Radeon HD 3470 256MB vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which has GPU core speed of 723 MHz, and 4096 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also is comprised of 2048 Stream Processors, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M395X, in theory, should be a lot faster than the Radeon HD 3470 256MB overall. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon HD 3470 256MB		30400 MB/sec
	Difference: 129600 (426%)

Texel Rate

The Radeon R9 M395X should be much (more or less 2792%) faster with regards to AF than the Radeon HD 3470 256MB. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon HD 3470 256MB		3200 Mtexels/sec
	Difference: 89344 (2792%)

Pixel Rate

The Radeon R9 M395X is a lot (approximately 623%) better at FSAA than the Radeon HD 3470 256MB, and will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon HD 3470 256MB		3200 Mpixels/sec
	Difference: 19936 (623%)

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 information (in units of megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen 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 number of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.