GeForce 830M vs GeForce 9500 GT DDR2

Intro

Compare those specs to the GeForce 9500 GT DDR2, which comes with a GPU core clock speed of 550 MHz, and 256 MB of DDR2 memory set to run at 500 MHz through a 128-bit bus. It also is comprised of 32 Stream Processors, 16 Texture Address Units, and 8 ROPs.

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

Theoretically speaking, the GeForce 9500 GT DDR2 should be 11% faster than the GeForce 830M in general, due to its higher data rate. (explain)

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

Texel Rate

The GeForce 830M should be a lot (about 87%) faster with regards to texture filtering 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 is quite a bit (about 87%) better at anti-aliasing than the GeForce 9500 GT DDR2, and also should be 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 maximum amount of data (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR 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 is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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