GeForce 830M vs GeForce 9500 GT DDR2

Intro

Compare those specs to the GeForce 9500 GT DDR2, which makes use of a 65 nm design. nVidia has set the core frequency at 550 MHz. The DDR2 RAM is set to run at a frequency of 500 MHz on this model. It features 32 SPUs along with 16 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce 9500 GT DDR2		50 Watts
	Difference: 25 Watts (100%)

Memory Bandwidth

Performance-wise, the GeForce 9500 GT DDR2 should in theory be a small bit superior to the GeForce 830M overall. (explain)

GeForce 9500 GT DDR2		16000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 1600 (11%)

Texel Rate

The GeForce 830M should be quite a bit (more or less 87%) more effective at AF than the GeForce 9500 GT DDR2. (explain)

GeForce 830M		16464 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 7664 (87%)

Pixel Rate

The GeForce 830M should be a lot (more or less 87%) faster with regards to FSAA than the GeForce 9500 GT DDR2, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce 830M		8232 Mpixels/sec
GeForce 9500 GT DDR2		4400 Mpixels/sec
	Difference: 3832 (87%)

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 max amount of information (counted in MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out 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 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 could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.