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GPU Comparison
AMD Radeon HD 7870 GHz Edition vs AMD Radeon HD 7950 Boost
AMD Radeon HD 7870 GHz Edition vs AMD Radeon HD 7950 Boost
VS
AMD Radeon HD 7870 GHz Edition
AMD Radeon HD 7950 Boost
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 3GB VRAM Radeon HD 7950 Boost to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7870 GHz Edition 's Advantages
Lower TDP (175W vs 200W)
AMD Radeon HD 7950 Boost 's Advantages
Boost Clock925MHz
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (240.0GB/s vs 153.6GB/s)
512 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 7870 GHz Edition
2.56 TFLOPS
Radeon HD 7950 Boost
+29%
3.315 TFLOPS
Radeon HD 7870 GHz Edition
VS
Radeon HD 7950 Boost
Graphics Card
Mar 2012
Release Date
Jun 2012
Southern Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
850 MHz
-
Boost Clock
925 MHz
1200 MHz
Memory Clock
1250 MHz
Memory
2GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
384bit
153.6GB/s
Bandwidth
240.0GB/s
Render Config
-
SM Count
-
20
Compute Units
28
1280
Shading Units
1792
80
TMUs
112
32
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
768 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
29.60 GPixel/s
80.00 GTexel/s
Texture Rate
103.6 GTexel/s
-
FP16 (half)
-
2.560 TFLOPS
FP32 (float)
3.315 TFLOPS
160.0 GFLOPS
FP64 (double)
828.8 GFLOPS
Graphics Processor
Pitcairn
GPU Name
Tahiti
Pitcairn XT (215-0828047)
GPU Variant
Tahiti PRO2 (215-0821282)
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.8 billion
Transistors
4.313 billion
212 mm²
Die Size
352 mm²
Board Design
175W
TDP
200W
450 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
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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