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GPU Comparison
AMD Radeon HD 6390 vs AMD Radeon HD 7950
AMD Radeon HD 6390 vs AMD Radeon HD 7950
VS
AMD Radeon HD 6390
AMD Radeon HD 7950
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6390 and 3GB VRAM Radeon HD 7950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6390 's Advantages
Lower TDP (39W vs 200W)
AMD Radeon HD 7950 's Advantages
Released 6 months late
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (240.0GB/s vs 16.00GB/s)
1472 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6390
0.352 TFLOPS
Radeon HD 7950
+714%
2.867 TFLOPS
Radeon HD 6390
VS
Radeon HD 7950
Graphics Card
Jul 2011
Release Date
Jan 2012
Northern Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
500 MHz
Memory Clock
1250 MHz
Memory
1024MB
Memory Size
3GB
DDR2
Memory Type
GDDR5
128bit
Memory Bus
384bit
16.00GB/s
Bandwidth
240.0GB/s
Render Config
-
SM Count
-
4
Compute Units
28
320
Shading Units
1792
16
TMUs
112
8
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
768 KB
Theoretical Performance
4.400 GPixel/s
Pixel Rate
25.60 GPixel/s
8.800 GTexel/s
Texture Rate
89.60 GTexel/s
-
FP16 (half)
-
352.0 GFLOPS
FP32 (float)
2.867 TFLOPS
-
FP64 (double)
716.8 GFLOPS
Graphics Processor
Redwood
GPU Name
Tahiti
Redwood LE
GPU Variant
Tahiti PRO (215-0821056)
TeraScale 2
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
0.627 billion
Transistors
4.313 billion
104 mm²
Die Size
352 mm²
Board Design
39W
TDP
200W
200 W
Suggested PSU
550 W
1x DVI 1x HDMI 1.3a 1x VGA
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
None
Power Connectors
2x 6-pin
Graphics Features
11.2 (11_0)
DirectX
12 (11_1)
4.4
OpenGL
4.6
1.2
OpenCL
1.2
N/A
Vulkan
1.2
-
CUDA
-
5.0
Shader Model
5.1
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8
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9
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10
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