GeForce GTX 280 vs GeForce GTX 650 Ti

Intro

Compare those specs to the GeForce GTX 650 Ti, which uses a 28 nm design. nVidia has clocked the core frequency at 928 MHz. The GDDR5 memory is set to run at a frequency of 1350 MHz on this particular card. It features 768 SPUs as well as 64 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti		110 Watts
GeForce GTX 280		236 Watts
	Difference: 126 Watts (115%)

Memory Bandwidth

In theory, the GeForce GTX 280 is 64% faster than the GeForce GTX 650 Ti in general, due to its greater bandwidth. (explain)

GeForce GTX 280		141696 MB/sec
GeForce GTX 650 Ti		86400 MB/sec
	Difference: 55296 (64%)

Texel Rate

The GeForce GTX 650 Ti will be a lot (about 23%) faster with regards to AF than the GeForce GTX 280. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
GeForce GTX 280		48160 Mtexels/sec
	Difference: 11232 (23%)

Pixel Rate

The GeForce GTX 280 is much (approximately 30%) more effective at anti-aliasing than the GeForce GTX 650 Ti, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 280		19264 Mpixels/sec
GeForce GTX 650 Ti		14848 Mpixels/sec
	Difference: 4416 (30%)

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 maximum amount of information (counted in MB per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.