GeForce 9800 GTX vs GeForce GTX 965M

Intro

Compare that to the GeForce GTX 965M, which uses a 28 nm design. nVidia has clocked the core frequency at 944 MHz. The GDDR5 RAM is set to run 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

In theory, the GeForce 9800 GTX should perform just a 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 (more or less 40%) better at AF than the GeForce 9800 GTX. (explain)

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

Pixel Rate

The GeForce GTX 965M will be quite a bit (about 180%) faster with regards to AA than the GeForce 9800 GTX, and capable of handling higher resolutions better. (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: Bandwidth is the maximum amount of data (in units of MB per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, 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 could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.