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GPU Comparison
AMD Radeon Sky 900 vs AMD Radeon R9 285X
AMD Radeon Sky 900 vs AMD Radeon R9 285X
VS
AMD Radeon Sky 900
AMD Radeon R9 285X
We compared two Desktop platform GPUs: 3GB VRAM Radeon Sky 900 and 3GB VRAM Radeon R9 285X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon Sky 900 's Advantages
Boost Clock950MHz
AMD Radeon R9 285X 's Advantages
Larger VRAM bandwidth (264.0GB/s vs 240.0GB/s)
256 additional rendering cores
Lower TDP (200W vs 300W)
Score
Benchmark
FP32 (float)
Radeon Sky 900
3.405 TFLOPS
Radeon R9 285X
+20%
4.104 TFLOPS
Radeon Sky 900
VS
Radeon R9 285X
Graphics Card
Mar 2013
Release Date
Unknown
Radeon Sky
Generation
Volcanic 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
32.06 GPixel/s
106.4 GTexel/s
Texture Rate
128.3 GTexel/s
-
FP16 (half)
-
3.405 TFLOPS
FP32 (float)
4.104 TFLOPS
851.2 GFLOPS
FP64 (double)
-
Graphics Processor
Tahiti
GPU Name
Tonga
Orthrus
GPU Variant
Tonga XT (215-0851313)
GCN 1.0
Architecture
GCN 3.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
5 billion
352 mm²
Die Size
366 mm²
Board Design
300W
TDP
200W
700 W
Suggested PSU
550 W
1x DVI 1x mini-DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
2x 8-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Features
12 (11_1)
DirectX
12 (12_0)
4.6
OpenGL
4.6
1.2
OpenCL
2.0
1.2
Vulkan
1.2
-
CUDA
-
5.1
Shader Model
6.3
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