GeForce 9800 GT 1GB vs GeForce GTX 650 Ti

Intro

Compare that to the GeForce GTX 650 Ti, which features GPU clock speed of 928 MHz, and 1024 MB of GDDR5 memory set to run at 1350 MHz through a 128-bit bus. It also is comprised of 768 SPUs, 64 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB		105 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 5 Watts (5%)

Memory Bandwidth

Theoretically, the GeForce GTX 650 Ti should be a lot faster than the GeForce 9800 GT 1GB in general. (explain)

GeForce GTX 650 Ti		86400 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 28800 (50%)

Texel Rate

The GeForce GTX 650 Ti should be quite a bit (about 77%) more effective at anisotropic filtering than the GeForce 9800 GT 1GB. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
GeForce 9800 GT 1GB		33600 Mtexels/sec
	Difference: 25792 (77%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 650 Ti is the winner, and very much so. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 5248 (55%)

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 MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the 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 the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.