GeForce GTX 465 vs GeForce GTX 580

Intro

Compare all of that to the GeForce GTX 580, which uses a 40 nm design. nVidia has set the core frequency at 772 MHz. The GDDR5 memory works at a speed of 1002 MHz on this particular model. It features 512 SPUs as well as 64 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465		200 Watts
GeForce GTX 580		244 Watts
	Difference: 44 Watts (22%)

Memory Bandwidth

In theory, the GeForce GTX 580 should perform much faster than the GeForce GTX 465 in general. (explain)

GeForce GTX 580		192384 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 89792 (88%)

Texel Rate

The GeForce GTX 580 will be quite a bit (approximately 85%) faster with regards to texture filtering than the GeForce GTX 465. (explain)

GeForce GTX 580		49408 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 22700 (85%)

Pixel Rate

The GeForce GTX 580 will be much (approximately 91%) faster with regards to anti-aliasing than the GeForce GTX 465, and capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 17632 (91%)

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 information (measured in MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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