GeForce GT 440 3GB vs Radeon R7 250X 2GB

Intro

Compare those specifications to the Radeon R7 250X 2GB, which comes with a clock frequency of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon R7 250X 2GB		95 Watts
	Difference: 39 Watts (70%)

Memory Bandwidth

Performance-wise, the Radeon R7 250X 2GB should in theory be quite a bit superior to the GeForce GT 440 3GB overall. (explain)

Radeon R7 250X 2GB		72000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 28800 (67%)

Texel Rate

The Radeon R7 250X 2GB is a lot (more or less 181%) more effective at anisotropic filtering than the GeForce GT 440 3GB. (explain)

Radeon R7 250X 2GB		40000 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 25744 (181%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R7 250X 2GB is superior to the GeForce GT 440 3GB, but only just. (explain)

Radeon R7 250X 2GB		16000 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 1744 (12%)

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 worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum 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 higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.