GeForce GT 340 1GB vs Radeon HD 4670 1GB

Intro

Compare those specifications to the Radeon HD 4670 1GB, which comes with a GPU core clock speed of 750 MHz, and 1024 MB of GDDR4/GDDR3/DDR3/DDR2 RAM running at 1100 MHz through a 128-bit bus. It also features 320(64x5) Stream Processors, 32 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Radeon HD 4670 1GB		70 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

The GeForce GT 340 1GB should theoretically be a lot faster than the Radeon HD 4670 1GB in general. (explain)

GeForce GT 340 1GB		54400 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 19200 (55%)

Texel Rate

The Radeon HD 4670 1GB will be a lot (approximately 36%) more effective at texture filtering than the GeForce GT 340 1GB. (explain)

Radeon HD 4670 1GB		24000 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 6400 (36%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 4670 1GB is superior to the GeForce GT 340 1GB, by far. (explain)

Radeon HD 4670 1GB		6000 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 1600 (36%)

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 (counted in megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.