GeForce GT 430 1GB vs GeForce GTX 650

Intro

Compare 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 as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
GeForce GTX 650		64 Watts
	Difference: 4 Watts (7%)

Memory Bandwidth

The GeForce GTX 650 should theoretically be much faster than the GeForce GT 430 1GB overall. (explain)

GeForce GTX 650		80000 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 51200 (178%)

Texel Rate

The GeForce GTX 650 will be much (approximately 202%) better at texture filtering than the GeForce GT 430 1GB. (explain)

GeForce GTX 650		33856 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 22656 (202%)

Pixel Rate

The GeForce GTX 650 will be quite a bit (approximately 505%) better at FSAA than the GeForce GT 430 1GB, and should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 14128 (505%)

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 max amount of information (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). 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 ability to get to the max fill rate.