GeForce GT 440 3GB vs Radeon HD 4770

Intro

Compare those specifications to the Radeon HD 4770, which has core speeds of 750 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs as well as 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon HD 4770		80 Watts
	Difference: 24 Watts (43%)

Memory Bandwidth

The Radeon HD 4770, in theory, should be a little bit faster than the GeForce GT 440 3GB overall. (explain)

Radeon HD 4770		51200 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 8000 (19%)

Texel Rate

The Radeon HD 4770 will be quite a bit (about 68%) better at AF than the GeForce GT 440 3GB. (explain)

Radeon HD 4770		24000 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 9744 (68%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GT 440 3GB is the winner, though only just barely. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
Radeon HD 4770		12000 Mpixels/sec
	Difference: 2256 (19%)

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 (in units of MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units of the card by the core 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. 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 many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.