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GPU Comparison
AMD Radeon Sky 900 vs ATI Radeon HD 3850 X2
AMD Radeon Sky 900 vs ATI Radeon HD 3850 X2
VS
AMD Radeon Sky 900
ATI Radeon HD 3850 X2
We compared two Desktop platform GPUs: 3GB VRAM Radeon Sky 900 and 512MB VRAM Radeon HD 3850 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 4 years and 11 months late
Boost Clock950MHz
Larger VRAM bandwidth (240.0GB/s vs 52.99GB/s)
1472 additional rendering cores
ATI Radeon HD 3850 X2 's Advantages
Lower TDP (140W vs 300W)
Score
Benchmark
FP32 (float)
Radeon Sky 900
+695%
3.405 TFLOPS
Radeon HD 3850 X2
0.428 TFLOPS
Radeon Sky 900
VS
Radeon HD 3850 X2
Graphics Card
Mar 2013
Release Date
Apr 2008
Radeon Sky
Generation
Radeon R600
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
828 MHz
Memory
3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
384bit
Memory Bus
256bit
240.0GB/s
Bandwidth
52.99GB/s
Render Config
-
SM Count
-
28
Compute Units
4
1792
Shading Units
320
112
TMUs
16
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
-
768 KB
L2 Cache
256 KB
Theoretical Performance
30.40 GPixel/s
Pixel Rate
10.70 GPixel/s
106.4 GTexel/s
Texture Rate
10.70 GTexel/s
-
FP16 (half)
-
3.405 TFLOPS
FP32 (float)
428.2 GFLOPS
851.2 GFLOPS
FP64 (double)
85.63 GFLOPS
Graphics Processor
Tahiti
GPU Name
RV670
Orthrus
GPU Variant
RV670 PRO (215-0708003)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.666 billion
352 mm²
Die Size
192 mm²
Board Design
300W
TDP
140W
700 W
Suggested PSU
300 W
1x DVI 1x mini-DisplayPort 1.2
Outputs
2x DVI 1x S-Video
2x 8-pin
Power Connectors
-
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full) 4.0 (partial)
1.2
OpenCL
N/A
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
4.1
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9
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