GeForce GTX 650 vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which uses a 14 nm design. AMD has set the core frequency at 926 MHz. The GDDR5 RAM is set to run at a frequency of 1650 MHz on this model. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 56 Watts (88%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 4GB should be much faster than the GeForce GTX 650 in general. (explain)

Radeon RX 470 4GB		211200 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 131200 (164%)

Texel Rate

The Radeon RX 470 4GB will be a lot (more or less 250%) more effective at anisotropic filtering than the GeForce GTX 650. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 84672 (250%)

Pixel Rate

The Radeon RX 470 4GB will be quite a bit (about 75%) more effective at FSAA than the GeForce GTX 650, and will be able to handle higher resolutions more effectively. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 12704 (75%)

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 (measured in megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.