GeForce GT 340 1GB vs Radeon R9 270

Intro

Compare those specs to the Radeon R9 270, which comes with GPU clock speed of 900 MHz, and 2048 MB of GDDR5 memory set to run at 1400 MHz through a 256-bit bus. It also is comprised of 1280 Stream Processors, 80 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Radeon R9 270		150 Watts
	Difference: 81 Watts (117%)

Memory Bandwidth

In theory, the Radeon R9 270 is 229% faster than the GeForce GT 340 1GB overall, because of its greater data rate. (explain)

Radeon R9 270		179200 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 124800 (229%)

Texel Rate

The Radeon R9 270 is much (approximately 309%) better at anisotropic filtering than the GeForce GT 340 1GB. (explain)

Radeon R9 270		72000 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 54400 (309%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 270 is superior to the GeForce GT 340 1GB, and very much so. (explain)

Radeon R9 270		28800 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 24400 (555%)

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 information (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at handling 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 could possibly record to the local memory in a 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 - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.