GeForce GTX 260 Core 216 vs Geforce GTX 780

Intro

Compare all of that to the Geforce GTX 780, which uses a 28 nm design. nVidia has set the core speed at 863 MHz. The GDDR5 memory runs at a speed of 1502 MHz on this particular model. It features 2304 SPUs as well as 192 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260 Core 216		202 Watts
Geforce GTX 780		250 Watts
	Difference: 48 Watts (24%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 is 158% faster than the GeForce GTX 260 Core 216 overall, because of its higher data rate. (explain)

Geforce GTX 780		288384 MB/sec
GeForce GTX 260 Core 216		111888 MB/sec
	Difference: 176496 (158%)

Texel Rate

The Geforce GTX 780 will be much (more or less 300%) faster with regards to texture filtering than the GeForce GTX 260 Core 216. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GTX 260 Core 216		41472 Mtexels/sec
	Difference: 124224 (300%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 780 is superior to the GeForce GTX 260 Core 216, by far. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce GTX 260 Core 216		16128 Mpixels/sec
	Difference: 25296 (157%)

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 max amount of data (counted in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics 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 maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.