Radeon R9 M395X vs Radeon RX Vega 64

Intro

Compare all of that to the Radeon RX Vega 64, which features a GPU core clock speed of 1247 MHz, and 8192 MB of HBM2 RAM set to run at 1890 MHz through a 2048-bit bus. It also is comprised of 4096 SPUs, 256 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
Radeon RX Vega 64		295 Watts
	Difference: 170 Watts (136%)

Memory Bandwidth

The Radeon RX Vega 64 should theoretically be a lot faster than the Radeon R9 M395X in general. (explain)

Radeon RX Vega 64		495411 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 335411 (210%)

Texel Rate

The Radeon RX Vega 64 should be much (about 245%) faster with regards to AF than the Radeon R9 M395X. (explain)

Radeon RX Vega 64		319232 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 226688 (245%)

Pixel Rate

The Radeon RX Vega 64 should be much (more or less 245%) more effective at AA than the Radeon R9 M395X, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX Vega 64		79808 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 56672 (245%)

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 moved past the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.