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Radeon HD 4350 vs Radeon HD 5450

Intro

The Radeon HD 4350 has core clock speeds of 575 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 RAM. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 ROPs.

Compare those specifications to the Radeon HD 5450, which has a GPU core clock speed of 650 MHz, and 512 MB of DDR3 RAM set to run at 800 MHz through a 64-bit bus. It also is comprised of 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450 19 Watts
Radeon HD 4350 22 Watts
Difference: 3 Watts (16%)

Memory Bandwidth

The Radeon HD 5450 should in theory perform much faster than the Radeon HD 4350 in general. (explain)

Radeon HD 5450 12800 MB/sec
Radeon HD 4350 8000 MB/sec
Difference: 4800 (60%)

Texel Rate

The Radeon HD 5450 should be a small bit (more or less 13%) more effective at AF than the Radeon HD 4350. (explain)

Radeon HD 5450 5200 Mtexels/sec
Radeon HD 4350 4600 Mtexels/sec
Difference: 600 (13%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 5450 is a better choice, not by a very large margin though. (explain)

Radeon HD 5450 2600 Mpixels/sec
Radeon HD 4350 2300 Mpixels/sec
Difference: 300 (13%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Radeon HD 4350

Radeon HD 5450

Specifications

Display Specifications

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Model Radeon HD 4350 Radeon HD 5450
Manufacturer AMD AMD
Year Sep 30, 2008 February 4, 2010
Code Name RV710 Cedar PRO
Memory 512 MB 512 MB
Core Speed 575 MHz 650 MHz
Memory Speed 1000 MHz 1600 MHz
Power (Max TDP) 22 watts 19 watts
Bandwidth 8000 MB/sec 12800 MB/sec
Texel Rate 4600 Mtexels/sec 5200 Mtexels/sec
Pixel Rate 2300 Mpixels/sec 2600 Mpixels/sec
Unified Shaders 80(16x5) 80(16x5)
Texture Mapping Units 8 8
Render Output Units 4 4
Bus Type DDR2 DDR3
Bus Width 64-bit 64-bit
Fab Process 55 nm 40 nm
Transistors 242 million 292 million
Bus PCIe 2.0 x16, PCI PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Radeon HD 4350

Radeon HD 5450

Comments

2 Responses to “Radeon HD 4350 vs Radeon HD 5450”
Anonymous says:

HD 5450 is a Gud Graphics card for Entry Level gaming.

Radeon HD5450 Vs. HD4350 and Other Shitty Hardware « HD420p says:

[...] be an upgrade. Well I am here to inform you it’s not. I’ve tried to do a few online comparisons and the 5450 should edge it, it does on paper. The reality is. The 4350 turns my mediocre 1stgen [...]

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