GeForce 830M vs Radeon R9 M295X

Intro

Compare that to the Radeon R9 M295X, which features a clock speed of 750 MHz and a GDDR5 memory speed of 1375 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon R9 M295X		125 Watts
	Difference: 100 Watts (400%)

Memory Bandwidth

In theory, the Radeon R9 M295X will be 1122% faster than the GeForce 830M overall, due to its greater data rate. (explain)

Radeon R9 M295X		176000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 161600 (1122%)

Texel Rate

The Radeon R9 M295X is a lot (about 483%) faster with regards to anisotropic filtering than the GeForce 830M. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 79536 (483%)

Pixel Rate

The Radeon R9 M295X will be quite a bit (approximately 192%) faster with regards to AA than the GeForce 830M, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 M295X		24000 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 15768 (192%)

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 information (measured in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it must 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 anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the 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 the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.