GeForce GT 340 vs Radeon HD 5750 512MB

Intro

Compare those specs to the Radeon HD 5750 512MB, which comes with a core clock frequency of 700 MHz and a GDDR5 memory speed of 1150 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It features 720(144x5) SPUs, 36 TAUs, and 16 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 5750 512MB		86 Watts
	Difference: 17 Watts (25%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5750 512MB should theoretically be a lot superior to the GeForce GT 340 overall. (explain)

Radeon HD 5750 512MB		73600 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 19200 (35%)

Texel Rate

The Radeon HD 5750 512MB should be quite a bit (more or less 43%) faster with regards to texture filtering than the GeForce GT 340. (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 7600 (43%)

Pixel Rate

The Radeon HD 5750 512MB will be a lot (about 155%) better at full screen anti-aliasing than the GeForce GT 340, and will be capable of handling higher resolutions more effectively. (explain)

Radeon HD 5750 512MB		11200 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 6800 (155%)

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 (in units of megabytes per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once 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 texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip 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 Render Output Units by the the core speed of the card. 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 lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.