GeForce GT 240 GDDR5 1GB vs Radeon R9 380X

Intro

Compare those specifications to the Radeon R9 380X, which features GPU core speed of 970 MHz, and 4096 MB of GDDR5 RAM set to run at 1425 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
Radeon R9 380X		190 Watts
	Difference: 120 Watts (171%)

Memory Bandwidth

The Radeon R9 380X should theoretically perform quite a bit faster than the GeForce GT 240 GDDR5 1GB overall. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 128000 (235%)

Texel Rate

The Radeon R9 380X is a lot (more or less 605%) more effective at AF than the GeForce GT 240 GDDR5 1GB. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 106560 (605%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 380X is superior to the GeForce GT 240 GDDR5 1GB, by far. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GT 240 GDDR5 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 largest amount of data (in units of MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.