GeForce 830M vs GeForce 8500 GT

Intro

Compare that to the GeForce 8500 GT, which comes with core clock speeds of 450 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 memory. It features 16 SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce 8500 GT		45 Watts
	Difference: 20 Watts (80%)

Memory Bandwidth

Performance-wise, the GeForce 830M should theoretically be a little bit superior to the GeForce 8500 GT in general. (explain)

GeForce 830M		14400 MB/sec
GeForce 8500 GT		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The GeForce 830M should be a lot (about 357%) better at texture filtering than the GeForce 8500 GT. (explain)

GeForce 830M		16464 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 12864 (357%)

Pixel Rate

The GeForce 830M should be much (approximately 357%) faster with regards to anti-aliasing than the GeForce 8500 GT, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce 830M		8232 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 6432 (357%)

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 largest amount of information (counted in MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs 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 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.