GeForce 9500 GT 512MB GDDR3 vs Geforce GTX 690

Intro

Compare all that to the Geforce GTX 690, which features GPU core speed of 915 MHz, and 2048 MB of GDDR5 memory running at 1502 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 512MB GDDR3		50 Watts
Geforce GTX 690		300 Watts
	Difference: 250 Watts (500%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 690 should perform quite a bit faster than the GeForce 9500 GT 512MB GDDR3 overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce 9500 GT 512MB GDDR3		25600 MB/sec
	Difference: 358912 (1402%)

Texel Rate

The Geforce GTX 690 should be much (more or less 2562%) more effective at anisotropic filtering than the GeForce 9500 GT 512MB GDDR3. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce 9500 GT 512MB GDDR3		8800 Mtexels/sec
	Difference: 225440 (2562%)

Pixel Rate

The Geforce GTX 690 will be quite a bit (more or less 1231%) better at AA than the GeForce 9500 GT 512MB GDDR3, and will be capable of handling higher resolutions without losing too much performance. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce 9500 GT 512MB GDDR3		4400 Mpixels/sec
	Difference: 54160 (1231%)

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 largest amount of information (counted in MB per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.