GeForce GTS 250 512MB vs Radeon RX 470

Intro

Compare that to the Radeon RX 470, which features a clock speed of 926 MHz and a GDDR5 memory speed of 1650 MHz. It also features a 256-bit bus, and uses a 14 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470		120 Watts
GeForce GTS 250 512MB		145 Watts
	Difference: 25 Watts (21%)

Memory Bandwidth

Performance-wise, the Radeon RX 470 should in theory be quite a bit superior to the GeForce GTS 250 512MB in general. (explain)

Radeon RX 470		211200 MB/sec
GeForce GTS 250 512MB		70400 MB/sec
	Difference: 140800 (200%)

Texel Rate

The Radeon RX 470 is a lot (about 151%) more effective at anisotropic filtering than the GeForce GTS 250 512MB. (explain)

Radeon RX 470		118528 Mtexels/sec
GeForce GTS 250 512MB		47232 Mtexels/sec
	Difference: 71296 (151%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 470 is a better choice, by far. (explain)

Radeon RX 470		29632 Mpixels/sec
GeForce GTS 250 512MB		11808 Mpixels/sec
	Difference: 17824 (151%)

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 largest amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. 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 texture map elements (texels) that can be applied per second. This number 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. 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 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 reach the maximum fill rate.