GeForce GT 240 GDDR5 1GB vs Radeon RX 580

Intro

Compare those specs to the Radeon RX 580, which has core clock speeds of 1257 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR5 RAM. It features 2304 SPUs as well as 144 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
Radeon RX 580		185 Watts
	Difference: 115 Watts (164%)

Memory Bandwidth

The Radeon RX 580, in theory, should perform quite a bit faster than the GeForce GT 240 GDDR5 1GB in general. (explain)

Radeon RX 580		262144 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 207744 (382%)

Texel Rate

The Radeon RX 580 will be much (about 928%) more effective at anisotropic filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Radeon RX 580		181008 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 163408 (928%)

Pixel Rate

The Radeon RX 580 is much (about 814%) more effective at AA than the GeForce GT 240 GDDR5 1GB, and will be capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 580		40224 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 35824 (814%)

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 max amount of data (measured in MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.