GeForce GTX 285 1GB vs Radeon HD 6770

Intro

Compare all that to the Radeon HD 6770, which has a GPU core clock speed of 900 MHz, and 512 MB of GDDR5 memory running at 1050 MHz through a 128-bit bus. It also features 800 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 96 Watts (89%)

Memory Bandwidth

The GeForce GTX 285 1GB, in theory, should be much faster than the Radeon HD 6770 overall. (explain)

GeForce GTX 285 1GB		158976 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 91776 (137%)

Texel Rate

The GeForce GTX 285 1GB will be quite a bit (more or less 44%) better at AF than the Radeon HD 6770. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 15840 (44%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 285 1GB is superior to the Radeon HD 6770, and very much so. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 6336 (44%)

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 MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.