GeForce 830M vs Radeon R9 270X

Intro

Compare those specs to the Radeon R9 270X, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM runs at a frequency of 1400 MHz on this card. It features 1280 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon R9 270X		180 Watts
	Difference: 155 Watts (620%)

Memory Bandwidth

In theory, the Radeon R9 270X should perform a lot faster than the GeForce 830M overall. (explain)

Radeon R9 270X		179200 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 164800 (1144%)

Texel Rate

The Radeon R9 270X is much (more or less 386%) more effective at AF than the GeForce 830M. (explain)

Radeon R9 270X		80000 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 63536 (386%)

Pixel Rate

The Radeon R9 270X will be much (more or less 289%) more effective at AA than the GeForce 830M, and also able to handle higher resolutions while still performing well. (explain)

Radeon R9 270X		32000 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 23768 (289%)

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 maximum amount of information (measured in MB per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the 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 processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.