GeForce 8800 GT 256MB vs GeForce GTX 650 Ti 2GB

Intro

Compare that to the GeForce GTX 650 Ti 2GB, which features a core clock speed of 928 MHz and a GDDR5 memory frequency of 1350 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is comprised of 768 SPUs, 64 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 256MB		105 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 5 Watts (5%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 Ti 2GB should be a lot faster than the GeForce 8800 GT 256MB overall. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
GeForce 8800 GT 256MB		44800 MB/sec
	Difference: 41600 (93%)

Texel Rate

The GeForce GTX 650 Ti 2GB will be a lot (about 77%) faster with regards to texture filtering than the GeForce 8800 GT 256MB. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
GeForce 8800 GT 256MB		33600 Mtexels/sec
	Difference: 25792 (77%)

Pixel Rate

The GeForce GTX 650 Ti 2GB is much (about 55%) faster with regards to full screen anti-aliasing than the GeForce 8800 GT 256MB, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
GeForce 8800 GT 256MB		9600 Mpixels/sec
	Difference: 5248 (55%)

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 max amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.