Radeon HD 6570 (OEM) 1GB vs Radeon HD 6850

Intro

Compare those specifications to the Radeon HD 6850, which makes use of a 40 nm design. AMD has clocked the core speed at 775 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this model. It features 960 SPUs as well as 48 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 6850		2395 points
Radeon HD 6570 (OEM) 1GB		850 points
	Difference: 1545 (182%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 1GB		50 Watts
Radeon HD 6850		127 Watts
	Difference: 77 Watts (154%)

Memory Bandwidth

In theory, the Radeon HD 6850 will be 344% quicker than the Radeon HD 6570 (OEM) 1GB in general, due to its greater bandwidth. (explain)

Radeon HD 6850		128000 MB/sec
Radeon HD 6570 (OEM) 1GB		28800 MB/sec
	Difference: 99200 (344%)

Texel Rate

The Radeon HD 6850 should be much (about 138%) more effective at texture filtering than the Radeon HD 6570 (OEM) 1GB. (explain)

Radeon HD 6850		37200 Mtexels/sec
Radeon HD 6570 (OEM) 1GB		15600 Mtexels/sec
	Difference: 21600 (138%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6850 is the winner, by far. (explain)

Radeon HD 6850		24800 Mpixels/sec
Radeon HD 6570 (OEM) 1GB		5200 Mpixels/sec
	Difference: 19600 (377%)

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 largest amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the 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 number of texture map elements (texels) that are applied per second. This number 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could 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 Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.