GeForce GT 430 (OEM) vs Radeon HD 6790

Intro

Compare that to the Radeon HD 6790, which comes with a clock speed of 840 MHz and a GDDR5 memory frequency of 1050 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 800 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 (OEM)		60 Watts
Radeon HD 6790		150 Watts
	Difference: 90 Watts (150%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6790 should be quite a bit faster than the GeForce GT 430 (OEM) overall. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GT 430 (OEM)		28800 MB/sec
	Difference: 105600 (367%)

Texel Rate

The Radeon HD 6790 will be a lot (about 200%) better at texture filtering than the GeForce GT 430 (OEM). (explain)

Radeon HD 6790		33600 Mtexels/sec
GeForce GT 430 (OEM)		11200 Mtexels/sec
	Difference: 22400 (200%)

Pixel Rate

The Radeon HD 6790 should be a lot (about 380%) faster with regards to anti-aliasing than the GeForce GT 430 (OEM), and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 6790		13440 Mpixels/sec
GeForce GT 430 (OEM)		2800 Mpixels/sec
	Difference: 10640 (380%)

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 data (in units of MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the card will be at 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 chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.