GeForce GT 440 3GB vs Radeon R9 380X

Intro

Compare all that to the Radeon R9 380X, which features GPU core speed of 970 MHz, and 4096 MB of GDDR5 RAM running at 1425 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon R9 380X		190 Watts
	Difference: 134 Watts (239%)

Memory Bandwidth

The Radeon R9 380X, in theory, should be much faster than the GeForce GT 440 3GB overall. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 139200 (322%)

Texel Rate

The Radeon R9 380X should be quite a bit (more or less 771%) more effective at anisotropic filtering than the GeForce GT 440 3GB. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 109904 (771%)

Pixel Rate

The Radeon R9 380X will be quite a bit (about 118%) more effective at full screen anti-aliasing than the GeForce GT 440 3GB, and also capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 16784 (118%)

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 largest amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must 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 AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). 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 ability to reach the maximum fill rate.