GeForce GT 320 vs GeForce GTX 650

Intro

Compare those specs to the GeForce GTX 650, which features core clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 650		64 Watts
	Difference: 21 Watts (49%)

Memory Bandwidth

Performance-wise, the GeForce GTX 650 should in theory be much superior to the GeForce GT 320 overall. (explain)

GeForce GTX 650		80000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 54720 (216%)

Texel Rate

The GeForce GTX 650 is quite a bit (more or less 161%) better at texture filtering than the GeForce GT 320. (explain)

GeForce GTX 650		33856 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 20896 (161%)

Pixel Rate

The GeForce GTX 650 will be a lot (approximately 292%) more effective at AA than the GeForce GT 320, and also will be able to handle higher screen resolutions better. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 12608 (292%)

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 maximum amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied 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 the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.