Geforce GTX 690 vs Radeon HD 6850

Intro

Compare those specs to the Radeon HD 6850, which comes with a clock speed of 775 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It is comprised of 960 SPUs, 48 TAUs, and 32 Raster Operation 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

Geforce GTX 690		13111 points
Radeon HD 6850		2395 points
	Difference: 10716 (447%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850		127 Watts
Geforce GTX 690		300 Watts
	Difference: 173 Watts (136%)

Memory Bandwidth

Performance-wise, the Geforce GTX 690 should in theory be a lot better than the Radeon HD 6850 in general. (explain)

Geforce GTX 690		384512 MB/sec
Radeon HD 6850		128000 MB/sec
	Difference: 256512 (200%)

Texel Rate

The Geforce GTX 690 should be a lot (about 530%) better at texture filtering than the Radeon HD 6850. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon HD 6850		37200 Mtexels/sec
	Difference: 197040 (530%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 690 is a better choice, by far. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon HD 6850		24800 Mpixels/sec
	Difference: 33760 (136%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling 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 video 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 Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.