GeForce 9800 GT 512MB vs GeForce GTX 750 Ti

Intro

Compare those specs to the GeForce GTX 750 Ti, which has GPU core speed of 1020 MHz, and 2048 MB of GDDR5 memory set to run at 1350 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
GeForce 9800 GT 512MB		105 Watts
	Difference: 45 Watts (75%)

Memory Bandwidth

Theoretically, the GeForce GTX 750 Ti should be a lot faster than the GeForce 9800 GT 512MB in general. (explain)

GeForce GTX 750 Ti		86400 MB/sec
GeForce 9800 GT 512MB		57600 MB/sec
	Difference: 28800 (50%)

Texel Rate

The GeForce GTX 750 Ti should be much (about 21%) faster with regards to texture filtering than the GeForce 9800 GT 512MB. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
GeForce 9800 GT 512MB		33600 Mtexels/sec
	Difference: 7200 (21%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 750 Ti is superior to the GeForce 9800 GT 512MB, by a large margin. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
GeForce 9800 GT 512MB		9600 Mpixels/sec
	Difference: 6720 (70%)

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 largest amount of information (in units of MB per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher 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 maximum amount of 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 Raster Operations Pipelines 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.