GeForce 9800 GTX+ vs GeForce GTX 860M

Intro

Compare that to the GeForce GTX 860M, which uses a 28 nm design. nVidia has clocked the core frequency at 797 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this card. It features 1152 SPUs as well as 96 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

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

As far as performance goes, the GeForce 9800 GTX+ should in theory be just a bit superior to the GeForce GTX 860M overall. (explain)

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

Texel Rate

The GeForce GTX 860M should be a lot (more or less 62%) more effective at 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 should be just a bit (more or less 8%) better at FSAA than the GeForce 9800 GTX+, and also will be capable of handling higher resolutions without slowing down too much. (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 maximum amount of information (in units of megabytes per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.