GeForce 9800 GT 1GB vs GeForce GTX 965M

Intro

Compare those specifications to the GeForce GTX 965M, which has a core clock frequency of 944 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is made up of 1024 SPUs, 64 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
GeForce 9800 GT 1GB		105 Watts
	Difference: 45 Watts (75%)

Memory Bandwidth

The GeForce GTX 965M should theoretically be just a bit faster than the GeForce 9800 GT 1GB overall. (explain)

GeForce GTX 965M		64000 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 6400 (11%)

Texel Rate

The GeForce GTX 965M will be quite a bit (about 80%) faster with regards to anisotropic filtering than the GeForce 9800 GT 1GB. (explain)

GeForce GTX 965M		60416 Mtexels/sec
GeForce 9800 GT 1GB		33600 Mtexels/sec
	Difference: 26816 (80%)

Pixel Rate

The GeForce GTX 965M will be quite a bit (more or less 215%) faster with regards to anti-aliasing than the GeForce 9800 GT 1GB, and also capable of handling higher screen resolutions better. (explain)

GeForce GTX 965M		30208 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 20608 (215%)

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 maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better 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 amount of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.