GeForce 830M vs Radeon R9 380 4G

Intro

Compare those specs to the Radeon R9 380 4G, which comes with a core clock frequency of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It features 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon R9 380 4G		190 Watts
	Difference: 165 Watts (660%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 4G will be 1167% faster than the GeForce 830M in general, because of its higher bandwidth. (explain)

Radeon R9 380 4G		182400 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 168000 (1167%)

Texel Rate

The Radeon R9 380 4G should be much (about 560%) better at texture filtering than the GeForce 830M. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 92176 (560%)

Pixel Rate

The Radeon R9 380 4G should be much (approximately 277%) faster with regards to FSAA than the GeForce 830M, and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 380 4G		31040 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 22808 (277%)

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 data (in units of MB per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.