GeForce GT 340 vs Radeon R9 380 2G

Intro

Compare those specifications to the Radeon R9 380 2G, which comes with a core clock frequency of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is made up of 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon R9 380 2G		190 Watts
	Difference: 121 Watts (175%)

Memory Bandwidth

The Radeon R9 380 2G, in theory, should be a lot faster than the GeForce GT 340 in general. (explain)

Radeon R9 380 2G		182400 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 128000 (235%)

Texel Rate

The Radeon R9 380 2G is much (more or less 517%) more effective at texture filtering than the GeForce GT 340. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 91040 (517%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 380 2G is a better choice, by a large margin. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 26640 (605%)

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 (measured in megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock 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 is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.