GeForce 9500 GT DDR2 vs GeForce GTX 660

Intro

Compare those specifications to the GeForce GTX 660, which comes with GPU core speed of 980 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 192-bit bus. It also is made up of 960 Stream Processors, 80 Texture Address Units, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT DDR2		50 Watts
GeForce GTX 660		140 Watts
	Difference: 90 Watts (180%)

Memory Bandwidth

Performance-wise, the GeForce GTX 660 should theoretically be a lot better than the GeForce 9500 GT DDR2 in general. (explain)

GeForce GTX 660		144192 MB/sec
GeForce 9500 GT DDR2		16000 MB/sec
	Difference: 128192 (801%)

Texel Rate

The GeForce GTX 660 should be a lot (more or less 791%) faster with regards to anisotropic filtering than the GeForce 9500 GT DDR2. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 69600 (791%)

Pixel Rate

The GeForce GTX 660 should be a lot (approximately 435%) faster with regards to FSAA than the GeForce 9500 GT DDR2, and also will be able to handle higher resolutions more effectively. (explain)

GeForce GTX 660		23520 Mpixels/sec
GeForce 9500 GT DDR2		4400 Mpixels/sec
	Difference: 19120 (435%)

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 data (measured in MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.