GeForce GT 440 3GB vs Radeon HD 7950

Intro

Compare all of that to the Radeon HD 7950, which comes with a core clock speed of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also uses a 384-bit bus, and uses a 28 nm design. It features 1792 SPUs, 112 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 HD 7950		200 Watts
	Difference: 144 Watts (257%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7950 should be quite a bit faster than the GeForce GT 440 3GB in general. (explain)

Radeon HD 7950		240000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 196800 (456%)

Texel Rate

The Radeon HD 7950 should be much (more or less 529%) faster with regards to texture filtering than the GeForce GT 440 3GB. (explain)

Radeon HD 7950		89600 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 75344 (529%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7950 is superior to the GeForce GT 440 3GB, by far. (explain)

Radeon HD 7950		25600 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 11344 (80%)

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 largest amount of data (in units of MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.