GeForce 9800 GTX+ vs GeForce GTX 460 1GB

Intro

Compare those specs to the GeForce GTX 460 1GB, which has a GPU core clock speed of 675 MHz, and 1024 MB of GDDR5 memory running at 900 MHz through a 256-bit bus. It also is comprised of 336 SPUs, 56 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX+		145 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 15 Watts (10%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 1GB should be 64% faster than the GeForce 9800 GTX+ overall, because of its greater data rate. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce 9800 GTX+		70400 MB/sec
	Difference: 44800 (64%)

Texel Rate

The GeForce 9800 GTX+ will be a lot (more or less 25%) more effective at anisotropic filtering than the GeForce GTX 460 1GB. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
GeForce GTX 460 1GB		37800 Mtexels/sec
	Difference: 9432 (25%)

Pixel Rate

The GeForce GTX 460 1GB is quite a bit (more or less 83%) more effective at anti-aliasing than the GeForce 9800 GTX+, and able to handle higher screen resolutions better. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 9792 (83%)

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 transported across the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.