GeForce 9400 GT 256MB vs Radeon RX 550

Intro

Compare those specs to the Radeon RX 550, which comes with GPU core speed of 1100 MHz, and 2048 MB of GDDR5 RAM set to run at 1750 MHz through a 128-bit bus. It also features 512 Stream Processors, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the Radeon RX 550 should perform a lot faster than the GeForce 9400 GT 256MB overall. (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%) better at anisotropic filtering 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 should be much (about 700%) faster with regards to anti-aliasing than the GeForce 9400 GT 256MB, and should be capable of handling higher resolutions without losing too much performance. (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: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out 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 handling 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 the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. 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 many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.