AMD Radeon HD 8950M vs AMD Radeon HD 7870 XT
GPU Specs Compare
Graphics Card
Release Date
May 2013
Nov 2012
Generation
Solar System
Southern Islands
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1375 MHz
1500 MHz
Base Clock
-
925 MHz
Boost Clock
-
975 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
256bit
Bandwidth
88.00GB/s
192.0GB/s
Render Config
Compute Units
12
24
Shading Units
768
1536
TMUs
48
96
ROPs
16
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
512 KB
Theoretical Performance
Pixel Rate
17.20 GPixel/s
31.20 GPixel/s
Texture Rate
51.60 GTexel/s
93.60 GTexel/s
FP32 (float)
1.651 TFLOPS
2.995 TFLOPS
FP64 (double)
103.2 GFLOPS
748.8 GFLOPS
Graphics Processor
GPU Name
Saturn
Tahiti
GPU Variant
Saturn XT
Tahiti LE(215-0821122)
Architecture
GCN 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.08 billion
4.313 billion
Die Size
160 mm²
352 mm²
Board Design
TDP
100W
185W
Outputs
No outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Suggested PSU
-
450 W
Power Connectors
-
2x 6-pin
Graphics Features
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.0
1.2
Vulkan
1.2
1.2
Shader Model
6.3
5.1