Radeon HD 5850 vs Radeon HD 6570 (OEM) 1GB

Intro

Compare those specifications to the Radeon HD 6570 (OEM) 1GB, which has a core clock frequency of 650 MHz and a GDDR3 memory speed of 900 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It is made up of 480 SPUs, 24 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 1GB		50 Watts
Radeon HD 5850		151 Watts
	Difference: 101 Watts (202%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5850 will be 344% quicker than the Radeon HD 6570 (OEM) 1GB in general, because of its greater data rate. (explain)

Radeon HD 5850		128000 MB/sec
Radeon HD 6570 (OEM) 1GB		28800 MB/sec
	Difference: 99200 (344%)

Texel Rate

The Radeon HD 5850 should be a lot (about 235%) faster with regards to texture filtering than the Radeon HD 6570 (OEM) 1GB. (explain)

Radeon HD 5850		52200 Mtexels/sec
Radeon HD 6570 (OEM) 1GB		15600 Mtexels/sec
	Difference: 36600 (235%)

Pixel Rate

The Radeon HD 5850 is a lot (more or less 346%) faster with regards to FSAA than the Radeon HD 6570 (OEM) 1GB, and should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 5850		23200 Mpixels/sec
Radeon HD 6570 (OEM) 1GB		5200 Mpixels/sec
	Difference: 18000 (346%)

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 (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.