GeForce 8600 GT 512MB DDR2 vs GeForce GTX 650 Ti 2GB

Intro

Compare those specs to the GeForce GTX 650 Ti 2GB, which makes use of a 28 nm design. nVidia has set the core speed at 928 MHz. The GDDR5 RAM runs at a frequency of 1350 MHz on this specific card. It features 768 SPUs along with 64 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2		47 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 63 Watts (134%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 Ti 2GB should be a lot faster than the GeForce 8600 GT 512MB DDR2 overall. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
GeForce 8600 GT 512MB DDR2		12800 MB/sec
	Difference: 73600 (575%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be much (approximately 587%) faster with regards to AF than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
GeForce 8600 GT 512MB DDR2		8640 Mtexels/sec
	Difference: 50752 (587%)

Pixel Rate

The GeForce GTX 650 Ti 2GB will be a lot (approximately 244%) more effective at full screen anti-aliasing than the GeForce 8600 GT 512MB DDR2, and able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
GeForce 8600 GT 512MB DDR2		4320 Mpixels/sec
	Difference: 10528 (244%)

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 (in units of MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.