Radeon RX 7900 XT vs Radeon HD 5450 PCI
We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 512MB VRAM Radeon HD 5450 PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 7900 XT 's Advantages
Released 12 years and 9 months late
Boost Clock2394MHz
More VRAM (20GB vs 512GB)
Larger VRAM bandwidth (800.0GB/s vs 5.328GB/s)
5296 additional rendering cores
Radeon HD 5450 PCI 's Advantages
Lower TDP (19W vs 300W)
Score
Benchmark
FP32 (float)
Radeon RX 7900 XT
+49400%
51480
Radeon HD 5450 PCI
104
Graphics Card
Nov 2022
Release Date
Feb 2010
Navi III
Generation
Evergreen
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCI
Clock Speeds
1387 MHz
Base Clock
-
2394 MHz
Boost Clock
-
2500 MHz
Memory Clock
333 MHz
Memory
20GB
Memory Size
512MB
GDDR6
Memory Type
DDR2
320bit
Memory Bus
64bit
800.0GB/s
Bandwidth
5.328GB/s
Render Config
84
Compute Units
2
5376
Shading Units
80
336
TMUs
8
192
ROPs
4
84
RT Cores
-
256 KB per Array
L1 Cache
8 KB (per CU)
6 MB
L2 Cache
128 KB
80 MB
L3 Cache
-
Theoretical Performance
459.6 GPixel/s
Pixel Rate
2.600 GPixel/s
804.4 GTexel/s
Texture Rate
5.200 GTexel/s
103.0 TFLOPS
FP16 (half)
-
51.48 TFLOPS
FP32 (float)
104.0 GFLOPS
1.609 TFLOPS
FP64 (double)
-
Board Design
300W
TDP
19W
700 W
Suggested PSU
200 W
1x HDMI 2.1a
2x DisplayPort 2.1
1x USB Type-C
Outputs
1x DVI
1x HDMI 1.3a
2x 8-pin
Power Connectors
None
Graphics Processor
Navi 31
GPU Name
Cedar
Navi 31 XT
(215-145000156)
GPU Variant
Cedar PRO
RDNA 3.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
5 nm
Process Size
40 nm
57.7 billion
Transistors
0.292 billion
529 mm²
Die Size
59 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.2
OpenCL
1.2
1.3
Vulkan
N/A
6.7
Shader Model
5.0
