GeForce GT 340 vs Radeon HD 3850 1GB

Intro

Compare those specs to the Radeon HD 3850 1GB, which features a clock frequency of 668 MHz and a GDDR3 memory frequency of 828 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It features 320(64x5) SPUs, 16 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon HD 3850 1GB		75 Watts
	Difference: 6 Watts (9%)

Memory Bandwidth

The GeForce GT 340 should in theory perform a bit faster than the Radeon HD 3850 1GB overall. (explain)

GeForce GT 340		54400 MB/sec
Radeon HD 3850 1GB		52992 MB/sec
	Difference: 1408 (3%)

Texel Rate

The GeForce GT 340 will be a lot (more or less 65%) better at texture filtering than the Radeon HD 3850 1GB. (explain)

GeForce GT 340		17600 Mtexels/sec
Radeon HD 3850 1GB		10688 Mtexels/sec
	Difference: 6912 (65%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 3850 1GB is a better choice, by far. (explain)

Radeon HD 3850 1GB		10688 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 6288 (143%)

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 largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called 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 of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.