Radeon HD 4350 vs Radeon HD 5450

Intro

Compare those specs to the Radeon HD 5450, which makes use of a 40 nm design. AMD has clocked the core frequency at 650 MHz. The DDR3 memory works at a frequency of 800 MHz on this model. It features 80(16x5) SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

Theoretically, the Radeon HD 5450 should perform a lot 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 will be just a bit (more or less 13%) faster with regards to anisotropic filtering than the Radeon HD 4350. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 5450 is the winner, though not by far. (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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.