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GPU Comparison
AMD Radeon RX 6800 vs AMD Radeon HD 6450
AMD Radeon RX 6800 vs AMD Radeon HD 6450
VS
AMD Radeon RX 6800
AMD Radeon HD 6450
We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 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 RX 6800 's Advantages
Released 9 years and 6 months late
Boost Clock2105MHz
Larger VRAM bandwidth (512.0GB/s vs 25.60GB/s)
3680 additional rendering cores
AMD Radeon HD 6450 's Advantages
Lower TDP (18W vs 250W)
Score
Benchmark
FP32 (float)
Radeon RX 6800
+7985%
16.17 TFLOPS
Radeon HD 6450
0.2 TFLOPS
Radeon RX 6800
VS
Radeon HD 6450
Graphics Card
Oct 2020
Release Date
Apr 2011
Navi II
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1700 MHz
Base Clock
-
2105 MHz
Boost Clock
-
2000 MHz
Memory Clock
800 MHz
Memory
16GB
Memory Size
512MB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
64bit
512.0GB/s
Bandwidth
25.60GB/s
Render Config
-
SM Count
-
60
Compute Units
2
3840
Shading Units
160
240
TMUs
8
96
ROPs
4
-
Tensor Cores
-
60
RT Cores
-
128 KB per Array
L1 Cache
8 KB (per CU)
4 MB
L2 Cache
128 KB
Theoretical Performance
202.1 GPixel/s
Pixel Rate
2.500 GPixel/s
505.2 GTexel/s
Texture Rate
5.000 GTexel/s
32.33 TFLOPS
FP16 (half)
-
16.17 TFLOPS
FP32 (float)
200.0 GFLOPS
1010 GFLOPS
FP64 (double)
-
Graphics Processor
Navi 21
GPU Name
Caicos
Navi 21 XL (215-121000187)
GPU Variant
Caicos PRO
RDNA 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
7 nm
Process Size
40 nm
26.8 billion
Transistors
0.37 billion
520 mm²
Die Size
67 mm²
Board Design
250W
TDP
18W
600 W
Suggested PSU
200 W
1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
2x 8-pin
Power Connectors
None
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.3
Vulkan
N/A
-
CUDA
-
6.5
Shader Model
5.0
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