Radeon HD 3690/3830 vs Radeon R9 M375

Intro

Compare those specifications to the Radeon R9 M375, which comes with clock speeds of 1015 MHz on the GPU, and 1100 MHz on the 4096 MB of DDR3 RAM. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M375 should perform quite a bit faster than the Radeon HD 3690/3830 in general. (explain)

Radeon R9 M375		35200 MB/sec
Radeon HD 3690/3830		26496 MB/sec
	Difference: 8704 (33%)

Texel Rate

The Radeon R9 M375 will be a lot (about 280%) better at anisotropic filtering than the Radeon HD 3690/3830. (explain)

Radeon R9 M375		40600 Mtexels/sec
Radeon HD 3690/3830		10688 Mtexels/sec
	Difference: 29912 (280%)

Pixel Rate

The Radeon R9 M375 should be quite a bit (more or less 52%) more effective at AA than the Radeon HD 3690/3830, and will be capable of handling higher screen resolutions better. (explain)

Radeon R9 M375		16240 Mpixels/sec
Radeon HD 3690/3830		10688 Mpixels/sec
	Difference: 5552 (52%)

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 maximum amount of information (counted in megabytes per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.