GeForce GTX 465 vs GeForce GTX 580 3GB

Intro

Compare that to the GeForce GTX 580 3GB, which uses a 40 nm design. nVidia has set the core frequency at 772 MHz. The GDDR5 memory runs at a frequency of 1002 MHz on this particular card. It features 512 SPUs along with 64 TAUs 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 3GB		244 Watts
	Difference: 44 Watts (22%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 3GB should in theory be much superior to the GeForce GTX 465 in general. (explain)

GeForce GTX 580 3GB		192384 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 89792 (88%)

Texel Rate

The GeForce GTX 580 3GB will be a lot (more or less 85%) better at texture filtering than the GeForce GTX 465. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 22700 (85%)

Pixel Rate

The GeForce GTX 580 3GB is much (approximately 91%) faster with regards to anti-aliasing than the GeForce GTX 465, and should be capable of handling higher resolutions better. (explain)

GeForce GTX 580 3GB		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 data (in units of megabytes per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, 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 number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 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 clock 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.