GeForce GT 440 3GB vs Radeon HD 4650 512MB

Intro

Compare all of that to the Radeon HD 4650 512MB, which comes with core clock speeds of 600 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 memory. It features 320(64x5) SPUs along with 32 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 512MB		55 Watts
GeForce GT 440 3GB		56 Watts
	Difference: 1 Watts (2%)

Memory Bandwidth

As far as performance goes, the GeForce GT 440 3GB should theoretically be quite a bit superior to the Radeon HD 4650 512MB in general. (explain)

GeForce GT 440 3GB		43200 MB/sec
Radeon HD 4650 512MB		16000 MB/sec
	Difference: 27200 (170%)

Texel Rate

The Radeon HD 4650 512MB is a lot (approximately 35%) faster with regards to anisotropic filtering than the GeForce GT 440 3GB. (explain)

Radeon HD 4650 512MB		19200 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 4944 (35%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GT 440 3GB is a better choice, by far. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
Radeon HD 4650 512MB		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 largest amount of data (in units of MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units of the card by the core 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines 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 fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.