GeForce 9800 GTX vs GeForce GTX 650 Ti 2GB

Intro

Compare all that to the GeForce GTX 650 Ti 2GB, which uses a 28 nm design. nVidia has clocked the core frequency at 928 MHz. The GDDR5 memory is set to run at a speed of 1350 MHz on this card. It features 768 SPUs as well as 64 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
GeForce 9800 GTX		140 Watts
	Difference: 30 Watts (27%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti 2GB should be much faster than the GeForce 9800 GTX overall. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
GeForce 9800 GTX		70400 MB/sec
	Difference: 16000 (23%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be quite a bit (approximately 37%) more effective at AF than the GeForce 9800 GTX. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
GeForce 9800 GTX		43200 Mtexels/sec
	Difference: 16192 (37%)

Pixel Rate

The GeForce GTX 650 Ti 2GB will be a lot (approximately 37%) faster with regards to AA than the GeForce 9800 GTX, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 4048 (37%)

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 max amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses 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 texture map elements (texels) that are applied in one second. This number is calculated 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.