AMD Radeon HD 8870 OEM vs AMD Radeon HD 8950M
GPU Specs Compare
Graphics Card
Release Date
Jan 2013
May 2013
Generation
Sea Islands
Solar System
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1200 MHz
1375 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
128bit
Bandwidth
153.6GB/s
88.00GB/s
Render Config
Compute Units
20
12
Shading Units
1280
768
TMUs
80
48
ROPs
32
16
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
256 KB
Theoretical Performance
Pixel Rate
32.00 GPixel/s
17.20 GPixel/s
Texture Rate
80.00 GTexel/s
51.60 GTexel/s
FP32 (float)
2.560 TFLOPS
1.651 TFLOPS
FP64 (double)
160.0 GFLOPS
103.2 GFLOPS
Graphics Processor
GPU Name
Pitcairn
Saturn
GPU Variant
Pitcairn XT(215-0828047)
Saturn XT
Architecture
GCN 1.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.8 billion
2.08 billion
Die Size
212 mm²
160 mm²
Board Design
TDP
175W
100W
Suggested PSU
450 W
-
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
No outputs
Power Connectors
2x 6-pin
-
Graphics Features
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
1.2
2.0
Vulkan
1.2
1.2
Shader Model
5.1
6.3