GeForce 8800 GT 512MB vs Radeon RX 580

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
Radeon RX 580		185 Watts
	Difference: 80 Watts (76%)

Memory Bandwidth

The Radeon RX 580 should in theory perform quite a bit faster than the GeForce 8800 GT 512MB overall. (explain)

Radeon RX 580		262144 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 204544 (355%)

Texel Rate

The Radeon RX 580 will be quite a bit (more or less 439%) more effective at texture filtering than the GeForce 8800 GT 512MB. (explain)

Radeon RX 580		181008 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 147408 (439%)

Pixel Rate

The Radeon RX 580 should be a lot (approximately 319%) faster with regards to AA than the GeForce 8800 GT 512MB, and able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 580		40224 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 30624 (319%)

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 data (measured in MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.