GeForce 8500 GT vs GeForce GTX 980

Intro

Compare that to the GeForce GTX 980, which has clock speeds of 1126 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8500 GT		45 Watts
GeForce GTX 980		165 Watts
	Difference: 120 Watts (267%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980 should be much faster than the GeForce 8500 GT overall. (explain)

GeForce GTX 980		224000 MB/sec
GeForce 8500 GT		12800 MB/sec
	Difference: 211200 (1650%)

Texel Rate

The GeForce GTX 980 will be much (more or less 3904%) more effective at AF than the GeForce 8500 GT. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 140528 (3904%)

Pixel Rate

The GeForce GTX 980 should be a lot (approximately 3904%) better at FSAA than the GeForce 8500 GT, and capable of handling higher resolutions better. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 70264 (3904%)

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 past the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.