AMD Radeon HD 7970 GHz Edition vs AMD Radeon RX 550 Mobile
GPU Specs Compare
Graphics Card
Release Date
Jun 2012
Jul 2017
Generation
Southern Islands
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x8
Clock Speeds
Base Clock
1000 MHz
1100 MHz
Boost Clock
1050 MHz
1287 MHz
Memory Clock
1500 MHz
1500 MHz
Memory
Memory Size
3GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
128bit
Bandwidth
288.0GB/s
96.00GB/s
Render Config
Compute Units
32
10
Shading Units
2048
640
TMUs
128
40
ROPs
32
16
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
512 KB
Theoretical Performance
Pixel Rate
33.60 GPixel/s
20.59 GPixel/s
Texture Rate
134.4 GTexel/s
51.48 GTexel/s
FP32 (float)
4.301 TFLOPS
1.647 TFLOPS
FP64 (double)
1075 GFLOPS
103.0 GFLOPS
FP16 (half)
-
1.647 TFLOPS
Graphics Processor
GPU Name
Tahiti
Lexa
GPU Variant
Tahiti XT2(215-0821065)
Lexa PRO(215-0904018)
Architecture
GCN 1.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
4.313 billion
2.2 billion
Die Size
352 mm²
103 mm²
Board Design
TDP
300W
50W
Suggested PSU
700 W
-
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin + 1x 8-pin
None
Graphics Features
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
1.2
2.1
Vulkan
1.2
1.2
Shader Model
5.1
6.4