Geforce GTX 770 vs Radeon HD 6850

Intro

Compare all that to the Radeon HD 6850, which uses a 40 nm design. AMD has set the core speed at 775 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this particular model. It features 960 SPUs as well as 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

As far as performance goes, the Geforce GTX 770 should in theory be much better 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 is a lot (about 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 is much (approximately 35%) faster with regards to FSAA 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: Bandwidth is the maximum amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at 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 chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units 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 fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.