GeForce 830M vs GeForce 9800 GT 512MB

Intro

Compare those specs to the GeForce 9800 GT 512MB, which makes use of a 65/55 nm design. nVidia has clocked the core frequency at 600 MHz. The GDDR3 RAM runs at a frequency of 900 MHz on this particular model. It features 112 SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce 9800 GT 512MB		105 Watts
	Difference: 80 Watts (320%)

Memory Bandwidth

In theory, the GeForce 9800 GT 512MB should perform a lot faster than the GeForce 830M overall. (explain)

GeForce 9800 GT 512MB		57600 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 43200 (300%)

Texel Rate

The GeForce 9800 GT 512MB is quite a bit (about 104%) faster with regards to texture filtering than the GeForce 830M. (explain)

GeForce 9800 GT 512MB		33600 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 17136 (104%)

Pixel Rate

The GeForce 9800 GT 512MB will be a small bit (approximately 17%) faster with regards to AA than the GeForce 830M, and should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce 9800 GT 512MB		9600 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 1368 (17%)

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 (in units of megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant 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.