GeForce GTX 460 2GB vs Radeon R5 M230

Intro

Compare those specifications to the Radeon R5 M230, which comes with GPU clock speed of 780 MHz, and 2048 MB of DDR3 memory set to run at 1000 MHz through a 64-bit bus. It also is made up of 320 Stream Processors, 20 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 460 2GB should in theory be much faster than the Radeon R5 M230 overall. (explain)

GeForce GTX 460 2GB		115200 MB/sec
Radeon R5 M230		16000 MB/sec
	Difference: 99200 (620%)

Texel Rate

The GeForce GTX 460 2GB should be much (approximately 142%) more effective at texture filtering than the Radeon R5 M230. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
Radeon R5 M230		15600 Mtexels/sec
	Difference: 22200 (142%)

Pixel Rate

The GeForce GTX 460 2GB should be quite a bit (about 592%) better at full screen anti-aliasing than the Radeon R5 M230, and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
Radeon R5 M230		3120 Mpixels/sec
	Difference: 18480 (592%)

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 data (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should 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 calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.