GeForce 8500 GT vs GeForce GTX 465

Intro

Compare that to the GeForce GTX 465, which features a core clock speed of 607 MHz and a GDDR5 memory speed of 802 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 352 SPUs, 44 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8500 GT		45 Watts
GeForce GTX 465		200 Watts
	Difference: 155 Watts (344%)

Memory Bandwidth

Performance-wise, the GeForce GTX 465 should in theory be much better than the GeForce 8500 GT overall. (explain)

GeForce GTX 465		102592 MB/sec
GeForce 8500 GT		12800 MB/sec
	Difference: 89792 (702%)

Texel Rate

The GeForce GTX 465 is quite a bit (approximately 642%) faster with regards to AF than the GeForce 8500 GT. (explain)

GeForce GTX 465		26708 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 23108 (642%)

Pixel Rate

The GeForce GTX 465 will be much (more or less 979%) more effective at full screen anti-aliasing than the GeForce 8500 GT, and will be capable of handling higher screen resolutions better. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 17624 (979%)

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 maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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 get to the maximum fill rate.