GeForce GT 440 3GB vs Radeon HD 5450

Intro

Compare all that to the Radeon HD 5450, which uses a 40 nm design. AMD has clocked the core frequency at 650 MHz. The DDR3 memory works at a speed of 800 MHz on this specific model. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GT 440 3GB		56 Watts
	Difference: 37 Watts (195%)

Memory Bandwidth

The GeForce GT 440 3GB should theoretically perform a lot faster than the Radeon HD 5450 in general. (explain)

GeForce GT 440 3GB		43200 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 30400 (238%)

Texel Rate

The GeForce GT 440 3GB should be much (approximately 174%) faster with regards to anisotropic filtering than the Radeon HD 5450. (explain)

GeForce GT 440 3GB		14256 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 9056 (174%)

Pixel Rate

The GeForce GT 440 3GB is quite a bit (about 448%) more effective at anti-aliasing than the Radeon HD 5450, and also should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 11656 (448%)

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 data (in units of megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out 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 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 can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock 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 fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.