GeForce GTX 1050 vs Radeon HD 4890 2GB

Intro

Compare those specs to the Radeon HD 4890 2GB, which has core speeds of 1000 MHz on the GPU, and 975 MHz on the 2048 MB of GDDR5 memory. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1050		75 Watts
Radeon HD 4890 2GB		190 Watts
	Difference: 115 Watts (153%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4890 2GB should be 9% faster than the GeForce GTX 1050 in general, because of its greater data rate. (explain)

Radeon HD 4890 2GB		124800 MB/sec
GeForce GTX 1050		114688 MB/sec
	Difference: 10112 (9%)

Texel Rate

The GeForce GTX 1050 is a lot (approximately 35%) more effective at anisotropic filtering than the Radeon HD 4890 2GB. (explain)

GeForce GTX 1050		54160 Mtexels/sec
Radeon HD 4890 2GB		40000 Mtexels/sec
	Difference: 14160 (35%)

Pixel Rate

The GeForce GTX 1050 is much (more or less 171%) better at FSAA than the Radeon HD 4890 2GB, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 1050		43328 Mpixels/sec
Radeon HD 4890 2GB		16000 Mpixels/sec
	Difference: 27328 (171%)

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 information (counted in MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 can be processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated 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 filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.