GeForce GTX 650 vs Radeon RX 480 4GB

Intro

Compare that to the Radeon RX 480 4GB, which makes use of a 14 nm design. AMD has clocked the core frequency at 1120 MHz. The GDDR5 memory runs at a frequency of 1750 MHz on this particular card. It features 2304 SPUs as well as 144 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

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

In theory, the Radeon RX 480 4GB is 187% faster than the GeForce GTX 650 overall, because of its greater data rate. (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 quite a bit (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 is much (more or less 112%) more effective at full screen anti-aliasing than the GeForce GTX 650, and able to handle higher screen resolutions while still performing well. (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: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. 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 memory bandwidth is, the lower the ability to get to the max fill rate.