GeForce GT 340 vs Radeon HD 7950 3GB

Intro

Compare those specifications to the Radeon HD 7950 3GB, which comes with core speeds of 800 MHz on the GPU, and 1250 MHz on the 3072 MB of GDDR5 RAM. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 131 Watts (190%)

Memory Bandwidth

The Radeon HD 7950 3GB should in theory be a lot faster than the GeForce GT 340 in general. (explain)

Radeon HD 7950 3GB		240000 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 185600 (341%)

Texel Rate

The Radeon HD 7950 3GB will be quite a bit (about 409%) better at texture filtering than the GeForce GT 340. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 72000 (409%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7950 3GB is superior to the GeForce GT 340, by a large margin. (explain)

Radeon HD 7950 3GB		25600 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 21200 (482%)

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 maximum amount of information (counted in megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.