GeForce 830M vs GeForce GTX 650 Ti

Intro

Compare all of that to the GeForce GTX 650 Ti, which comes with clock speeds of 928 MHz on the GPU, and 1350 MHz on the 1024 MB of GDDR5 memory. It features 768 SPUs along with 64 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 85 Watts (340%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 Ti will be 500% faster than the GeForce 830M in general, because of its greater data rate. (explain)

GeForce GTX 650 Ti		86400 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 72000 (500%)

Texel Rate

The GeForce GTX 650 Ti should be a lot (approximately 261%) better at anisotropic filtering than the GeForce 830M. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 42928 (261%)

Pixel Rate

The GeForce GTX 650 Ti is quite a bit (approximately 80%) faster with regards to full screen anti-aliasing than the GeForce 830M, and also capable of handling higher resolutions more effectively. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 6616 (80%)

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 (in units of megabytes per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, 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 the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.