GeForce 830M vs Radeon R9 295X2

Intro

Compare those specs to the Radeon R9 295X2, which features a GPU core clock speed of 1018 MHz, and 4096 MB of GDDR5 RAM set to run at 1250 MHz through a 512-bit bus. It also is comprised of 2816 Stream Processors, 176 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon R9 295X2		500 Watts
	Difference: 475 Watts (1900%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 295X2 should be 4344% faster than the GeForce 830M in general, because of its higher data rate. (explain)

Radeon R9 295X2		640000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 625600 (4344%)

Texel Rate

The Radeon R9 295X2 will be quite a bit (about 2076%) better at anisotropic filtering than the GeForce 830M. (explain)

Radeon R9 295X2		358336 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 341872 (2076%)

Pixel Rate

The Radeon R9 295X2 is much (more or less 1483%) more effective at AA than the GeForce 830M, and also capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 295X2		130304 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 122072 (1483%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.