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GPU Comparison
AMD Radeon RX 6900 XT vs ATI Radeon HD 5450 PCIe x1
AMD Radeon RX 6900 XT vs ATI Radeon HD 5450 PCIe x1
VS
AMD Radeon RX 6900 XT
ATI Radeon HD 5450 PCIe x1
We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XT and 512MB VRAM Radeon HD 5450 PCIe x1 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6900 XT 's Advantages
Released 10 years and 8 months late
Boost Clock2250MHz
Larger VRAM bandwidth (512.0GB/s vs 8.000GB/s)
5040 additional rendering cores
ATI Radeon HD 5450 PCIe x1 's Advantages
Lower TDP (19W vs 300W)
Score
Benchmark
FP32 (float)
Radeon RX 6900 XT
+22053%
23.04 TFLOPS
Radeon HD 5450 PCIe x1
0.104 TFLOPS
Radeon RX 6900 XT
VS
Radeon HD 5450 PCIe x1
Graphics Card
Oct 2020
Release Date
Feb 2010
Navi II
Generation
Evergreen
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x1
Clock Speeds
1825 MHz
Base Clock
-
2250 MHz
Boost Clock
-
2000 MHz
Memory Clock
500 MHz
Memory
16GB
Memory Size
512MB
GDDR6
Memory Type
DDR3
256bit
Memory Bus
64bit
512.0GB/s
Bandwidth
8.000GB/s
Render Config
-
SM Count
-
80
Compute Units
2
5120
Shading Units
80
320
TMUs
8
128
ROPs
4
-
Tensor Cores
-
80
RT Cores
-
128 KB per Array
L1 Cache
8 KB (per CU)
4 MB
L2 Cache
128 KB
Theoretical Performance
288.0 GPixel/s
Pixel Rate
2.600 GPixel/s
720.0 GTexel/s
Texture Rate
5.200 GTexel/s
46.08 TFLOPS
FP16 (half)
-
23.04 TFLOPS
FP32 (float)
104.0 GFLOPS
1440 GFLOPS
FP64 (double)
-
Graphics Processor
Navi 21
GPU Name
Cedar
Navi 21 XTX (215-121000167)
GPU Variant
Cedar PRO
RDNA 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
7 nm
Process Size
40 nm
26.8 billion
Transistors
0.292 billion
520 mm²
Die Size
59 mm²
Board Design
300W
TDP
19W
700 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
-
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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