Geforce GTX 770 vs Radeon HD 6850

Intro

Compare those specs to the Radeon HD 6850, which features GPU core speed of 775 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 256-bit bus. It also is comprised of 960 SPUs, 48 Texture Address Units, and 32 ROPs.

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 770		7854 points
Radeon HD 6850		2395 points
	Difference: 5459 (228%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850		127 Watts
Geforce GTX 770		230 Watts
	Difference: 103 Watts (81%)

Memory Bandwidth

The Geforce GTX 770 should in theory be quite a bit faster than the Radeon HD 6850 in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 6850		128000 MB/sec
	Difference: 96384 (75%)

Texel Rate

The Geforce GTX 770 will be much (more or less 260%) more effective at AF than the Radeon HD 6850. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 6850		37200 Mtexels/sec
	Difference: 96688 (260%)

Pixel Rate

The Geforce GTX 770 will be a lot (more or less 35%) more effective at AA than the Radeon HD 6850, and also should be able to handle higher screen resolutions better. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 6850		24800 Mpixels/sec
	Difference: 8672 (35%)

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 (in units of MB per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core 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 in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure 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 fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.