GeForce GT 440 3GB vs Radeon HD 6770 1GB

Intro

Compare those specifications to the Radeon HD 6770 1GB, which makes use of a 40 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 memory runs at a frequency of 1050 MHz on this card. It features 800 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon HD 6770 1GB		108 Watts
	Difference: 52 Watts (93%)

Memory Bandwidth

The Radeon HD 6770 1GB should in theory be much faster than the GeForce GT 440 3GB overall. (explain)

Radeon HD 6770 1GB		67200 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 24000 (56%)

Texel Rate

The Radeon HD 6770 1GB is much (approximately 153%) faster with regards to AF than the GeForce GT 440 3GB. (explain)

Radeon HD 6770 1GB		36000 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 21744 (153%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6770 1GB is a better choice, though not by far. (explain)

Radeon HD 6770 1GB		14400 Mpixels/sec
GeForce GT 440 3GB		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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, 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 amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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