GeForce 9500 GT DDR2 vs GeForce GTX 980

Intro

Compare that to the GeForce GTX 980, which features GPU clock speed of 1126 MHz, and 4096 MB of GDDR5 memory running at 1750 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT DDR2		50 Watts
GeForce GTX 980		165 Watts
	Difference: 115 Watts (230%)

Memory Bandwidth

The GeForce GTX 980, in theory, should perform a lot faster than the GeForce 9500 GT DDR2 in general. (explain)

GeForce GTX 980		224000 MB/sec
GeForce 9500 GT DDR2		16000 MB/sec
	Difference: 208000 (1300%)

Texel Rate

The GeForce GTX 980 should be much (more or less 1538%) better at anisotropic filtering than the GeForce 9500 GT DDR2. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 135328 (1538%)

Pixel Rate

The GeForce GTX 980 should be much (about 1538%) better at FSAA than the GeForce 9500 GT DDR2, and also able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce 9500 GT DDR2		4400 Mpixels/sec
	Difference: 67664 (1538%)

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: Bandwidth is the maximum amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, 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 number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.