Radeon HD 6450 (OEM) vs Radeon RX 590

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon RX 590		175 Watts
	Difference: 144 Watts (465%)

Memory Bandwidth

Performance-wise, the Radeon RX 590 should theoretically be much better than the Radeon HD 6450 (OEM) in general. (explain)

Radeon RX 590		262144 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 249344 (1948%)

Texel Rate

The Radeon RX 590 will be much (more or less 4131%) more effective at texture filtering than the Radeon HD 6450 (OEM). (explain)

Radeon RX 590		211536 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 206536 (4131%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 590 is the winner, by far. (explain)

Radeon RX 590		47008 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 44508 (1780%)

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 maximum amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at 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 the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.