Radeon R9 M385X vs Radeon RX Vega 64

Intro

Compare those specifications to the Radeon RX Vega 64, which comes with core clock speeds of 1247 MHz on the GPU, and 1890 MHz on the 8192 MB of HBM2 RAM. It features 4096 SPUs along with 256 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon RX Vega 64 should be 416% quicker than the Radeon R9 M385X overall, because of its greater data rate. (explain)

Radeon RX Vega 64		495411 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 399411 (416%)

Texel Rate

The Radeon RX Vega 64 should be quite a bit (approximately 418%) more effective at anisotropic filtering than the Radeon R9 M385X. (explain)

Radeon RX Vega 64		319232 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 257632 (418%)

Pixel Rate

The Radeon RX Vega 64 is a lot (about 353%) faster with regards to anti-aliasing than the Radeon R9 M385X, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX Vega 64		79808 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 62208 (353%)

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 max amount of information (counted in megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the 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 number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.