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GPU Comparison
AMD Radeon HD 6870 X2 vs ATI Radeon HD 4450
AMD Radeon HD 6870 X2 vs ATI Radeon HD 4450
VS
AMD Radeon HD 6870 X2
ATI Radeon HD 4450
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 512MB VRAM Radeon HD 4450 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6870 X2 's Advantages
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (134.4GB/s vs 6.400GB/s)
1040 additional rendering cores
ATI Radeon HD 4450 's Advantages
Lower TDP (25W vs 300W)
Score
Benchmark
FP32 (float)
Radeon HD 6870 X2
+2000%
2.016 TFLOPS
Radeon HD 4450
0.096 TFLOPS
Radeon HD 6870 X2
VS
Radeon HD 4450
Graphics Card
Jul 2011
Release Date
Nov 2011
Northern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1050 MHz
Memory Clock
400 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
DDR2
256bit
Memory Bus
64bit
134.4GB/s
Bandwidth
6.400GB/s
Render Config
-
SM Count
-
14
Compute Units
1
1120
Shading Units
80
56
TMUs
8
32
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
64 KB
Theoretical Performance
28.80 GPixel/s
Pixel Rate
2.400 GPixel/s
50.40 GTexel/s
Texture Rate
4.800 GTexel/s
-
FP16 (half)
-
2.016 TFLOPS
FP32 (float)
96.00 GFLOPS
-
FP64 (double)
-
Graphics Processor
Barts
GPU Name
RV710
Barts XT (215-0798000)
GPU Variant
RV710 (215-0725016)
TeraScale 2
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
55 nm
1.7 billion
Transistors
0.242 billion
255 mm²
Die Size
73 mm²
Board Design
300W
TDP
25W
700 W
Suggested PSU
200 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
1x DVI 1x HDMI 1.3a 1x DisplayPort 1.0
-
Power Connectors
None
Graphics Features
11.2 (11_0)
DirectX
10.1 (10_1)
4.4
OpenGL
3.3
1.2
OpenCL
1.1
N/A
Vulkan
N/A
-
CUDA
-
5.0
Shader Model
4.1
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