AMD Radeon RX 455 OEM vs AMD Radeon HD 7950 Monica BIOS 1
GPU Specs Compare
Graphics Card
Release Date
Jun 2016
Jan 2012
Generation
Arctic Islands
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1625 MHz
1250 MHz
Memory
Memory Size
2GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
384bit
Bandwidth
104.0GB/s
240.0GB/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
768 KB
Theoretical Performance
Pixel Rate
16.80 GPixel/s
29.60 GPixel/s
Texture Rate
50.40 GTexel/s
88.80 GTexel/s
FP32 (float)
1.613 TFLOPS
2.842 TFLOPS
FP64 (double)
100.8 GFLOPS
710.4 GFLOPS
Graphics Processor
GPU Name
Tobago
Tahiti
GPU Variant
Tobago PRO(215-0875010)
Tahiti PRO(215-0821056)
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
Suggested PSU
300 W
450 W
Outputs
1x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
1x 6-pin
1x 6-pin + 1x 8-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