GeForce GTX 275 vs GeForce GTX 280

Intro

Compare all of that to the GeForce GTX 280, which uses a 65 nm design. nVidia has clocked the core frequency at 602 MHz. The GDDR3 memory works at a speed of 1107 MHz on this particular card. It features 240 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 275		219 Watts
GeForce GTX 280		236 Watts
	Difference: 17 Watts (8%)

Memory Bandwidth

The GeForce GTX 280 should theoretically be a small bit faster than the GeForce GTX 275 overall. (explain)

GeForce GTX 280		141696 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 14688 (12%)

Texel Rate

The GeForce GTX 275 will be just a bit (about 5%) faster with regards to anisotropic filtering than the GeForce GTX 280. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 280		48160 Mtexels/sec
	Difference: 2480 (5%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 280 is a better choice, though only just barely. (explain)

GeForce GTX 280		19264 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 1540 (9%)

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 largest amount of information (in units of megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, 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 that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.