GeForce GTX 260 vs Radeon HD 5450

Intro

Compare all that to the Radeon HD 5450, which uses a 40 nm design. AMD has set the core frequency at 650 MHz. The DDR3 memory works at a speed of 800 MHz on this specific model. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 260		182 Watts
	Difference: 163 Watts (858%)

Memory Bandwidth

In theory, the GeForce GTX 260 is 774% quicker than the Radeon HD 5450 in general, due to its greater data rate. (explain)

GeForce GTX 260		111888 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 99088 (774%)

Texel Rate

The GeForce GTX 260 should be a lot (approximately 609%) more effective at texture filtering than the Radeon HD 5450. (explain)

GeForce GTX 260		36864 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 31664 (609%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 260 is the winner, by a large margin. (explain)

GeForce GTX 260		16128 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 13528 (520%)

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: Bandwidth is the max amount of information (measured in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it must 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 amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.