GeForce GT 450 (OEM) vs Radeon HD 4550 256MB

Intro

Compare all of that to the Radeon HD 4550 256MB, which comes with clock speeds of 600 MHz on the GPU, and 800 MHz on the 256 MB of DDR3 RAM. It features 80(16x5) SPUs as well as 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 4550 256MB		25 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 81 Watts (324%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) will be 650% faster than the Radeon HD 4550 256MB overall, because of its higher data rate. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 83200 (650%)

Texel Rate

The GeForce GT 450 (OEM) will be quite a bit (about 295%) better at texture filtering than the Radeon HD 4550 256MB. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 14160 (295%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 450 (OEM) is superior to the Radeon HD 4550 256MB, by far. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 16560 (690%)

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 maximum amount of data (counted in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.