GeForce 9800 GTX+ vs GeForce GTX 650 Ti

Intro

Compare those specifications to the GeForce GTX 650 Ti, which comes with 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 features 768 SPUs, 64 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti		110 Watts
GeForce 9800 GTX+		145 Watts
	Difference: 35 Watts (32%)

Memory Bandwidth

The GeForce GTX 650 Ti should theoretically perform a lot faster than the GeForce 9800 GTX+ in general. (explain)

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

Texel Rate

The GeForce GTX 650 Ti should be much (more or less 26%) more effective at anisotropic filtering than the GeForce 9800 GTX+. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
GeForce 9800 GTX+		47232 Mtexels/sec
	Difference: 12160 (26%)

Pixel Rate

The GeForce GTX 650 Ti will be quite a bit (about 26%) better at full screen anti-aliasing than the GeForce 9800 GTX+, and also will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 3040 (26%)

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 information (counted in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's 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 quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.