GeForce 8800 GTX vs Radeon RX 550

Intro

Compare all that to the Radeon RX 550, which comes with a clock speed of 1100 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 128-bit bus, and makes use of a 14 nm design. It is comprised of 512 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
GeForce 8800 GTX		155 Watts
	Difference: 105 Watts (210%)

Memory Bandwidth

The Radeon RX 550 should in theory be much faster than the GeForce 8800 GTX overall. (explain)

Radeon RX 550		114688 MB/sec
GeForce 8800 GTX		86400 MB/sec
	Difference: 28288 (33%)

Texel Rate

The GeForce 8800 GTX will be a bit (approximately 5%) better at anisotropic filtering than the Radeon RX 550. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 1600 (5%)

Pixel Rate

The Radeon RX 550 is quite a bit (about 28%) more effective at FSAA than the GeForce 8800 GTX, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 550		17600 Mpixels/sec
GeForce 8800 GTX		13800 Mpixels/sec
	Difference: 3800 (28%)

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 over the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If 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, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.