GeForce 9800 GTX+ vs Geforce GTX 780

Intro

Compare those specs to the Geforce GTX 780, which uses a 28 nm design. nVidia has clocked the core frequency at 863 MHz. The GDDR5 RAM works at a speed of 1502 MHz on this card. It features 2304 SPUs as well as 192 TAUs 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

As far as performance goes, the Geforce GTX 780 should theoretically be quite a bit better than the GeForce 9800 GTX+ in general. (explain)

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

Texel Rate

The Geforce GTX 780 is much (approximately 251%) more effective 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

The Geforce GTX 780 should be quite a bit (approximately 251%) better at FSAA than the GeForce 9800 GTX+, and also capable of handling higher resolutions without slowing down too much. (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: Bandwidth is the max amount of information (measured in megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's 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 per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.