GeForce GTX 650 vs Radeon RX 480 4GB

Intro

Compare those specs to the Radeon RX 480 4GB, which comes with a GPU core clock speed of 1120 MHz, and 4096 MB of GDDR5 memory running at 1750 MHz through a 256-bit bus. It also features 2304 Stream Processors, 144 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon RX 480 4GB		150 Watts
	Difference: 86 Watts (134%)

Memory Bandwidth

Performance-wise, the Radeon RX 480 4GB should theoretically be much better than the GeForce GTX 650 in general. (explain)

Radeon RX 480 4GB		229376 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 149376 (187%)

Texel Rate

The Radeon RX 480 4GB is a lot (approximately 376%) better at texture filtering than the GeForce GTX 650. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 127424 (376%)

Pixel Rate

The Radeon RX 480 4GB should be a lot (about 112%) better at anti-aliasing than the GeForce GTX 650, and also capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 18912 (112%)

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 largest amount of data (measured in megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.