GeForce GT 340 vs Radeon R9 280X

Intro

Compare that to the Radeon R9 280X, which has a GPU core clock speed of 850 MHz, and 3072 MB of GDDR5 memory set to run at 1500 MHz through a 384-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon R9 280X		250 Watts
	Difference: 181 Watts (262%)

Memory Bandwidth

In theory, the Radeon R9 280X should be much faster than the GeForce GT 340 in general. (explain)

Radeon R9 280X		288000 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 233600 (429%)

Texel Rate

The Radeon R9 280X should be much (about 518%) better at anisotropic filtering than the GeForce GT 340. (explain)

Radeon R9 280X		108800 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 91200 (518%)

Pixel Rate

The Radeon R9 280X will be a lot (more or less 518%) faster with regards to anti-aliasing than the GeForce GT 340, and also should be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 280X		27200 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 22800 (518%)

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 data (counted in megabytes per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 are processed in one second. This number is calculated by multiplying the total amount 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 in one second.

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