GeForce GTX 275 vs GeForce GTX 580 3GB

Intro

Compare those specifications to the GeForce GTX 580 3GB, which makes use of a 40 nm design. nVidia has clocked the core frequency at 772 MHz. The GDDR5 RAM is set to run at a speed of 1002 MHz on this particular card. It features 512 SPUs along with 64 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 275		219 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 25 Watts (11%)

Memory Bandwidth

Theoretically, the GeForce GTX 580 3GB should be a lot faster than the GeForce GTX 275 overall. (explain)

GeForce GTX 580 3GB		192384 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 65376 (51%)

Texel Rate

The GeForce GTX 275 should be just a bit (about 2%) faster with regards to texture filtering than the GeForce GTX 580 3GB. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 1232 (2%)

Pixel Rate

The GeForce GTX 580 3GB is quite a bit (approximately 109%) more effective at full screen anti-aliasing than the GeForce GTX 275, and capable of handling higher screen resolutions better. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 19332 (109%)

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 largest amount of data (counted in megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka 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 of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.