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GPU Comparison
AMD Radeon HD 6870 1600SP Edition vs AMD Radeon HD 6450
AMD Radeon HD 6870 1600SP Edition vs AMD Radeon HD 6450
VS
AMD Radeon HD 6870 1600SP Edition
AMD Radeon HD 6450
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP Edition and 512MB VRAM Radeon HD 6450 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6870 1600SP Edition 's Advantages
Released 1 years and 9 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (134.4GB/s vs 25.60GB/s)
1440 additional rendering cores
AMD Radeon HD 6450 's Advantages
Lower TDP (18W vs 175W)
Score
Benchmark
FP32 (float)
Radeon HD 6870 1600SP Edition
+1260%
2.72 TFLOPS
Radeon HD 6450
0.2 TFLOPS
Radeon HD 6870 1600SP Edition
VS
Radeon HD 6450
Graphics Card
Jan 2013
Release Date
Apr 2011
Northern Islands
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1050 MHz
Memory Clock
800 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
64bit
134.4GB/s
Bandwidth
25.60GB/s
Render Config
-
SM Count
-
20
Compute Units
2
1600
Shading Units
160
80
TMUs
8
32
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
8 KB (per CU)
512 KB
L2 Cache
128 KB
Theoretical Performance
27.20 GPixel/s
Pixel Rate
2.500 GPixel/s
68.00 GTexel/s
Texture Rate
5.000 GTexel/s
-
FP16 (half)
-
2.720 TFLOPS
FP32 (float)
200.0 GFLOPS
544.0 GFLOPS
FP64 (double)
-
Graphics Processor
Cypress
GPU Name
Caicos
Cypress XT (215-0735033)
GPU Variant
Caicos PRO
TeraScale 2
Architecture
TeraScale 2
TSMC
Foundry
TSMC
40 nm
Process Size
40 nm
2.154 billion
Transistors
0.37 billion
334 mm²
Die Size
67 mm²
Board Design
175W
TDP
18W
450 W
Suggested PSU
200 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
2x 6-pin
Power Connectors
None
Graphics Features
11.2 (11_0)
DirectX
11.2 (11_0)
4.4
OpenGL
4.4
1.2
OpenCL
1.2
N/A
Vulkan
N/A
-
CUDA
-
5.0
Shader Model
5.0
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9
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