GeForce GT 440 1.5GB vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which features a core clock speed of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
Radeon HD 5770		108 Watts
	Difference: 52 Watts (93%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5770 will be 78% faster than the GeForce GT 440 1.5GB in general, because of its higher bandwidth. (explain)

Radeon HD 5770		76800 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 33600 (78%)

Texel Rate

The Radeon HD 5770 should be much (about 138%) faster with regards to anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 5770		34000 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 19744 (138%)

Pixel Rate

The GeForce GT 440 1.5GB should be a little bit (more or less 5%) more effective at anti-aliasing than the Radeon HD 5770, and will be capable of handling higher screen resolutions better. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 656 (5%)

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 information (counted in megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If 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, High Dynamic Range and high 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 number of texture units of the card by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.