Geforce GTX 770 vs Radeon HD 6770 1GB

Intro

Compare those specifications to the Radeon HD 6770 1GB, which makes use of a 40 nm design. AMD has set the core frequency at 900 MHz. The GDDR5 RAM is set to run at a speed of 1050 MHz on this card. It features 800 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

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, in theory, should perform quite a bit faster than the Radeon HD 6770 1GB overall. (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 a lot (more or less 272%) faster with regards to AF 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

If using a high screen resolution is important to you, then the Geforce GTX 770 is superior to the Radeon HD 6770 1GB, and very much so. (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 data (in units of megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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