GeForce GT 440 3GB vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which has core clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 RAM. It features 2560 SPUs as well as 160 TAUs and 64 ROPs.

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

Performance-wise, the Radeon R9 390 8G should in theory be much superior to 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 will be quite a bit (about 1022%) faster with regards to anisotropic filtering 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

If using a high screen resolution is important to you, then the Radeon R9 390 8G is the winner, by a large margin. (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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 processed in one second. This number is calculated 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 applied per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of 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 is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.