GeForce GTS 250 1GB vs Radeon RX 470

Intro

Compare those specifications to the Radeon RX 470, which uses a 14 nm design. AMD has set the core speed at 926 MHz. The GDDR5 RAM works at a speed of 1650 MHz on this card. 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)

Radeon RX 470		120 Watts
GeForce GTS 250 1GB		145 Watts
	Difference: 25 Watts (21%)

Memory Bandwidth

The Radeon RX 470 should in theory be a lot faster than the GeForce GTS 250 1GB in general. (explain)

Radeon RX 470		211200 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 140800 (200%)

Texel Rate

The Radeon RX 470 is much (more or less 151%) better at texture filtering than the GeForce GTS 250 1GB. (explain)

Radeon RX 470		118528 Mtexels/sec
GeForce GTS 250 1GB		47232 Mtexels/sec
	Difference: 71296 (151%)

Pixel Rate

The Radeon RX 470 is quite a bit (more or less 151%) better at FSAA than the GeForce GTS 250 1GB, and able to handle higher resolutions more effectively. (explain)

Radeon RX 470		29632 Mpixels/sec
GeForce GTS 250 1GB		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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video 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 maximum amount of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 potential to reach the maximum fill rate.