GeForce GTX 970 vs Radeon HD 6770 1GB

Intro

Compare that to the Radeon HD 6770 1GB, which features clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
GeForce GTX 970		145 Watts
	Difference: 37 Watts (34%)

Memory Bandwidth

The GeForce GTX 970 should in theory perform a lot faster than the Radeon HD 6770 1GB in general. (explain)

GeForce GTX 970		224000 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 156800 (233%)

Texel Rate

The GeForce GTX 970 will be much (about 203%) better at anisotropic filtering than the Radeon HD 6770 1GB. (explain)

GeForce GTX 970		109200 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 73200 (203%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 970 is a better choice, by a large margin. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 52800 (367%)

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 information (counted in megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics 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 number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.