GeForce GT 440 1.5GB vs Radeon R9 M275X

Intro

Compare all that to the Radeon R9 M275X, which features GPU core speed of 900 MHz, and 2048 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
GeForce GT 440 1.5GB		56 Watts
	Difference: 6 Watts (12%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M275X should perform a lot faster than the GeForce GT 440 1.5GB overall. (explain)

Radeon R9 M275X		72000 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 28800 (67%)

Texel Rate

The Radeon R9 M275X will be quite a bit (approximately 153%) faster with regards to anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

Radeon R9 M275X		36000 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 21744 (153%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M275X is superior to the GeForce GT 440 1.5GB, but not by far. (explain)

Radeon R9 M275X		14400 Mpixels/sec
GeForce GT 440 1.5GB		14256 Mpixels/sec
	Difference: 144 (1%)

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 max amount of data (measured in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.