GeForce GTX 590 vs Radeon HD 6770 1GB

Intro

Compare all of that to the Radeon HD 6770 1GB, which has GPU core speed of 900 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 128-bit bus. It also is made up of 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 1GB		108 Watts
GeForce GTX 590		365 Watts
	Difference: 257 Watts (238%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 590 should theoretically be much better than the Radeon HD 6770 1GB overall. (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%) faster with regards to anisotropic filtering 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 quite a bit (approximately 305%) more effective at full screen anti-aliasing than the Radeon HD 6770 1GB, and should be able to handle higher screen resolutions better. (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 information (counted in MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that can be processed per second. This figure is worked out 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 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 graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.