GeForce GTX 590 vs Radeon HD 6770 1GB

Intro

Compare all that to the Radeon HD 6770 1GB, which has core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs along with 40 TAUs 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 590		365 Watts
	Difference: 257 Watts (238%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 590 should perform a lot faster than the Radeon HD 6770 1GB in general. (explain)

GeForce GTX 590		328320 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 261120 (389%)

Texel Rate

The GeForce GTX 590 will be a lot (approximately 116%) better at AF than the Radeon HD 6770 1GB. (explain)

GeForce GTX 590		77696 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 41696 (116%)

Pixel Rate

The GeForce GTX 590 should be much (more or less 305%) more effective at FSAA than the Radeon HD 6770 1GB, and capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 590		58272 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 43872 (305%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs 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 output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.