GeForce GT 340 1GB vs Radeon HD 4730

Intro

Compare 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 speed of 900 MHz on this particular card. It features 640(128x5) SPUs as well as 32 TAUs and 8 Rasterization Operator 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

Theoretically speaking, the Radeon HD 4730 will be 6% faster than the GeForce GT 340 1GB in general, because of its greater data rate. (explain)

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

Texel Rate

The Radeon HD 4730 is much (approximately 27%) more effective at AF 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 running with a high resolution is important to you, then the Radeon HD 4730 is superior to the GeForce GT 340 1GB, 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: Bandwidth is the max amount of data (measured in megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). 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 reach the max fill rate.