GeForce 9500 GT DDR2 vs GeForce GTX 880M

Intro

Compare all that to the GeForce GTX 880M, which comes with clock speeds of 954 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 RAM. 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 9500 GT DDR2		50 Watts
GeForce GTX 880M		130 Watts
	Difference: 80 Watts (160%)

Memory Bandwidth

In theory, the GeForce GTX 880M is 700% faster than the GeForce 9500 GT DDR2 overall, due to its greater bandwidth. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce 9500 GT DDR2		16000 MB/sec
	Difference: 112000 (700%)

Texel Rate

The GeForce GTX 880M should be a lot (approximately 1288%) better at anisotropic filtering than the GeForce 9500 GT DDR2. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 113312 (1288%)

Pixel Rate

The GeForce GTX 880M should be much (approximately 594%) faster with regards to anti-aliasing than the GeForce 9500 GT DDR2, and will be capable of handling higher resolutions better. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce 9500 GT DDR2		4400 Mpixels/sec
	Difference: 26128 (594%)

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 maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units of the card 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.