GeForce GT 340 1GB vs Radeon R9 380 2G

Intro

Compare all that to the Radeon R9 380 2G, which has a core clock speed of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is comprised 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 1GB		69 Watts
Radeon R9 380 2G		190 Watts
	Difference: 121 Watts (175%)

Memory Bandwidth

The Radeon R9 380 2G, in theory, should perform quite a bit faster than the GeForce GT 340 1GB overall. (explain)

Radeon R9 380 2G		182400 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 128000 (235%)

Texel Rate

The Radeon R9 380 2G will be a lot (about 517%) faster with regards to texture filtering than the GeForce GT 340 1GB. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 91040 (517%)

Pixel Rate

If using a high resolution 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 1GB		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: Bandwidth is the max amount of data (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.