GeForce 9800 GT 1GB vs Geforce GTX 690

Intro

Compare those specifications to the Geforce GTX 690, which makes use of a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 memory is set to run at a frequency of 1502 MHz on this specific model. It features 1536 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB		105 Watts
Geforce GTX 690		300 Watts
	Difference: 195 Watts (186%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 690 should perform a lot faster than the GeForce 9800 GT 1GB overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 326912 (568%)

Texel Rate

The Geforce GTX 690 is much (more or less 597%) more effective at texture filtering than the GeForce 9800 GT 1GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce 9800 GT 1GB		33600 Mtexels/sec
	Difference: 200640 (597%)

Pixel Rate

The Geforce GTX 690 is much (approximately 510%) more effective at anti-aliasing than the GeForce 9800 GT 1GB, and also able to handle higher resolutions better. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 48960 (510%)

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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock 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 - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.