Geforce GTX 690 vs Radeon R9 M380

Intro

Compare all that to the Radeon R9 M380, which uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM is set to run at a frequency of 1500 MHz on this specific card. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Geforce GTX 690 should in theory be a lot better than the Radeon R9 M380 in general. (explain)

Geforce GTX 690		384512 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 288512 (301%)

Texel Rate

The Geforce GTX 690 is much (about 486%) faster with regards to AF than the Radeon R9 M380. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 194240 (486%)

Pixel Rate

The Geforce GTX 690 will be a lot (approximately 266%) more effective at AA than the Radeon R9 M380, and should be capable of handling higher screen resolutions while still performing well. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 42560 (266%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total 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 most pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 get to the max fill rate.