GeForce 9800 GTX vs GeForce GTX 965M

Intro

Compare those specs to the GeForce GTX 965M, which uses a 28 nm design. nVidia has clocked the core frequency at 944 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this particular card. It features 1024 SPUs along with 64 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
GeForce 9800 GTX		140 Watts
	Difference: 80 Watts (133%)

Memory Bandwidth

The GeForce 9800 GTX, in theory, should be a small bit faster than the GeForce GTX 965M overall. (explain)

GeForce 9800 GTX		70400 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 6400 (10%)

Texel Rate

The GeForce GTX 965M is much (about 40%) faster with regards to anisotropic filtering than the GeForce 9800 GTX. (explain)

GeForce GTX 965M		60416 Mtexels/sec
GeForce 9800 GTX		43200 Mtexels/sec
	Difference: 17216 (40%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 965M is the winner, and very much so. (explain)

GeForce GTX 965M		30208 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 19408 (180%)

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 max amount of data (counted in megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.