GeForce GTX 1070 vs Radeon HD 6770 1GB

Intro

Compare those specs to the Radeon HD 6770 1GB, which has a core clock speed of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It is comprised of 800 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
GeForce GTX 1070		150 Watts
	Difference: 42 Watts (39%)

Memory Bandwidth

In theory, the GeForce GTX 1070 will be 290% quicker than the Radeon HD 6770 1GB overall, because of its greater bandwidth. (explain)

GeForce GTX 1070		262144 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 194944 (290%)

Texel Rate

The GeForce GTX 1070 should be quite a bit (approximately 402%) better at anisotropic filtering than the Radeon HD 6770 1GB. (explain)

GeForce GTX 1070		180720 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 144720 (402%)

Pixel Rate

The GeForce GTX 1070 will be quite a bit (more or less 569%) more effective at AA than the Radeon HD 6770 1GB, and will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 1070		96384 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 81984 (569%)

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 maximum amount of data (in units of megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 reach the maximum fill rate.