GeForce 8800 GT 512MB vs GeForce GTX 650

Intro

Compare all that to the GeForce GTX 650, which uses a 28 nm design. nVidia has clocked the core speed at 1058 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this model. It features 384 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce 8800 GT 512MB		105 Watts
	Difference: 41 Watts (64%)

Memory Bandwidth

The GeForce GTX 650 should in theory perform quite a bit faster than the GeForce 8800 GT 512MB overall. (explain)

GeForce GTX 650		80000 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 22400 (39%)

Texel Rate

The GeForce GTX 650 will be a small bit (more or less 1%) better at texture filtering than the GeForce 8800 GT 512MB. (explain)

GeForce GTX 650		33856 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 256 (1%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 650 is superior to the GeForce 8800 GT 512MB, by far. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 7328 (76%)

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 megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock 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 lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.