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GPU Comparison
AMD Radeon Sky 900 vs AMD Radeon HD 7970 X2
AMD Radeon Sky 900 vs AMD Radeon HD 7970 X2
VS
AMD Radeon Sky 900
AMD Radeon HD 7970 X2
We compared two Desktop platform GPUs: 3GB VRAM Radeon Sky 900 and 3GB VRAM Radeon HD 7970 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon Sky 900 's Advantages
Released 7 months late
Boost Clock950MHz
Lower TDP (300W vs 500W)
AMD Radeon HD 7970 X2 's Advantages
Larger VRAM bandwidth (264.0GB/s vs 240.0GB/s)
256 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon Sky 900
3.405 TFLOPS
Radeon HD 7970 X2
+11%
3.789 TFLOPS
Radeon Sky 900
VS
Radeon HD 7970 X2
Graphics Card
Mar 2013
Release Date
Aug 2012
Radeon Sky
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
825 MHz
Base Clock
-
950 MHz
Boost Clock
-
1250 MHz
Memory Clock
1375 MHz
Memory
3GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
384bit
240.0GB/s
Bandwidth
264.0GB/s
Render Config
-
SM Count
-
28
Compute Units
32
1792
Shading Units
2048
112
TMUs
128
32
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
768 KB
Theoretical Performance
30.40 GPixel/s
Pixel Rate
29.60 GPixel/s
106.4 GTexel/s
Texture Rate
118.4 GTexel/s
-
FP16 (half)
-
3.405 TFLOPS
FP32 (float)
3.789 TFLOPS
851.2 GFLOPS
FP64 (double)
947.2 GFLOPS
Graphics Processor
Tahiti
GPU Name
New Zealand
Orthrus
GPU Variant
-
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
4.313 billion
352 mm²
Die Size
352 mm²
Board Design
300W
TDP
500W
700 W
Suggested PSU
900 W
1x DVI 1x mini-DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
2x 8-pin
Power Connectors
3x 8-pin
Graphics Features
12 (11_1)
DirectX
12 (11_1)
4.6
OpenGL
4.6
1.2
OpenCL
1.2
1.2
Vulkan
1.2
-
CUDA
-
5.1
Shader Model
5.1
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