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 RAM set to run at 900 MHz through a 128-bit bus. It also features 640(128x5) Stream Processors, 32 TAUs, and 8 ROPs.

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

Performance-wise, the Radeon HD 4730 should theoretically be just a bit superior to the GeForce GT 240 GDDR5 in general. (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 (about 27%) faster with regards to anisotropic 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

The Radeon HD 4730 is a lot (about 27%) faster with regards to FSAA than the GeForce GT 240 GDDR5, and will be able to handle higher resolutions more effectively. (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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units by the core clock 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 could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.