GeForce GTS 150 vs Radeon RX 580

Intro

Compare all that to the Radeon RX 580, which has a clock speed of 1257 MHz and a GDDR5 memory speed of 2000 MHz. It also features a 256-bit memory bus, and makes use of a 14 nm design. It is made up of 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 150		141 Watts
Radeon RX 580		185 Watts
	Difference: 44 Watts (31%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 580 should be 719% faster than the GeForce GTS 150 overall, because of its higher bandwidth. (explain)

Radeon RX 580		262144 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 230144 (719%)

Texel Rate

The Radeon RX 580 is much (approximately 282%) faster with regards to AF than the GeForce GTS 150. (explain)

Radeon RX 580		181008 Mtexels/sec
GeForce GTS 150		47360 Mtexels/sec
	Difference: 133648 (282%)

Pixel Rate

The Radeon RX 580 should be quite a bit (approximately 240%) better at anti-aliasing than the GeForce GTS 150, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon RX 580		40224 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 28384 (240%)

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 data (in units of megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.