GeForce 9800 GT 1GB vs GeForce GTX 860M

Intro

Compare those specifications to the GeForce GTX 860M, which comes with a core clock frequency of 797 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It features 1152 SPUs, 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 GT 1GB		105 Watts
	Difference: 60 Watts (133%)

Memory Bandwidth

Theoretically, the GeForce GTX 860M should perform a little bit faster than the GeForce 9800 GT 1GB in general. (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 quite a bit (more or less 128%) faster with regards to anisotropic filtering 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

The GeForce GTX 860M will be much (approximately 33%) more effective at full screen anti-aliasing than the GeForce 9800 GT 1GB, and also capable of handling higher screen resolutions while still performing well. (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: Bandwidth is the largest amount of information (measured in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units of the card by the core clock 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 one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.