GeForce 830M vs Radeon R9 295X2

Intro

Compare that to the Radeon R9 295X2, which features core speeds of 1018 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2816 SPUs as well as 176 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

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, the Radeon R9 295X2 should be much faster than the GeForce 830M in general. (explain)

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

Texel Rate

The Radeon R9 295X2 should be quite a bit (more or less 2076%) faster with regards to AF 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 quite a bit (about 1483%) better at full screen anti-aliasing than the GeForce 830M, and also will be capable of handling higher screen resolutions more effectively. (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 maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, 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 texture units of the card by the core speed of the chip. The higher the texel rate, the better the video 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 number of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.