GeForce GTX 1050 3GB vs Radeon HD 4890 1GB

Intro

Compare all of that to the Radeon HD 4890 1GB, which has core clock speeds of 1000 MHz on the GPU, and 975 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1050 3GB		75 Watts
Radeon HD 4890 1GB		190 Watts
	Difference: 115 Watts (153%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4890 1GB is 45% quicker than the GeForce GTX 1050 3GB overall, due to its higher bandwidth. (explain)

Radeon HD 4890 1GB		124800 MB/sec
GeForce GTX 1050 3GB		86016 MB/sec
	Difference: 38784 (45%)

Texel Rate

The GeForce GTX 1050 3GB is a lot (about 67%) more effective at anisotropic filtering than the Radeon HD 4890 1GB. (explain)

GeForce GTX 1050 3GB		66816 Mtexels/sec
Radeon HD 4890 1GB		40000 Mtexels/sec
	Difference: 26816 (67%)

Pixel Rate

The GeForce GTX 1050 3GB should be a lot (approximately 109%) better at full screen anti-aliasing than the Radeon HD 4890 1GB, and also should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 1050 3GB		33408 Mpixels/sec
Radeon HD 4890 1GB		16000 Mpixels/sec
	Difference: 17408 (109%)

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 max amount of data (in units of megabytes per second) that can be transferred 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 RAM, it should be multiplied by 2 again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units by the core 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 most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.