GeForce GTX 460 2GB vs Radeon HD 7790

Intro

Compare those specs to the Radeon HD 7790, which features core clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 1024 MB of GDDR5 memory. It features 896 SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 75 Watts (88%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 2GB will be 20% quicker than the Radeon HD 7790 in general, because of its higher data rate. (explain)

GeForce GTX 460 2GB		115200 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 19200 (20%)

Texel Rate

The Radeon HD 7790 should be quite a bit (about 48%) more effective at anisotropic filtering than the GeForce GTX 460 2GB. (explain)

Radeon HD 7790		56000 Mtexels/sec
GeForce GTX 460 2GB		37800 Mtexels/sec
	Difference: 18200 (48%)

Pixel Rate

The GeForce GTX 460 2GB is quite a bit (about 35%) more effective at AA than the Radeon HD 7790, and capable of handling higher screen resolutions better. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 5600 (35%)

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 (measured in MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. 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 fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.