GeForce GT 340 vs Radeon HD 5850

Intro

Compare all of that to the Radeon HD 5850, which has a GPU core clock speed of 725 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 256-bit bus. It also features 1440(288x5) Stream Processors, 72 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon HD 5850		151 Watts
	Difference: 82 Watts (119%)

Memory Bandwidth

In theory, the Radeon HD 5850 will be 135% quicker than the GeForce GT 340 overall, due to its greater data rate. (explain)

Radeon HD 5850		128000 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 73600 (135%)

Texel Rate

The Radeon HD 5850 should be a lot (about 197%) faster with regards to anisotropic filtering than the GeForce GT 340. (explain)

Radeon HD 5850		52200 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 34600 (197%)

Pixel Rate

The Radeon HD 5850 should be quite a bit (more or less 427%) faster with regards to full screen anti-aliasing than the GeForce GT 340, and able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 5850		23200 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 18800 (427%)

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 max amount of data (counted in MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its 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 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 potential to reach the max fill rate.