GeForce GT 450 (OEM) vs Radeon HD 4550 512MB

Intro

Compare those specs to the Radeon HD 4550 512MB, which comes with a core clock speed of 600 MHz and a GDDR3 memory speed of 800 MHz. It also makes use of a 64-bit bus, and makes use of a 55 nm design. It is made up of 80(16x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB		25 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 81 Watts (324%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) is 650% quicker than the Radeon HD 4550 512MB overall, due to its greater bandwidth. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 83200 (650%)

Texel Rate

The GeForce GT 450 (OEM) is quite a bit (about 295%) faster with regards to anisotropic filtering than the Radeon HD 4550 512MB. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 14160 (295%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GT 450 (OEM) is superior to the Radeon HD 4550 512MB, and very much so. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 4550 512MB		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 megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 number 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 better the texel rate, the better the 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 maximum number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.