GeForce GT 240 GDDR5 vs Radeon R7 260X

Intro

Compare all that to the Radeon R7 260X, which has a GPU core clock speed of 1100 MHz, and 2048 MB of GDDR5 memory running at 1625 MHz through a 128-bit bus. It also is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
Radeon R7 260X		115 Watts
	Difference: 45 Watts (64%)

Memory Bandwidth

The Radeon R7 260X should in theory be much faster than the GeForce GT 240 GDDR5 in general. (explain)

Radeon R7 260X		104000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 49600 (91%)

Texel Rate

The Radeon R7 260X will be a lot (about 250%) faster with regards to anisotropic filtering than the GeForce GT 240 GDDR5. (explain)

Radeon R7 260X		61600 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 44000 (250%)

Pixel Rate

The Radeon R7 260X will be quite a bit (approximately 300%) faster with regards to full screen anti-aliasing than the GeForce GT 240 GDDR5, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R7 260X		17600 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 13200 (300%)

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 largest amount of information (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.