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GPU Comparison
AMD Radeon HD 7950 vs AMD Radeon HD 7870 GHz Edition
AMD Radeon HD 7950 vs AMD Radeon HD 7870 GHz Edition
VS
AMD Radeon HD 7950
AMD Radeon HD 7870 GHz Edition
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 and 2GB VRAM Radeon HD 7870 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7950 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (240.0GB/s vs 153.6GB/s)
512 additional rendering cores
AMD Radeon HD 7870 GHz Edition 's Advantages
Lower TDP (175W vs 200W)
Score
Benchmark
FP32 (float)
Radeon HD 7950
+11%
2.867 TFLOPS
Radeon HD 7870 GHz Edition
2.56 TFLOPS
Radeon HD 7950
VS
Radeon HD 7870 GHz Edition
Graphics Card
Jan 2012
Release Date
Mar 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
-
1250 MHz
Memory Clock
1200 MHz
Memory
3GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
240.0GB/s
Bandwidth
153.6GB/s
Render Config
-
SM Count
-
28
Compute Units
20
1792
Shading Units
1280
112
TMUs
80
32
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
512 KB
Theoretical Performance
25.60 GPixel/s
Pixel Rate
32.00 GPixel/s
89.60 GTexel/s
Texture Rate
80.00 GTexel/s
-
FP16 (half)
-
2.867 TFLOPS
FP32 (float)
2.560 TFLOPS
716.8 GFLOPS
FP64 (double)
160.0 GFLOPS
Graphics Processor
Tahiti
GPU Name
Pitcairn
Tahiti PRO (215-0821056)
GPU Variant
Pitcairn XT (215-0828047)
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
2.8 billion
352 mm²
Die Size
212 mm²
Board Design
200W
TDP
175W
550 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
2x 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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