GeForce GT 440 3GB vs Radeon HD 4750

Intro

Compare those specifications to the Radeon HD 4750, which makes use of a 40 nm design. AMD has clocked the core frequency at 730 MHz. The GDDR5 RAM is set to run at a speed of 800 MHz on this specific model. It features 640(128x5) SPUs along with 32 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 4750		75 Watts
	Difference: 19 Watts (34%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4750 should be just a bit faster than the GeForce GT 440 3GB overall. (explain)

Radeon HD 4750		51200 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 8000 (19%)

Texel Rate

The Radeon HD 4750 will be much (approximately 64%) faster with regards to anisotropic filtering than the GeForce GT 440 3GB. (explain)

Radeon HD 4750		23360 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 9104 (64%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 440 3GB is the winner, by far. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 2576 (22%)

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 maximum amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high 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 texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock 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 output rate also depends 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 max fill rate.