GeForce 9800 GT 1GB vs GeForce GTX 860M

Intro

Compare those specs to the GeForce GTX 860M, which features GPU clock speed of 797 MHz, and 4096 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is made up of 1152 Stream Processors, 96 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce 9800 GT 1GB		105 Watts
	Difference: 60 Watts (133%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 860M is 11% faster than the GeForce 9800 GT 1GB in general, due to its greater bandwidth. (explain)

GeForce GTX 860M		64000 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 6400 (11%)

Texel Rate

The GeForce GTX 860M will be much (about 128%) more effective at AF than the GeForce 9800 GT 1GB. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce 9800 GT 1GB		33600 Mtexels/sec
	Difference: 42912 (128%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 860M is superior to the GeForce 9800 GT 1GB, and very much so. (explain)

GeForce GTX 860M		12752 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 3152 (33%)

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 data (in units of megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the 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 applied per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, 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 maximum number of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.