GeForce 9400 GT 256MB vs Radeon RX 560

Intro

Compare all of that to the Radeon RX 560, which has a core clock speed of 1175 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 1024 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9400 GT 256MB		50 Watts
Radeon RX 560		80 Watts
	Difference: 30 Watts (60%)

Memory Bandwidth

Performance-wise, the Radeon RX 560 should in theory be quite a bit superior to the GeForce 9400 GT 256MB overall. (explain)

Radeon RX 560		114688 MB/sec
GeForce 9400 GT 256MB		12800 MB/sec
	Difference: 101888 (796%)

Texel Rate

The Radeon RX 560 should be a lot (approximately 1609%) faster with regards to anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

Radeon RX 560		75200 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 70800 (1609%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 560 is the winner, by a large margin. (explain)

Radeon RX 560		18800 Mpixels/sec
GeForce 9400 GT 256MB		2200 Mpixels/sec
	Difference: 16600 (755%)

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 MB per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units by the core 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka 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 potential to reach the maximum fill rate.