GeForce GT 340 vs Radeon R9 270

Intro

Compare those specifications to the Radeon R9 270, which makes use of a 28 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 memory runs at a frequency of 1400 MHz on this specific card. It features 1280 SPUs along with 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Performance-wise, the Radeon R9 270 should in theory be quite a bit better than the GeForce GT 340 overall. (explain)

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

Texel Rate

The Radeon R9 270 is quite a bit (approximately 309%) more effective at anisotropic filtering than the GeForce GT 340. (explain)

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

Pixel Rate

The Radeon R9 270 is quite a bit (more or less 555%) faster with regards to full screen anti-aliasing than the GeForce GT 340, and will be capable of handling higher resolutions more effectively. (explain)

Radeon R9 270		28800 Mpixels/sec
GeForce GT 340		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: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 can be processed per second. This figure is calculated by multiplying the total amount of texture units 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 in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs 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 output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.