GeForce GT 440 3GB vs Radeon R9 380 2G

Intro

Compare those specifications to the Radeon R9 380 2G, which comes with clock speeds of 970 MHz on the GPU, and 1425 MHz on the 2048 MB of GDDR5 memory. It features 1792 SPUs along with 112 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon R9 380 2G		190 Watts
	Difference: 134 Watts (239%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 2G should perform a lot faster than the GeForce GT 440 3GB in general. (explain)

Radeon R9 380 2G		182400 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 139200 (322%)

Texel Rate

The Radeon R9 380 2G will be much (more or less 662%) more effective at AF than the GeForce GT 440 3GB. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 94384 (662%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 380 2G is superior to the GeForce GT 440 3GB, by a large margin. (explain)

Radeon R9 380 2G		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: Memory bandwidth is the max amount of information (measured in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.