GeForce GTX 280 vs GeForce GTX 560 Ti 448

Intro

Compare all that to the GeForce GTX 560 Ti 448, which comes with a clock frequency of 732 MHz and a GDDR5 memory speed of 900 MHz. It also makes use of a 320-bit bus, and uses a 40 nm design. It is made up of 448 SPUs, 56 Texture Address Units, and 40 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 448		210 Watts
GeForce GTX 280		236 Watts
	Difference: 26 Watts (12%)

Memory Bandwidth

In theory, the GeForce GTX 560 Ti 448 is 2% faster than the GeForce GTX 280 in general, due to its higher bandwidth. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
GeForce GTX 280		141696 MB/sec
	Difference: 2304 (2%)

Texel Rate

The GeForce GTX 280 should be a bit (more or less 17%) faster with regards to anisotropic filtering than the GeForce GTX 560 Ti 448. (explain)

GeForce GTX 280		48160 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 7168 (17%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 560 Ti 448 is a better choice, by far. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
GeForce GTX 280		19264 Mpixels/sec
	Difference: 10016 (52%)

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 data (measured in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses 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 can be applied in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can 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 - 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 memory bandwidth is, the lower the ability to get to the max fill rate.