GeForce 8800 GT 512MB vs Geforce GTX 770

Intro

Compare that to the Geforce GTX 770, which makes use of a 28 nm design. nVidia has clocked the core speed at 1046 MHz. The GDDR5 RAM is set to run at a frequency of 1753 MHz on this particular card. It features 1536 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
Geforce GTX 770		230 Watts
	Difference: 125 Watts (119%)

Memory Bandwidth

In theory, the Geforce GTX 770 will be 290% faster than the GeForce 8800 GT 512MB in general, due to its higher bandwidth. (explain)

Geforce GTX 770		224384 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 166784 (290%)

Texel Rate

The Geforce GTX 770 should be quite a bit (more or less 298%) better at texture filtering than the GeForce 8800 GT 512MB. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 100288 (298%)

Pixel Rate

The Geforce GTX 770 should be a lot (about 249%) faster with regards to FSAA than the GeForce 8800 GT 512MB, and also able to handle higher resolutions without losing too much performance. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 23872 (249%)

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 over the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.