GeForce GT 440 1.5GB vs Radeon HD 4850 2GB

Intro

Compare those specifications to the Radeon HD 4850 2GB, which has GPU clock speed of 625 MHz, and 2048 MB of GDDR4 RAM set to run at 993 MHz through a 256-bit bus. It also is made up of 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
Radeon HD 4850 2GB		110 Watts
	Difference: 54 Watts (96%)

Memory Bandwidth

The Radeon HD 4850 2GB should in theory perform quite a bit faster than the GeForce GT 440 1.5GB overall. (explain)

Radeon HD 4850 2GB		63552 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 20352 (47%)

Texel Rate

The Radeon HD 4850 2GB will be much (approximately 75%) faster with regards to anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 4850 2GB		25000 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 10744 (75%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GT 440 1.5GB is a better choice, by a large margin. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 4850 2GB		10000 Mpixels/sec
	Difference: 4256 (43%)

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 max amount of data (counted in megabytes per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 can be processed per second. This number is worked out by multiplying the total number of 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated 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 drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.