GeForce 8300 GS (OEM) vs GeForce GTX 850M

Intro

Compare that to the GeForce GTX 850M, which has a GPU core clock speed of 876 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 128-bit bus. It also features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce GTX 850M should theoretically be quite a bit faster than the GeForce 8300 GS (OEM) overall. (explain)

GeForce GTX 850M		32000 MB/sec
GeForce 8300 GS (OEM)		6400 MB/sec
	Difference: 25600 (400%)

Texel Rate

The GeForce GTX 850M will be quite a bit (about 1847%) faster with regards to anisotropic filtering than the GeForce 8300 GS (OEM). (explain)

GeForce GTX 850M		35040 Mtexels/sec
GeForce 8300 GS (OEM)		1800 Mtexels/sec
	Difference: 33240 (1847%)

Pixel Rate

The GeForce GTX 850M is a lot (about 1457%) faster with regards to AA than the GeForce 8300 GS (OEM), and also should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 850M		14016 Mpixels/sec
GeForce 8300 GS (OEM)		900 Mpixels/sec
	Difference: 13116 (1457%)

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 max amount of data (in units of MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's 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 amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.