Radeon HD 6570 (OEM) 2GB vs Radeon R9 390 8G

Intro

Compare all that to the Radeon R9 390 8G, which has core speeds of 1000 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 RAM. It features 2560 SPUs as well as 160 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB		50 Watts
Radeon R9 390 8G		275 Watts
	Difference: 225 Watts (450%)

Memory Bandwidth

As far as performance goes, the Radeon R9 390 8G should theoretically be a lot superior to the Radeon HD 6570 (OEM) 2GB in general. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 320000 (500%)

Texel Rate

The Radeon R9 390 8G is a lot (about 926%) more effective at AF than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 144400 (926%)

Pixel Rate

The Radeon R9 390 8G will be much (more or less 1131%) more effective at anti-aliasing than the Radeon HD 6570 (OEM) 2GB, and will be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		5200 Mpixels/sec
	Difference: 58800 (1131%)

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 max amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.