GeForce 9400 GT 256MB vs Radeon RX 550

Intro

Compare those specifications to the Radeon RX 550, which has core speeds of 1100 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 memory. It features 512 SPUs along with 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The Radeon RX 550 should in theory be a lot faster than the GeForce 9400 GT 256MB in general. (explain)

Radeon RX 550		114688 MB/sec
GeForce 9400 GT 256MB		12800 MB/sec
	Difference: 101888 (796%)

Texel Rate

The Radeon RX 550 should be a lot (about 700%) more effective at AF than the GeForce 9400 GT 256MB. (explain)

Radeon RX 550		35200 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 30800 (700%)

Pixel Rate

The Radeon RX 550 will be a lot (more or less 700%) better at AA than the GeForce 9400 GT 256MB, and should be able to handle higher resolutions while still performing well. (explain)

Radeon RX 550		17600 Mpixels/sec
GeForce 9400 GT 256MB		2200 Mpixels/sec
	Difference: 15400 (700%)

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 moved across the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the 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 number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.