GeForce 9800 GTX+ vs GeForce GTX 860M

Intro

Compare those specs to the GeForce GTX 860M, which comes with clock speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1152 SPUs as well as 96 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce 9800 GTX+		145 Watts
	Difference: 100 Watts (222%)

Memory Bandwidth

In theory, the GeForce 9800 GTX+ will be 10% faster than the GeForce GTX 860M in general, due to its higher bandwidth. (explain)

GeForce 9800 GTX+		70400 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 6400 (10%)

Texel Rate

The GeForce GTX 860M will be quite a bit (approximately 62%) faster with regards to anisotropic filtering than the GeForce 9800 GTX+. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce 9800 GTX+		47232 Mtexels/sec
	Difference: 29280 (62%)

Pixel Rate

The GeForce GTX 860M is a little bit (about 8%) faster with regards to FSAA than the GeForce 9800 GTX+, and also able to handle higher resolutions better. (explain)

GeForce GTX 860M		12752 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 944 (8%)

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 (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 card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total number of texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.