GeForce 830M vs Radeon R9 290X

Intro

Compare all of that to the Radeon R9 290X, which uses a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM works at a speed of 1250 MHz on this specific model. It features 2816 SPUs along with 176 TAUs and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon R9 290X		300 Watts
	Difference: 275 Watts (1100%)

Memory Bandwidth

Performance-wise, the Radeon R9 290X should in theory be a lot better than the GeForce 830M in general. (explain)

Radeon R9 290X		320000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 305600 (2122%)

Texel Rate

The Radeon R9 290X is much (more or less 755%) better at AF than the GeForce 830M. (explain)

Radeon R9 290X		140800 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 124336 (755%)

Pixel Rate

The Radeon R9 290X is a lot (about 522%) faster with regards to AA than the GeForce 830M, and also should be capable of handling higher resolutions better. (explain)

Radeon R9 290X		51200 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 42968 (522%)

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 largest amount of information (in units of MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 reach the max fill rate.