GeForce 8500 GT vs GeForce GTX 460 (OEM)

Intro

Compare those specifications to the GeForce GTX 460 (OEM), which has a core clock speed of 650 MHz and a GDDR5 memory frequency of 850 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 336 SPUs, 56 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8500 GT		45 Watts
GeForce GTX 460 (OEM)		150 Watts
	Difference: 105 Watts (233%)

Memory Bandwidth

The GeForce GTX 460 (OEM) should in theory be a lot faster than the GeForce 8500 GT in general. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
GeForce 8500 GT		12800 MB/sec
	Difference: 96000 (750%)

Texel Rate

The GeForce GTX 460 (OEM) is a lot (more or less 911%) better at AF than the GeForce 8500 GT. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 32800 (911%)

Pixel Rate

The GeForce GTX 460 (OEM) should be a lot (more or less 1056%) faster with regards to FSAA than the GeForce 8500 GT, and will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 19000 (1056%)

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: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 can be applied per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.