GeForce GT 440 3GB vs Radeon HD 7950 3GB

Intro

Compare those specifications to the Radeon HD 7950 3GB, which comes with a core clock frequency of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 384-bit memory bus, and makes use of a 28 nm design. It features 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 144 Watts (257%)

Memory Bandwidth

Theoretically, the Radeon HD 7950 3GB should be a lot faster than the GeForce GT 440 3GB overall. (explain)

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

Texel Rate

The Radeon HD 7950 3GB is quite a bit (about 529%) more effective at anisotropic filtering than the GeForce GT 440 3GB. (explain)

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

Pixel Rate

The Radeon HD 7950 3GB will be quite a bit (more or less 80%) better at anti-aliasing than the GeForce GT 440 3GB, and also should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 7950 3GB		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 maximum amount of data (counted in MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.