AMD Radeon R9 280 vs AMD Radeon HD 7970 X2
GPU Specs Compare
Graphics Card
Release Date
Mar 2014
Aug 2012
Generation
Volcanic Islands
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
827 MHz
-
Boost Clock
933 MHz
-
Memory Clock
1250 MHz
1375 MHz
Memory
Memory Size
3GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
384bit
Bandwidth
240.0GB/s
264.0GB/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
29.60 GPixel/s
Texture Rate
104.5 GTexel/s
118.4 GTexel/s
FP32 (float)
3.344 TFLOPS
3.789 TFLOPS
FP64 (double)
836.0 GFLOPS
947.2 GFLOPS
Graphics Processor
GPU Name
Tahiti
New Zealand
GPU Variant
Tahiti PRO3(215-0821330)
-
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
500W
Suggested PSU
550 W
900 W
Outputs
1x DVI2x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a2x 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