GeForce GT 440 3GB vs Radeon HD 4850 512MB

Intro

Compare all of that to the Radeon HD 4850 512MB, which has core speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 memory. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon HD 4850 512MB		110 Watts
	Difference: 54 Watts (96%)

Memory Bandwidth

In theory, the Radeon HD 4850 512MB should be much faster than the GeForce GT 440 3GB in general. (explain)

Radeon HD 4850 512MB		63552 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 20352 (47%)

Texel Rate

The Radeon HD 4850 512MB should be quite a bit (more or less 75%) faster with regards to AF than the GeForce GT 440 3GB. (explain)

Radeon HD 4850 512MB		25000 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 10744 (75%)

Pixel Rate

The GeForce GT 440 3GB will be much (more or less 43%) more effective at anti-aliasing than the Radeon HD 4850 512MB, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
Radeon HD 4850 512MB		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: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics 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 most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.