Geforce GTX 770 vs Radeon HD 6870

Intro

Compare all of that to the Radeon HD 6870, which features clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 1120 SPUs along with 56 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 6870		2870 points
	Difference: 4984 (174%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6870		151 Watts
Geforce GTX 770		230 Watts
	Difference: 79 Watts (52%)

Memory Bandwidth

In theory, the Geforce GTX 770 is 67% faster than the Radeon HD 6870 in general, because of its higher bandwidth. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 6870		134400 MB/sec
	Difference: 89984 (67%)

Texel Rate

The Geforce GTX 770 will be much (more or less 166%) better at texture filtering than the Radeon HD 6870. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 6870		50400 Mtexels/sec
	Difference: 83488 (166%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 770 is the winner, but only just. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 6870		28800 Mpixels/sec
	Difference: 4672 (16%)

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 (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.