GeForce GT 430 1GB vs GeForce GTX 850M

Intro

Compare those specs 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 is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce GT 430 1GB		60 Watts
	Difference: 20 Watts (50%)

Memory Bandwidth

Theoretically, the GeForce GTX 850M should be just a bit faster than the GeForce GT 430 1GB in general. (explain)

GeForce GTX 850M		32000 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 3200 (11%)

Texel Rate

The GeForce GTX 850M should be a lot (approximately 213%) faster with regards to anisotropic filtering than the GeForce GT 430 1GB. (explain)

GeForce GTX 850M		35040 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 23840 (213%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 850M is superior to the GeForce GT 430 1GB, by a large margin. (explain)

GeForce GTX 850M		14016 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 11216 (401%)

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 data (counted in megabytes per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are 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 higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.