GeForce GTX 465 vs Radeon HD 6850

Intro

Compare all that to the Radeon HD 6850, which features GPU core speed of 775 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 256-bit bus. It also features 960 SPUs, 48 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850		127 Watts
GeForce GTX 465		200 Watts
	Difference: 73 Watts (57%)

Memory Bandwidth

In theory, the Radeon HD 6850 should be 25% quicker than the GeForce GTX 465 in general, due to its higher data rate. (explain)

Radeon HD 6850		128000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 25408 (25%)

Texel Rate

The Radeon HD 6850 should be much (about 39%) more effective at texture filtering than the GeForce GTX 465. (explain)

Radeon HD 6850		37200 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 10492 (39%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6850 is a better choice, by a large margin. (explain)

Radeon HD 6850		24800 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 5376 (28%)

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 megabytes per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are 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 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 could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.