GeForce 8300 GS (OEM) vs Radeon HD 5450

Intro

Compare those specs to the Radeon HD 5450, which features a GPU core clock speed of 650 MHz, and 512 MB of DDR3 memory set to run at 800 MHz through a 64-bit bus. It also features 80(16x5) Stream Processors, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce 8300 GS (OEM)		40 Watts
	Difference: 21 Watts (111%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5450 should perform much faster than the GeForce 8300 GS (OEM) in general. (explain)

Radeon HD 5450		12800 MB/sec
GeForce 8300 GS (OEM)		6400 MB/sec
	Difference: 6400 (100%)

Texel Rate

The Radeon HD 5450 is a lot (about 189%) more effective at texture filtering than the GeForce 8300 GS (OEM). (explain)

Radeon HD 5450		5200 Mtexels/sec
GeForce 8300 GS (OEM)		1800 Mtexels/sec
	Difference: 3400 (189%)

Pixel Rate

The Radeon HD 5450 is much (approximately 189%) more effective at anti-aliasing than the GeForce 8300 GS (OEM), and also able to handle higher resolutions more effectively. (explain)

Radeon HD 5450		2600 Mpixels/sec
GeForce 8300 GS (OEM)		900 Mpixels/sec
	Difference: 1700 (189%)

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 max amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.