GeForce GT 440 1.5GB vs Radeon HD 4650 1GB

Intro

Compare those specifications to the Radeon HD 4650 1GB, which comes with GPU clock speed of 600 MHz, and 1024 MB of GDDR3 memory set to run at 700 MHz through a 128-bit bus. It also is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB		55 Watts
GeForce GT 440 1.5GB		56 Watts
	Difference: 1 Watts (2%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 440 1.5GB is 93% quicker than the Radeon HD 4650 1GB in general, because of its higher data rate. (explain)

GeForce GT 440 1.5GB		43200 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 20800 (93%)

Texel Rate

The Radeon HD 4650 1GB should be quite a bit (approximately 35%) more effective at AF than the GeForce GT 440 1.5GB. (explain)

Radeon HD 4650 1GB		19200 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 4944 (35%)

Pixel Rate

The GeForce GT 440 1.5GB is a lot (more or less 197%) better at FSAA than the Radeon HD 4650 1GB, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 9456 (197%)

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 across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video 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 most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.