GeForce 8300 GS (OEM) vs GeForce GT 420

Intro

Compare those specifications to the GeForce GT 420, which uses a 40 nm design. nVidia has clocked the core frequency at 700 MHz. The GDDR3 memory runs at a frequency of 900 MHz on this specific model. It features 48 SPUs as well as 8 TAUs and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8300 GS (OEM)		40 Watts
GeForce GT 420		50 Watts
	Difference: 10 Watts (25%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 420 will be 350% faster than the GeForce 8300 GS (OEM) overall, because of its higher bandwidth. (explain)

GeForce GT 420		28800 MB/sec
GeForce 8300 GS (OEM)		6400 MB/sec
	Difference: 22400 (350%)

Texel Rate

The GeForce GT 420 should be a lot (approximately 211%) more effective at texture filtering than the GeForce 8300 GS (OEM). (explain)

GeForce GT 420		5600 Mtexels/sec
GeForce 8300 GS (OEM)		1800 Mtexels/sec
	Difference: 3800 (211%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GT 420 is the winner, by far. (explain)

GeForce GT 420		2800 Mpixels/sec
GeForce 8300 GS (OEM)		900 Mpixels/sec
	Difference: 1900 (211%)

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 largest amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.