GeForce 830M vs Radeon R9 290

Intro

Compare those specifications to the Radeon R9 290, which has core speeds of 800 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2560 SPUs along with 160 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon R9 290		300 Watts
	Difference: 275 Watts (1100%)

Memory Bandwidth

The Radeon R9 290 should in theory be much faster than the GeForce 830M in general. (explain)

Radeon R9 290		320000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 305600 (2122%)

Texel Rate

The Radeon R9 290 will be quite a bit (approximately 677%) better at texture filtering than the GeForce 830M. (explain)

Radeon R9 290		128000 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 111536 (677%)

Pixel Rate

The Radeon R9 290 should be a lot (about 522%) faster with regards to FSAA than the GeForce 830M, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 290		51200 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 42968 (522%)

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 MB per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is worked out 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.