GeForce GT 440 3GB vs Radeon HD 3690/3830

Intro

Compare all of that to the Radeon HD 3690/3830, which uses a 55 nm design. AMD has clocked the core frequency at 668 MHz. The GDDR3 memory runs at a speed of 828 MHz on this particular model. It features 320(64x5) SPUs along with 16 Texture Address Units 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 3690/3830		75 Watts
	Difference: 19 Watts (34%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 440 3GB is 63% quicker than the Radeon HD 3690/3830 in general, because of its higher bandwidth. (explain)

GeForce GT 440 3GB		43200 MB/sec
Radeon HD 3690/3830		26496 MB/sec
	Difference: 16704 (63%)

Texel Rate

The GeForce GT 440 3GB will be quite a bit (more or less 33%) better at AF than the Radeon HD 3690/3830. (explain)

GeForce GT 440 3GB		14256 Mtexels/sec
Radeon HD 3690/3830		10688 Mtexels/sec
	Difference: 3568 (33%)

Pixel Rate

The GeForce GT 440 3GB should be a lot (more or less 33%) faster with regards to FSAA than the Radeon HD 3690/3830, and also should be able to handle higher screen resolutions better. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
Radeon HD 3690/3830		10688 Mpixels/sec
	Difference: 3568 (33%)

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 data (in units of MB per second) that can be transported across 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 RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to 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 memory bandwidth is, the lower the potential to get to the max fill rate.