GeForce GT 430 (OEM) vs Radeon HD 7790

Intro

Compare all that to the Radeon HD 7790, which has core speeds of 1000 MHz on the GPU, and 1500 MHz on the 1024 MB of GDDR5 memory. It features 896 SPUs as well as 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 (OEM)		60 Watts
Radeon HD 7790		85 Watts
	Difference: 25 Watts (42%)

Memory Bandwidth

Theoretically, the Radeon HD 7790 should be quite a bit faster than the GeForce GT 430 (OEM) in general. (explain)

Radeon HD 7790		96000 MB/sec
GeForce GT 430 (OEM)		28800 MB/sec
	Difference: 67200 (233%)

Texel Rate

The Radeon HD 7790 should be a lot (about 400%) more effective at AF than the GeForce GT 430 (OEM). (explain)

Radeon HD 7790		56000 Mtexels/sec
GeForce GT 430 (OEM)		11200 Mtexels/sec
	Difference: 44800 (400%)

Pixel Rate

The Radeon HD 7790 should be quite a bit (approximately 471%) better at FSAA than the GeForce GT 430 (OEM), and also capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 7790		16000 Mpixels/sec
GeForce GT 430 (OEM)		2800 Mpixels/sec
	Difference: 13200 (471%)

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 largest amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units of the card by the core 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 number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.