Radeon HD 5850 vs Radeon HD 6570 (OEM) 2GB

Intro

Compare those specifications to the Radeon HD 6570 (OEM) 2GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 650 MHz. The GDDR5 memory works at a speed of 1000 MHz on this particular model. It features 480 SPUs along with 24 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB		50 Watts
Radeon HD 5850		151 Watts
	Difference: 101 Watts (202%)

Memory Bandwidth

Performance-wise, the Radeon HD 5850 should theoretically be quite a bit superior to the Radeon HD 6570 (OEM) 2GB in general. (explain)

Radeon HD 5850		128000 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 64000 (100%)

Texel Rate

The Radeon HD 5850 should be much (about 235%) more effective at AF than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon HD 5850		52200 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 36600 (235%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 5850 is superior to the Radeon HD 6570 (OEM) 2GB, by far. (explain)

Radeon HD 5850		23200 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its 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 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.