Radeon R9 M385X vs Radeon RX Vega 64

Intro

Compare that to the Radeon RX Vega 64, which comes with a core clock speed of 1247 MHz and a HBM2 memory frequency of 1890 MHz. It also makes use of a 2048-bit bus, and uses a 14 nm design. It is comprised of 4096 SPUs, 256 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX Vega 64 should theoretically be much faster than the Radeon R9 M385X overall. (explain)

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

Texel Rate

The Radeon RX Vega 64 is quite a bit (approximately 418%) more effective at texture 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 should be much (more or less 353%) more effective at FSAA than the Radeon R9 M385X, and also should be able to handle higher resolutions better. (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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, the result should 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.