GeForce GT 340 vs Radeon HD 7950

Intro

Compare those specs to the Radeon HD 7950, which has clock speeds of 800 MHz on the GPU, and 1250 MHz on the 1536 MB of GDDR5 memory. It features 1792 SPUs as well as 112 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon HD 7950, in theory, should be much faster than the GeForce GT 340 overall. (explain)

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

Texel Rate

The Radeon HD 7950 should be a lot (more or less 409%) better at texture filtering than the GeForce GT 340. (explain)

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

Pixel Rate

The Radeon HD 7950 will be a lot (more or less 482%) faster with regards to FSAA than the GeForce GT 340, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 7950		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: Bandwidth is the maximum amount of data (measured in MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the 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 number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs 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 also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.