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GPU Comparison
AMD Radeon HD 7870 GHz Edition vs AMD Radeon HD 7450 OEM
AMD Radeon HD 7870 GHz Edition vs AMD Radeon HD 7450 OEM
VS
AMD Radeon HD 7870 GHz Edition
AMD Radeon HD 7450 OEM
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 512MB VRAM Radeon HD 7450 OEM 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
Larger VRAM bandwidth (153.6GB/s vs 8.528GB/s)
1120 additional rendering cores
AMD Radeon HD 7450 OEM 's Advantages
Lower TDP (18W vs 175W)
Score
Benchmark
FP32 (float)
Radeon HD 7870 GHz Edition
+1180%
2.56 TFLOPS
Radeon HD 7450 OEM
0.2 TFLOPS
Radeon HD 7870 GHz Edition
VS
Radeon HD 7450 OEM
Graphics Card
Mar 2012
Release Date
Jan 2012
Southern Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1200 MHz
Memory Clock
533 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
64bit
153.6GB/s
Bandwidth
8.528GB/s
Render Config
-
SM Count
-
20
Compute Units
2
1280
Shading Units
160
80
TMUs
8
32
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
512 KB
L2 Cache
128 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
2.500 GPixel/s
80.00 GTexel/s
Texture Rate
5.000 GTexel/s
-
FP16 (half)
-
2.560 TFLOPS
FP32 (float)
200.0 GFLOPS
160.0 GFLOPS
FP64 (double)
-
Graphics Processor
Pitcairn
GPU Name
Caicos
Pitcairn XT (215-0828047)
GPU Variant
Caimour
GCN 1.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
2.8 billion
Transistors
0.37 billion
212 mm²
Die Size
67 mm²
Board Design
175W
TDP
18W
450 W
Suggested PSU
200 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.3a
2x 6-pin
Power Connectors
None
Graphics Features
12 (11_1)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
1.2
OpenCL
1.2
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
5.0
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