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GPU Comparison
AMD Radeon Sky 900 vs AMD Radeon HD 6490
AMD Radeon Sky 900 vs AMD Radeon HD 6490
VS
AMD Radeon Sky 900
AMD Radeon HD 6490
We compared two Desktop platform GPUs: 3GB VRAM Radeon Sky 900 and 1024MB VRAM Radeon HD 6490 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon Sky 900 's Advantages
Released 1 years and 8 months late
Boost Clock950MHz
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (240.0GB/s vs 16.00GB/s)
1472 additional rendering cores
AMD Radeon HD 6490 's Advantages
Lower TDP (39W vs 300W)
Score
Benchmark
FP32 (float)
Radeon Sky 900
+867%
3.405 TFLOPS
Radeon HD 6490
0.352 TFLOPS
Radeon Sky 900
VS
Radeon HD 6490
Graphics Card
Mar 2013
Release Date
Jul 2011
Radeon Sky
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
825 MHz
Base Clock
-
950 MHz
Boost Clock
-
1250 MHz
Memory Clock
500 MHz
Memory
3GB
Memory Size
1024MB
GDDR5
Memory Type
DDR2
384bit
Memory Bus
128bit
240.0GB/s
Bandwidth
16.00GB/s
Render Config
-
SM Count
-
28
Compute Units
4
1792
Shading Units
320
112
TMUs
16
32
ROPs
8
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
768 KB
L2 Cache
256 KB
Theoretical Performance
30.40 GPixel/s
Pixel Rate
4.400 GPixel/s
106.4 GTexel/s
Texture Rate
8.800 GTexel/s
-
FP16 (half)
-
3.405 TFLOPS
FP32 (float)
352.0 GFLOPS
851.2 GFLOPS
FP64 (double)
-
Graphics Processor
Tahiti
GPU Name
Redwood
Orthrus
GPU Variant
Redwood LE
GCN 1.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
4.313 billion
Transistors
0.627 billion
352 mm²
Die Size
104 mm²
Board Design
300W
TDP
39W
700 W
Suggested PSU
200 W
1x DVI 1x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
2x 8-pin
Power Connectors
None
Graphics Features
12 (11_1)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
1.2
OpenCL
1.2
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
5.0
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