GeForce GT 240 GDDR5 1GB vs Radeon RX 470

Intro

Compare that to the Radeon RX 470, which comes with GPU core speed of 926 MHz, and 8192 MB of GDDR5 RAM running at 1650 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 TAUs, 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		120 Watts
	Difference: 50 Watts (71%)

Memory Bandwidth

Performance-wise, the Radeon RX 470 should theoretically be much better than the GeForce GT 240 GDDR5 1GB in general. (explain)

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

Texel Rate

The Radeon RX 470 will be a lot (about 573%) faster with regards to texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

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

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 470 is the winner, and very much so. (explain)

Radeon RX 470		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 transferred over the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could 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 colour ROPs by the clock speed of the card. 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.