GeForce GT 240 GDDR5 1GB vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which comes with core clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs 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 M395X		125 Watts
	Difference: 55 Watts (79%)

Memory Bandwidth

In theory, the Radeon R9 M395X will be 194% faster than the GeForce GT 240 GDDR5 1GB in general, because of its greater bandwidth. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 105600 (194%)

Texel Rate

The Radeon R9 M395X should be quite a bit (more or less 426%) better at texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 74944 (426%)

Pixel Rate

The Radeon R9 M395X will be a lot (more or less 426%) better at full screen anti-aliasing than the GeForce GT 240 GDDR5 1GB, and also should be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 18736 (426%)

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 transferred over the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could 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 colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.