GeForce 9800 GTX+ vs GeForce GTX 580 3GB

Intro

Compare that to the GeForce GTX 580 3GB, which has GPU clock speed of 772 MHz, and 3072 MB of GDDR5 memory running at 1002 MHz through a 384-bit bus. It also is comprised of 512 Stream Processors, 64 TAUs, and 48 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX+		145 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 99 Watts (68%)

Memory Bandwidth

In theory, the GeForce GTX 580 3GB should be a lot faster than the GeForce 9800 GTX+ overall. (explain)

GeForce GTX 580 3GB		192384 MB/sec
GeForce 9800 GTX+		70400 MB/sec
	Difference: 121984 (173%)

Texel Rate

The GeForce GTX 580 3GB should be just a bit (about 5%) faster with regards to anisotropic filtering than the GeForce 9800 GTX+. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
GeForce 9800 GTX+		47232 Mtexels/sec
	Difference: 2176 (5%)

Pixel Rate

The GeForce GTX 580 3GB should be a lot (more or less 214%) faster with regards to AA than the GeForce 9800 GTX+, and able to handle higher resolutions more effectively. (explain)

GeForce GTX 580 3GB		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: Bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the 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 figure 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 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 most pixels the video 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 amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.