GeForce 9800 GTX+ vs GeForce GTX 860M

Intro

Compare that to the GeForce GTX 860M, which features core clock speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 RAM. It features 1152 SPUs as well as 96 TAUs and 16 Rasterization Operator Units.

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

Performance-wise, the GeForce 9800 GTX+ should in theory be a small bit better than the GeForce GTX 860M in general. (explain)

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

Texel Rate

The GeForce GTX 860M will be a lot (more or less 62%) faster with regards to AF 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 (more or less 8%) better at full screen anti-aliasing 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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.