GeForce GTS 150 vs Radeon R7 240

Intro

Compare all of that to the Radeon R7 240, which has a GPU core clock speed of 730 MHz, and 2048 MB of DDR3 memory set to run at 900 MHz through a 128-bit bus. It also is comprised of 320 Stream Processors, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GTS 150		141 Watts
	Difference: 111 Watts (370%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 150 will be 11% quicker than the Radeon R7 240 overall, due to its higher data rate. (explain)

GeForce GTS 150		32000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 3200 (11%)

Texel Rate

The GeForce GTS 150 will be a lot (about 224%) better at anisotropic filtering than the Radeon R7 240. (explain)

GeForce GTS 150		47360 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 32760 (224%)

Pixel Rate

The GeForce GTS 150 is a lot (more or less 103%) more effective at full screen anti-aliasing than the Radeon R7 240, and able to handle higher resolutions without slowing down too much. (explain)

GeForce GTS 150		11840 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 6000 (103%)

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 maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.