GeForce 830M vs Radeon R9 M290X

Intro

Compare those specifications to the Radeon R9 M290X, which makes use of a 28 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 RAM runs at a speed of 1200 MHz on this particular card. It features 1280 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon R9 M290X		100 Watts
	Difference: 75 Watts (300%)

Memory Bandwidth

The Radeon R9 M290X should theoretically be quite a bit faster than the GeForce 830M in general. (explain)

Radeon R9 M290X		153600 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 139200 (967%)

Texel Rate

The Radeon R9 M290X should be quite a bit (approximately 313%) better at AF than the GeForce 830M. (explain)

Radeon R9 M290X		68000 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 51536 (313%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 M290X is the winner, by far. (explain)

Radeon R9 M290X		27200 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 18968 (230%)

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 max amount of information (counted in MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied 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 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 number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.