GeForce 8800 GT 512MB vs GeForce GTX 465

Intro

Compare all that to the GeForce GTX 465, which comes with GPU clock speed of 607 MHz, and 1024 MB of GDDR5 memory set to run at 802 MHz through a 256-bit bus. It also is made up of 352 Stream Processors, 44 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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

In theory, the GeForce GTX 465 should perform 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 will be a lot (more or less 26%) better at AF than the GeForce GTX 465. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 465 is superior to the GeForce 8800 GT 512MB, and very much so. (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 over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.