GeForce GT 440 3GB vs Radeon R9 280X

Intro

Compare those specs to the Radeon R9 280X, which features clock speeds of 850 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon R9 280X		250 Watts
	Difference: 194 Watts (346%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 280X should be 567% faster than the GeForce GT 440 3GB overall, because of its higher data rate. (explain)

Radeon R9 280X		288000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 244800 (567%)

Texel Rate

The Radeon R9 280X should be quite a bit (approximately 663%) faster with regards to AF than the GeForce GT 440 3GB. (explain)

Radeon R9 280X		108800 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 94544 (663%)

Pixel Rate

The Radeon R9 280X will be quite a bit (approximately 91%) faster with regards to AA than the GeForce GT 440 3GB, and should be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 280X		27200 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 12944 (91%)

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 largest amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per 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 filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.