GeForce GT 440 1.5GB vs Radeon HD 4650 1GB

Intro

Compare that to the Radeon HD 4650 1GB, which features a core clock speed of 600 MHz and a GDDR3 memory speed of 700 MHz. It also uses a 128-bit bus, and makes use of a 55 nm design. It features 320(64x5) SPUs, 32 TAUs, 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% faster than the Radeon HD 4650 1GB in general, because of its greater 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 much (about 35%) faster with regards to texture filtering 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 should be much (about 197%) better at anti-aliasing than the Radeon HD 4650 1GB, and also will be capable of handling higher resolutions more effectively. (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 maximum amount of data (in units of MB per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 can be applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.