GeForce GT 340 vs Radeon HD 4730

Intro

Compare all that to the Radeon HD 4730, which uses a 55 nm design. AMD has set the core speed at 700 MHz. The GDDR5 RAM works at a frequency of 900 MHz on this specific card. It features 640(128x5) SPUs along with 32 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon HD 4730		140 Watts
	Difference: 71 Watts (103%)

Memory Bandwidth

The Radeon HD 4730 should in theory be a bit faster than the GeForce GT 340 overall. (explain)

Radeon HD 4730		57600 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 3200 (6%)

Texel Rate

The Radeon HD 4730 should be much (more or less 27%) more effective at AF than the GeForce GT 340. (explain)

Radeon HD 4730		22400 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 4800 (27%)

Pixel Rate

The Radeon HD 4730 should be much (about 27%) more effective at FSAA than the GeForce GT 340, and also will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 4730		5600 Mpixels/sec
GeForce GT 340		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 max amount of data (counted in megabytes per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.