Radeon R5 M330 vs Radeon R9 M390X

Intro

Compare all that to the Radeon R9 M390X, which makes use of a 28 nm design. AMD has set the core speed at 723 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this card. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M390X should perform much faster than the Radeon R5 M330 overall. (explain)

Radeon R9 M390X		160000 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 145600 (1011%)

Texel Rate

The Radeon R9 M390X is quite a bit (more or less 349%) better at texture filtering than the Radeon R5 M330. (explain)

Radeon R9 M390X		92544 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 71944 (349%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 M390X is superior to the Radeon R5 M330, by far. (explain)

Radeon R9 M390X		23136 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 14896 (181%)

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 max amount of information (in units of megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 per second. This number is worked out by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.