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GPU Comparison
AMD Radeon HD 7770 GHz Edition vs AMD Radeon HD 7950
AMD Radeon HD 7770 GHz Edition vs AMD Radeon HD 7950
VS
AMD Radeon HD 7770 GHz Edition
AMD Radeon HD 7950
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition 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 7770 GHz Edition 's Advantages
Lower TDP (80W vs 200W)
AMD Radeon HD 7950 's Advantages
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (240.0GB/s vs 72.00GB/s)
1152 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 7770 GHz Edition
1.28 TFLOPS
Radeon HD 7950
+123%
2.867 TFLOPS
Radeon HD 7770 GHz Edition
VS
Radeon HD 7950
Graphics Card
Feb 2012
Release Date
Jan 2012
Southern Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1125 MHz
Memory Clock
1250 MHz
Memory
1024MB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
384bit
72.00GB/s
Bandwidth
240.0GB/s
Render Config
-
SM Count
-
10
Compute Units
28
640
Shading Units
1792
40
TMUs
112
16
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
768 KB
Theoretical Performance
16.00 GPixel/s
Pixel Rate
25.60 GPixel/s
40.00 GTexel/s
Texture Rate
89.60 GTexel/s
-
FP16 (half)
-
1280 GFLOPS
FP32 (float)
2.867 TFLOPS
80.00 GFLOPS
FP64 (double)
716.8 GFLOPS
Graphics Processor
Cape Verde
GPU Name
Tahiti
Cape Verde XT
GPU Variant
Tahiti PRO (215-0821056)
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.5 billion
Transistors
4.313 billion
123 mm²
Die Size
352 mm²
Board Design
80W
TDP
200W
250 W
Suggested PSU
550 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
2x 6-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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