GeForce GT 340 1GB vs Radeon HD 5670

Intro

Compare that to the Radeon HD 5670, which uses a 40 nm design. AMD has set the core speed at 775 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this specific card. It features 400(80x5) SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GT 340 1GB		69 Watts
	Difference: 8 Watts (13%)

Memory Bandwidth

Performance-wise, the Radeon HD 5670 should in theory be a little bit superior to the GeForce GT 340 1GB in general. (explain)

Radeon HD 5670		64000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 9600 (18%)

Texel Rate

The GeForce GT 340 1GB is just a bit (approximately 14%) faster with regards to AF than the Radeon HD 5670. (explain)

GeForce GT 340 1GB		17600 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 2100 (14%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5670 is superior to the GeForce GT 340 1GB, and very much so. (explain)

Radeon HD 5670		6200 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 1800 (41%)

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 information (measured in megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the 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 clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.