GeForce 9800 GTX+ vs Geforce GTX 780

Intro

Compare all that to the Geforce GTX 780, which has core speeds of 863 MHz on the GPU, and 1502 MHz on the 3072 MB of GDDR5 RAM. It features 2304 SPUs as well as 192 Texture Address Units and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX+		145 Watts
Geforce GTX 780		250 Watts
	Difference: 105 Watts (72%)

Memory Bandwidth

In theory, the Geforce GTX 780 is 310% quicker than the GeForce 9800 GTX+ in general, due to its greater bandwidth. (explain)

Geforce GTX 780		288384 MB/sec
GeForce 9800 GTX+		70400 MB/sec
	Difference: 217984 (310%)

Texel Rate

The Geforce GTX 780 will be quite a bit (about 251%) better at texture filtering than the GeForce 9800 GTX+. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce 9800 GTX+		47232 Mtexels/sec
	Difference: 118464 (251%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 780 is superior to the GeForce 9800 GTX+, and very much so. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 29616 (251%)

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 information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.