GeForce GT 430 1GB vs GeForce GTX 650

Intro

Compare all of that to the GeForce GTX 650, which has core clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs as well as 32 TAUs 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

Theoretically, the GeForce GTX 650 should be quite a bit faster than the GeForce GT 430 1GB in general. (explain)

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

Texel Rate

The GeForce GTX 650 should be a lot (more or less 202%) faster with regards to AF 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%) more effective at anti-aliasing than the GeForce GT 430 1GB, and will be capable of handling higher screen resolutions while still performing well. (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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 texture map elements (texels) that can be processed in one second. This number is worked out 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 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 that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units 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 lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.