GeForce GT 240 GDDR5 1GB vs Radeon RX 550

Intro

Compare those specs to the Radeon RX 550, which comes with a GPU core clock speed of 1100 MHz, and 2048 MB of GDDR5 RAM set to run at 1750 MHz through a 128-bit bus. It also is made up of 512 Stream Processors, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
GeForce GT 240 GDDR5 1GB		70 Watts
	Difference: 20 Watts (40%)

Memory Bandwidth

The Radeon RX 550, in theory, should be quite a bit faster than the GeForce GT 240 GDDR5 1GB overall. (explain)

Radeon RX 550		114688 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 60288 (111%)

Texel Rate

The Radeon RX 550 is much (about 100%) more effective at texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Radeon RX 550		35200 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 17600 (100%)

Pixel Rate

The Radeon RX 550 is quite a bit (more or less 300%) better at FSAA than the GeForce GT 240 GDDR5 1GB, and will be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 550		17600 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 13200 (300%)

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 transported over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines 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 rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.