GeForce 9800 GTX vs Radeon HD 5770

Intro

Compare that to the Radeon HD 5770, which has clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) 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 5770		108 Watts
GeForce 9800 GTX		140 Watts
	Difference: 32 Watts (30%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5770 should theoretically be just a bit superior to the GeForce 9800 GTX overall. (explain)

Radeon HD 5770		76800 MB/sec
GeForce 9800 GTX		70400 MB/sec
	Difference: 6400 (9%)

Texel Rate

The GeForce 9800 GTX should be much (more or less 27%) better at AF than the Radeon HD 5770. (explain)

GeForce 9800 GTX		43200 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 9200 (27%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 5770 is superior to the GeForce 9800 GTX, by far. (explain)

Radeon HD 5770		13600 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 2800 (26%)

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 max amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one 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 the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of 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 card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.