GeForce GT 440 3GB vs Radeon R5 M255

Intro

Compare all of that to the Radeon R5 M255, which makes use of a 28 nm design. AMD has set the core speed at 940 MHz. The DDR3 RAM is set to run at a frequency of 1000 MHz on this card. It features 320 SPUs as well as 20 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GT 440 3GB should perform much faster than the Radeon R5 M255 overall. (explain)

GeForce GT 440 3GB		43200 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 27200 (170%)

Texel Rate

The Radeon R5 M255 is quite a bit (approximately 32%) faster with regards to anisotropic filtering than the GeForce GT 440 3GB. (explain)

Radeon R5 M255		18800 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 4544 (32%)

Pixel Rate

The GeForce GT 440 3GB will be much (approximately 90%) more effective at AA than the Radeon R5 M255, and also capable of handling higher resolutions while still performing well. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 6736 (90%)

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 data (in units of megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, the result should 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 anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.