GeForce 9800 GTX+ vs GeForce GTX 580

Intro

Compare those specs to the GeForce GTX 580, which features clock speeds of 772 MHz on the GPU, and 1002 MHz on the 1536 MB of GDDR5 RAM. It features 512 SPUs along with 64 TAUs and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX+		145 Watts
GeForce GTX 580		244 Watts
	Difference: 99 Watts (68%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 should in theory be a lot superior to the GeForce 9800 GTX+ overall. (explain)

GeForce GTX 580		192384 MB/sec
GeForce 9800 GTX+		70400 MB/sec
	Difference: 121984 (173%)

Texel Rate

The GeForce GTX 580 is a little bit (approximately 5%) better at texture filtering than the GeForce 9800 GTX+. (explain)

GeForce GTX 580		49408 Mtexels/sec
GeForce 9800 GTX+		47232 Mtexels/sec
	Difference: 2176 (5%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 580 is the winner, by far. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 25248 (214%)

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 maximum amount of data (counted in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better 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 texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.