GeForce 8600 GT 256MB GDDR3 vs GeForce GTX 465

Intro

Compare those specifications to the GeForce GTX 465, which has core clock speeds of 607 MHz on the GPU, and 802 MHz on the 1024 MB of GDDR5 memory. It features 352 SPUs along with 44 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 256MB GDDR3		47 Watts
GeForce GTX 465		200 Watts
	Difference: 153 Watts (326%)

Memory Bandwidth

In theory, the GeForce GTX 465 should be 358% faster than the GeForce 8600 GT 256MB GDDR3 in general, due to its higher bandwidth. (explain)

GeForce GTX 465		102592 MB/sec
GeForce 8600 GT 256MB GDDR3		22400 MB/sec
	Difference: 80192 (358%)

Texel Rate

The GeForce GTX 465 is much (more or less 209%) more effective at anisotropic filtering than the GeForce 8600 GT 256MB GDDR3. (explain)

GeForce GTX 465		26708 Mtexels/sec
GeForce 8600 GT 256MB GDDR3		8640 Mtexels/sec
	Difference: 18068 (209%)

Pixel Rate

The GeForce GTX 465 is much (more or less 350%) better at AA than the GeForce 8600 GT 256MB GDDR3, and also will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce 8600 GT 256MB GDDR3		4320 Mpixels/sec
	Difference: 15104 (350%)

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 maximum amount of information (counted in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 maximum fill rate.