GeForce GTX 580 vs GeForce GTX 650

Intro

Compare all of that to the GeForce GTX 650, which features GPU core speed of 1058 MHz, and 1024 MB of GDDR5 RAM set to run at 1250 MHz through a 128-bit bus. It also is made up of 384 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 580		4956 points
GeForce GTX 650		2263 points
	Difference: 2693 (119%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 580		244 Watts
	Difference: 180 Watts (281%)

Memory Bandwidth

In theory, the GeForce GTX 580 is 140% quicker than the GeForce GTX 650 overall, because of its greater bandwidth. (explain)

GeForce GTX 580		192384 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 112384 (140%)

Texel Rate

The GeForce GTX 580 will be much (more or less 46%) faster with regards to texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 580		49408 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 15552 (46%)

Pixel Rate

The GeForce GTX 580 should be much (about 119%) more effective at full screen anti-aliasing than the GeForce GTX 650, and able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 20128 (119%)

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 transferred past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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 potential to get to the maximum fill rate.