GeForce GT 240 GDDR5 vs Radeon HD 4730

Intro

Compare those specifications to the Radeon HD 4730, which comes with GPU core speed of 700 MHz, and 512 MB of GDDR5 memory set to run at 900 MHz through a 128-bit bus. It also features 640(128x5) SPUs, 32 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
Radeon HD 4730		140 Watts
	Difference: 70 Watts (100%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4730 should perform just a bit faster than the GeForce GT 240 GDDR5 overall. (explain)

Radeon HD 4730		57600 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 3200 (6%)

Texel Rate

The Radeon HD 4730 should be quite a bit (more or less 27%) more effective at texture filtering than the GeForce GT 240 GDDR5. (explain)

Radeon HD 4730		22400 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 4800 (27%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 4730 is superior to the GeForce GT 240 GDDR5, and very much so. (explain)

Radeon HD 4730		5600 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 1200 (27%)

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 transferred over the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could 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 colour ROPs by the the core 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 fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.