GeForce GT 440 3GB vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 RAM runs at a speed of 1500 MHz on this model. It features 2560 SPUs as well as 160 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon R9 390 8G		275 Watts
	Difference: 219 Watts (391%)

Memory Bandwidth

In theory, the Radeon R9 390 8G should be much faster than the GeForce GT 440 3GB in general. (explain)

Radeon R9 390 8G		384000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 340800 (789%)

Texel Rate

The Radeon R9 390 8G is quite a bit (about 1022%) better at AF than the GeForce GT 440 3GB. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 145744 (1022%)

Pixel Rate

The Radeon R9 390 8G should be a lot (more or less 349%) better at anti-aliasing than the GeForce GT 440 3GB, and will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 49744 (349%)

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 (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling 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 card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.