GeForce GT 240 GDDR5 vs Radeon R7 240

Intro

Compare all of that to the Radeon R7 240, which uses a 28 nm design. AMD has set the core speed at 730 MHz. The DDR3 RAM runs at a frequency of 900 MHz on this model. It features 320 SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 40 Watts (133%)

Memory Bandwidth

Performance-wise, the GeForce GT 240 GDDR5 should in theory be a lot superior to the Radeon R7 240 in general. (explain)

GeForce GT 240 GDDR5		54400 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 25600 (89%)

Texel Rate

The GeForce GT 240 GDDR5 should be a lot (more or less 21%) better at AF than the Radeon R7 240. (explain)

GeForce GT 240 GDDR5		17600 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 3000 (21%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R7 240 is superior to the GeForce GT 240 GDDR5, by a large margin. (explain)

Radeon R7 240		5840 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 1440 (33%)

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 maximum amount of data (counted in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.