GeForce GT 440 3GB vs Radeon R9 390 8G

Intro

Compare those specifications to the Radeon R9 390 8G, which uses a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this particular model. It features 2560 SPUs along with 160 TAUs 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

The Radeon R9 390 8G, in theory, should perform 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 should be quite a bit (about 1022%) more effective 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 much (more or less 349%) more effective at anti-aliasing than the GeForce GT 440 3GB, and also able to handle higher resolutions better. (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 data (in units of MB per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs 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 output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.