Geforce GTX 780 vs Radeon RX 550

Intro

Compare all of that to the Radeon RX 550, which has a core clock frequency of 1100 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 128-bit bus, and uses a 14 nm design. It is made up of 512 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Geforce GTX 780		10082 points
Radeon RX 550		3507 points
	Difference: 6575 (187%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Geforce GTX 780		250 Watts
	Difference: 200 Watts (400%)

Memory Bandwidth

In theory, the Geforce GTX 780 should perform much faster than the Radeon RX 550 overall. (explain)

Geforce GTX 780		288384 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 173696 (151%)

Texel Rate

The Geforce GTX 780 is a lot (about 371%) more effective at anisotropic filtering than the Radeon RX 550. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 130496 (371%)

Pixel Rate

The Geforce GTX 780 should be much (approximately 135%) faster with regards to FSAA than the Radeon RX 550, and able to handle higher screen resolutions without losing too much performance. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon RX 550		17600 Mpixels/sec
	Difference: 23824 (135%)

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 (measured in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 chip could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.