GeForce GT 240 GDDR5 1GB vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which features clock speeds of 926 MHz on the GPU, and 1650 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 50 Watts (71%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 4GB should be 288% faster than the GeForce GT 240 GDDR5 1GB in general, due to its greater bandwidth. (explain)

Radeon RX 470 4GB		211200 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 156800 (288%)

Texel Rate

The Radeon RX 470 4GB is quite a bit (approximately 573%) better at texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 100928 (573%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 470 4GB is superior to the GeForce GT 240 GDDR5 1GB, and very much so. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 25232 (573%)

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 data (in units of MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 are processed per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the 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 most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs 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 also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.