GeForce GT 240 GDDR5 vs Radeon HD 4730

Intro

Compare those specifications to the Radeon HD 4730, which uses a 55 nm design. AMD has set the core frequency at 700 MHz. The GDDR5 RAM is set to run at a speed of 900 MHz on this model. It features 640(128x5) SPUs as well as 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 in theory be a small 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 much (approximately 27%) more effective at 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

If using high levels of AA is important to you, then the Radeon HD 4730 is superior to the GeForce GT 240 GDDR5, by far. (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 megabytes per second) that can be transported past 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 RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. 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 is also dependant 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.