AMD Radeon R9 M290X vs AMD Radeon R9 280X2
GPU Specs Compare
Graphics Card
Release Date
Jan 2014
Unknown
Generation
Gem System
Volcanic Islands
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
850 MHz
950 MHz
Boost Clock
900 MHz
1000 MHz
Memory Clock
1200 MHz
1500 MHz
Memory
Memory Size
4GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
384bit
Bandwidth
153.6GB/s
288.0GB/s
Render Config
Compute Units
20
32
Shading Units
1280
2048
TMUs
80
128
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
768 KB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
32.00 GPixel/s
Texture Rate
72.00 GTexel/s
128.0 GTexel/s
FP32 (float)
2.304 TFLOPS
4.096 TFLOPS
FP64 (double)
144.0 GFLOPS
1024 GFLOPS
Graphics Processor
GPU Name
Neptune
Tahiti
GPU Variant
Neptune XT(216-0847000)
Tahiti XTL(215-0821065)
Architecture
GCN 1.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.8 billion
4.313 billion
Die Size
212 mm²
352 mm²
Board Design
TDP
100W
375W
Outputs
Portable Device Dependent
6x mini-DisplayPort 1.2
Power Connectors
None
3x 8-pin
Suggested PSU
-
750 W
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.1 (1.2)
1.2
Vulkan
1.2.170
1.2
Shader Model
6.5 (5.1)
5.1