Geforce GTX 770 vs Radeon HD 6770 1GB

Intro

Compare all of that to the Radeon HD 6770 1GB, which comes with clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 800 SPUs as well as 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 770		230 Watts
	Difference: 122 Watts (113%)

Memory Bandwidth

The Geforce GTX 770 should in theory perform much faster than the Radeon HD 6770 1GB in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 157184 (234%)

Texel Rate

The Geforce GTX 770 should be much (approximately 272%) faster with regards to texture filtering than the Radeon HD 6770 1GB. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 97888 (272%)

Pixel Rate

The Geforce GTX 770 is a lot (about 132%) faster with regards to AA than the Radeon HD 6770 1GB, and also will be capable of handling higher resolutions better. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 19072 (132%)

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 largest amount of information (measured in MB per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 are applied in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the 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 most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core 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 quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.