GeForce 830M vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which has a clock frequency of 900 MHz and a GDDR5 memory speed of 1375 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is comprised of 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon R9 M280X		75 Watts
	Difference: 50 Watts (200%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M280X will be 511% faster than the GeForce 830M overall, because of its greater bandwidth. (explain)

Radeon R9 M280X		88000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 73600 (511%)

Texel Rate

The Radeon R9 M280X will be a lot (approximately 206%) faster with regards to anisotropic filtering than the GeForce 830M. (explain)

Radeon R9 M280X		50400 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 33936 (206%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M280X is superior to the GeForce 830M, by a large margin. (explain)

Radeon R9 M280X		14400 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 6168 (75%)

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: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video 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 amount of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.