GeForce GT 340 1GB vs Radeon HD 4730

Intro

Compare those specs to the Radeon HD 4730, which comes with a core clock frequency of 700 MHz and a GDDR5 memory speed of 900 MHz. It also uses a 128-bit bus, and makes use of a 55 nm design. It is made up of 640(128x5) SPUs, 32 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Radeon HD 4730		140 Watts
	Difference: 71 Watts (103%)

Memory Bandwidth

Performance-wise, the Radeon HD 4730 should theoretically be just a bit superior to the GeForce GT 340 1GB overall. (explain)

Radeon HD 4730		57600 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 3200 (6%)

Texel Rate

The Radeon HD 4730 will be much (approximately 27%) more effective at anisotropic filtering than the GeForce GT 340 1GB. (explain)

Radeon HD 4730		22400 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 4800 (27%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 4730 is the winner, and very much so. (explain)

Radeon HD 4730		5600 Mpixels/sec
GeForce GT 340 1GB		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 maximum amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.