GeForce GT 440 3GB vs Radeon HD 4670 1GB

Intro

Compare those specifications to the Radeon HD 4670 1GB, which features a clock speed of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1100 MHz. It also features a 128-bit bus, and uses a 55 nm design. It features 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon HD 4670 1GB		70 Watts
	Difference: 14 Watts (25%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 440 3GB should be much faster than the Radeon HD 4670 1GB overall. (explain)

GeForce GT 440 3GB		43200 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 8000 (23%)

Texel Rate

The Radeon HD 4670 1GB will be much (about 68%) better at texture filtering than the GeForce GT 440 3GB. (explain)

Radeon HD 4670 1GB		24000 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 9744 (68%)

Pixel Rate

The GeForce GT 440 3GB is much (approximately 138%) more effective at anti-aliasing than the Radeon HD 4670 1GB, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GT 440 3GB		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 maximum amount of information (in units of MB per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, the result 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.