GeForce GT 440 3GB vs Radeon R9 M390X

Intro

Compare those specs to the Radeon R9 M390X, which comes with a GPU core clock speed of 723 MHz, and 4096 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon R9 M390X		125 Watts
	Difference: 69 Watts (123%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M390X should in theory be a lot better than the GeForce GT 440 3GB in general. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 116800 (270%)

Texel Rate

The Radeon R9 M390X should be much (about 549%) faster with regards to texture filtering than the GeForce GT 440 3GB. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 78288 (549%)

Pixel Rate

The Radeon R9 M390X is quite a bit (more or less 62%) better at FSAA than the GeForce GT 440 3GB, and will be able to handle higher resolutions more effectively. (explain)

Radeon R9 M390X		23136 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 8880 (62%)

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 largest amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.