Radeon R5 M230 vs Radeon R9 M390X

Intro

Compare those specifications to the Radeon R9 M390X, which features GPU clock speed of 723 MHz, and 4096 MB of GDDR5 memory running 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

Performance-wise, the Radeon R9 M390X should theoretically be quite a bit better than the Radeon R5 M230 overall. (explain)

Radeon R9 M390X		160000 MB/sec
Radeon R5 M230		16000 MB/sec
	Difference: 144000 (900%)

Texel Rate

The Radeon R9 M390X is quite a bit (approximately 493%) better at texture filtering than the Radeon R5 M230. (explain)

Radeon R9 M390X		92544 Mtexels/sec
Radeon R5 M230		15600 Mtexels/sec
	Difference: 76944 (493%)

Pixel Rate

The Radeon R9 M390X is quite a bit (about 642%) better at full screen anti-aliasing than the Radeon R5 M230, and able to handle higher screen resolutions more effectively. (explain)

Radeon R9 M390X		23136 Mpixels/sec
Radeon R5 M230		3120 Mpixels/sec
	Difference: 20016 (642%)

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 data (in units of MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 maximum number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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.