GeForce GTX 460 1GB vs GeForce GTX 650

Intro

Compare all of that to the GeForce GTX 650, which has clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 96 Watts (150%)

Memory Bandwidth

The GeForce GTX 460 1GB should theoretically be much faster than the GeForce GTX 650 in general. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 35200 (44%)

Texel Rate

The GeForce GTX 460 1GB is a small bit (about 12%) more effective at texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 3944 (12%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 460 1GB is superior to the GeForce GTX 650, by far. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 4672 (28%)

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 data (in units of MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If the card has 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at 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 chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few 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.