GeForce GT 240 GDDR5 vs Radeon R9 380 2G

Intro

Compare that to the Radeon R9 380 2G, which features a GPU core clock speed of 970 MHz, and 2048 MB of GDDR5 memory running at 1425 MHz through a 256-bit bus. It also is comprised of 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
Radeon R9 380 2G		190 Watts
	Difference: 120 Watts (171%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 2G should be a lot faster than the GeForce GT 240 GDDR5 overall. (explain)

Radeon R9 380 2G		182400 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 128000 (235%)

Texel Rate

The Radeon R9 380 2G should be quite a bit (approximately 517%) faster with regards to anisotropic filtering than the GeForce GT 240 GDDR5. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 91040 (517%)

Pixel Rate

The Radeon R9 380 2G will be much (approximately 605%) faster with regards to anti-aliasing than the GeForce GT 240 GDDR5, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
GeForce GT 240 GDDR5		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 MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the card's interface 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 better the bandwidth is, the better 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 applied in one second. This number is calculated by multiplying the total texture units of the card 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines 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 many 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.