GeForce GTX 460 1GB vs Radeon HD 5450

Intro

Compare all that 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 is set to run at a frequency of 800 MHz on this specific model. It features 80(16x5) SPUs as well as 8 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 141 Watts (742%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 460 1GB should in theory be quite a bit superior to the Radeon HD 5450 overall. (explain)

GeForce GTX 460 1GB		115200 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 102400 (800%)

Texel Rate

The GeForce GTX 460 1GB will be quite a bit (more or less 627%) faster with regards to anisotropic filtering than the Radeon HD 5450. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 32600 (627%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 460 1GB is superior to the Radeon HD 5450, by a large margin. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 19000 (731%)

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 maximum amount of information (in units of MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.