GeForce GT 430 1GB vs Radeon R9 390X 8G

Intro

Compare those specs to the Radeon R9 390X 8G, which comes with a core clock frequency of 1050 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 512-bit bus, and uses a 28 nm design. It features 2816 SPUs, 176 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 215 Watts (358%)

Memory Bandwidth

Performance-wise, the Radeon R9 390X 8G should theoretically be quite a bit superior to the GeForce GT 430 1GB overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 355200 (1233%)

Texel Rate

The Radeon R9 390X 8G is quite a bit (about 1550%) more effective at AF than the GeForce GT 430 1GB. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 173600 (1550%)

Pixel Rate

The Radeon R9 390X 8G is much (more or less 2300%) better at AA than the GeForce GT 430 1GB, and able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 64400 (2300%)

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 (counted in megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.