GeForce 9500 GT 1GB GDDR3 vs GeForce GTX 850M

Intro

Compare those specifications to the GeForce GTX 850M, which has GPU clock speed of 876 MHz, and 2048 MB of DDR3 memory running at 1000 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce 9500 GT 1GB GDDR3		50 Watts
	Difference: 10 Watts (25%)

Memory Bandwidth

In theory, the GeForce GTX 850M should perform a lot faster than the GeForce 9500 GT 1GB GDDR3 in general. (explain)

GeForce GTX 850M		32000 MB/sec
GeForce 9500 GT 1GB GDDR3		25600 MB/sec
	Difference: 6400 (25%)

Texel Rate

The GeForce GTX 850M will be quite a bit (more or less 298%) more effective at texture filtering than the GeForce 9500 GT 1GB GDDR3. (explain)

GeForce GTX 850M		35040 Mtexels/sec
GeForce 9500 GT 1GB GDDR3		8800 Mtexels/sec
	Difference: 26240 (298%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 850M is superior to the GeForce 9500 GT 1GB GDDR3, by a large margin. (explain)

GeForce GTX 850M		14016 Mpixels/sec
GeForce 9500 GT 1GB GDDR3		4400 Mpixels/sec
	Difference: 9616 (219%)

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 (counted in MB per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the 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 the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core 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 rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.