GeForce GT 440 1.5GB vs Radeon HD 4750

Intro

Compare those specs to the Radeon HD 4750, which features clock speeds of 730 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
Radeon HD 4750		75 Watts
	Difference: 19 Watts (34%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4750 should be a bit faster than the GeForce GT 440 1.5GB in general. (explain)

Radeon HD 4750		51200 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 8000 (19%)

Texel Rate

The Radeon HD 4750 should be much (about 64%) better at texture filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 4750		23360 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 9104 (64%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GT 440 1.5GB is the winner, and very much so. (explain)

GeForce GT 440 1.5GB		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: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.