The Radeon HD 8670A was a mobile graphics chip by AMD, launched on February 2nd, 2013. Built on the 28 nm process, and based on the Sun graphics processor, in its Sun M2 XT variant, the chip supports DirectX 12. Even though it supports DirectX 12, the feature level is only 11_1, which can be problematic with newer DirectX 12 titles. The Sun graphics processor is a relatively small chip with a die area of only 56 mm² and 690 million transistors. It features 320 shading units, 20 texture mapping units, and 8 ROPs. AMD has paired 1,024 MB DDR3 memory with the Radeon HD 8670A, which are connected using a 64-bit memory interface. The GPU is operating at a frequency of 600 MHz, memory is running at 1000 MHz. Being a mxm module card, its power draw is rated at 45 W maximum. 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.
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.
Performance estimated based on architecture, shader count and clocks.
Clock Speeds
GPU Clock
600 MHz
Memory Clock
1000 MHz
2 Gbps effective
Memory
Memory Size
1024 MB
Memory Type
DDR3
Memory Bus
64 bit
Bandwidth
16.00 GB/s
Render Config
Shading Units
320
TMUs
20
ROPs
8
Compute Units
5
L1 Cache
16 KB (per CU)
L2 Cache
128 KB
Theoretical Performance
Pixel Rate
4.800 GPixel/s
Texture Rate
12.00 GTexel/s
FP32 (float)
384.0 GFLOPS
FP64 (double)
24.00 GFLOPS (1:16)
Board Design
Slot Width
MXM Module
TDP
45 W
Outputs
Portable Device Dependent
Graphics Features
DirectX
12 (11_1)
OpenGL
4.6
OpenCL
2.1 (1.2)
Vulkan
1.2.170
Shader Model
6.5 (5.1)
Card Notes
Used In All-In-One PCs
Sun GPU Notes
Generation: Sea Islands
Desktop Variant: Hainan
Mobile Variant: Jet / Exo / Banks
Graphics/Compute: GFX6 (gfx601)
Display Core Engine: No Support
Unified Video Decoder: No Support
Video Compression Engine: No Support
CLRX: GCN 1.0