GeForce 9400 GT 256MB vs Radeon RX 590

Intro

Compare all of that to the Radeon RX 590, which features a clock speed of 1469 MHz and a GDDR5 memory speed of 2000 MHz. It also uses a 256-bit memory bus, and makes use of a 12 nm design. It is comprised of 2304 SPUs, 144 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9400 GT 256MB		50 Watts
Radeon RX 590		175 Watts
	Difference: 125 Watts (250%)

Memory Bandwidth

The Radeon RX 590, in theory, should be quite a bit faster than the GeForce 9400 GT 256MB in general. (explain)

Radeon RX 590		262144 MB/sec
GeForce 9400 GT 256MB		12800 MB/sec
	Difference: 249344 (1948%)

Texel Rate

The Radeon RX 590 is quite a bit (about 4708%) better at anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

Radeon RX 590		211536 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 207136 (4708%)

Pixel Rate

The Radeon RX 590 is much (about 2037%) better at AA than the GeForce 9400 GT 256MB, and also able to handle higher screen resolutions better. (explain)

Radeon RX 590		47008 Mpixels/sec
GeForce 9400 GT 256MB		2200 Mpixels/sec
	Difference: 44808 (2037%)

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 transferred over the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If 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 number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number 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 fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.