GeForce GTX 460 (OEM) vs GeForce GTX 650

Intro

Compare that to the GeForce GTX 650, which comes with core clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 460 (OEM)		150 Watts
	Difference: 86 Watts (134%)

Memory Bandwidth

The GeForce GTX 460 (OEM) should in theory perform a lot faster than the GeForce GTX 650 in general. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 28800 (36%)

Texel Rate

The GeForce GTX 460 (OEM) is a small bit (about 8%) more effective at anisotropic filtering than the GeForce GTX 650. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 2544 (8%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 460 (OEM) is a better choice, by a large margin. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 3872 (23%)

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 (measured in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.