AMD Radeon R9 280 vs AMD Radeon R9 280X2
GPU Specs Compare
Graphics Card
Release Date
Mar 2014
Unknown
Generation
Volcanic Islands
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
827 MHz
950 MHz
Boost Clock
933 MHz
1000 MHz
Memory Clock
1250 MHz
1500 MHz
Memory
Memory Size
3GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
384bit
Bandwidth
240.0GB/s
288.0GB/s
Render Config
Compute Units
28
32
Shading Units
1792
2048
TMUs
112
128
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
768 KB
Theoretical Performance
Pixel Rate
29.86 GPixel/s
32.00 GPixel/s
Texture Rate
104.5 GTexel/s
128.0 GTexel/s
FP32 (float)
3.344 TFLOPS
4.096 TFLOPS
FP64 (double)
836.0 GFLOPS
1024 GFLOPS
Graphics Processor
GPU Name
Tahiti
Tahiti
GPU Variant
Tahiti PRO3(215-0821330)
Tahiti XTL(215-0821065)
Architecture
GCN 1.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
4.313 billion
4.313 billion
Die Size
352 mm²
352 mm²
Board Design
TDP
200W
375W
Suggested PSU
550 W
750 W
Outputs
1x DVI2x HDMI 1.4a1x DisplayPort 1.2
6x mini-DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-pin
3x 8-pin
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.2
1.2
Shader Model
5.1
5.1