GeForce GT 440 1.5GB vs Radeon HD 4670 1GB

Intro

Compare all that to the Radeon HD 4670 1GB, which has a GPU core clock speed of 750 MHz, and 1024 MB of GDDR4/GDDR3/DDR3/DDR2 RAM running at 1100 MHz through a 128-bit bus. It also is made up of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
Radeon HD 4670 1GB		70 Watts
	Difference: 14 Watts (25%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 440 1.5GB will be 23% faster than the Radeon HD 4670 1GB overall, because of its greater bandwidth. (explain)

GeForce GT 440 1.5GB		43200 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 8000 (23%)

Texel Rate

The Radeon HD 4670 1GB is a lot (approximately 68%) better at AF than the GeForce GT 440 1.5GB. (explain)

Radeon HD 4670 1GB		24000 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 9744 (68%)

Pixel Rate

The GeForce GT 440 1.5GB is quite a bit (approximately 138%) faster with regards to full screen anti-aliasing than the Radeon HD 4670 1GB, and also will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 8256 (138%)

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 max amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, 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 is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.