GeForce 9800 GTX+ vs GeForce GTX 570

Intro

Compare that to the GeForce GTX 570, which comes with GPU clock speed of 732 MHz, and 1280 MB of GDDR5 RAM running at 950 MHz through a 320-bit bus. It also features 480 Stream Processors, 60 Texture Address Units, and 40 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX+		145 Watts
GeForce GTX 570		219 Watts
	Difference: 74 Watts (51%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 570 should perform much faster than the GeForce 9800 GTX+ overall. (explain)

GeForce GTX 570		152000 MB/sec
GeForce 9800 GTX+		70400 MB/sec
	Difference: 81600 (116%)

Texel Rate

The GeForce 9800 GTX+ will be a bit (approximately 8%) more effective at texture filtering than the GeForce GTX 570. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
GeForce GTX 570		43920 Mtexels/sec
	Difference: 3312 (8%)

Pixel Rate

The GeForce GTX 570 is a lot (more or less 148%) faster with regards to AA than the GeForce 9800 GTX+, and will be able to handle higher resolutions more effectively. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 17472 (148%)

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 largest amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at handling 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 could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. 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 fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.