader Model
- 5.0
Seymour GPU Notes
| Generation: Northern Islands Desktop Variant: Caicos Graphics/Compute: GFX4 Display Core Engine: 5.0 Unified Video Decoder: 3.1 |
Devices based on this design (1)
| Name | GPU Clock | Memory Clock | Other Changes |
|---|---|---|---|
| 800 MHz | 800 MHz | 1024 MB |
Jul 24th, 2025 15:01 CDT
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