GeForce GTX 280 vs GeForce GTX 650 Ti

Intro

Compare those specs to the GeForce GTX 650 Ti, which has a clock speed of 928 MHz and a GDDR5 memory speed of 1350 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is comprised of 768 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

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

The GeForce GTX 280 should theoretically be quite a bit faster than the GeForce GTX 650 Ti overall. (explain)

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

Texel Rate

The GeForce GTX 650 Ti should be quite a bit (about 23%) better at anisotropic filtering 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 AA than the GeForce GTX 650 Ti, and also capable of handling higher screen resolutions better. (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: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.