GeForce 8800 GT 512MB vs GeForce GTX 465

Intro

Compare that to the GeForce GTX 465, which features a clock frequency of 607 MHz and a GDDR5 memory frequency of 802 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 352 SPUs, 44 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
GeForce GTX 465		200 Watts
	Difference: 95 Watts (90%)

Memory Bandwidth

The GeForce GTX 465, in theory, should be a lot faster than the GeForce 8800 GT 512MB overall. (explain)

GeForce GTX 465		102592 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 44992 (78%)

Texel Rate

The GeForce 8800 GT 512MB should be much (approximately 26%) better at anisotropic filtering than the GeForce GTX 465. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 6892 (26%)

Pixel Rate

The GeForce GTX 465 should be much (more or less 102%) faster with regards to full screen anti-aliasing than the GeForce 8800 GT 512MB, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 9824 (102%)

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 data (measured in MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, 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 number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.