GeForce 9800 GX2 vs GeForce GTX 650 Ti 2GB

Intro

Compare those specifications to the GeForce GTX 650 Ti 2GB, which makes use of a 28 nm design. nVidia has set the core frequency at 928 MHz. The GDDR5 RAM is set to run at a frequency of 1350 MHz on this specific model. It features 768 SPUs along with 64 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
GeForce 9800 GX2		197 Watts
	Difference: 87 Watts (79%)

Memory Bandwidth

Performance-wise, the GeForce 9800 GX2 should theoretically be a lot superior to the GeForce GTX 650 Ti 2GB overall. (explain)

GeForce 9800 GX2		128000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 41600 (48%)

Texel Rate

The GeForce 9800 GX2 should be much (about 29%) more effective at anisotropic filtering than the GeForce GTX 650 Ti 2GB. (explain)

GeForce 9800 GX2		76800 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 17408 (29%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 9800 GX2 is the winner, by far. (explain)

GeForce 9800 GX2		19200 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 4352 (29%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 are processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.