Radeon R9 285 vs Radeon RX Vega 64

Intro

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

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX Vega 64		21986 points
Radeon R9 285		8500 points
	Difference: 13486 (159%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 285		190 Watts
Radeon RX Vega 64		295 Watts
	Difference: 105 Watts (55%)

Memory Bandwidth

In theory, the Radeon RX Vega 64 will be 181% quicker than the Radeon R9 285 in general, due to its greater bandwidth. (explain)

Radeon RX Vega 64		495411 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 319411 (181%)

Texel Rate

The Radeon RX Vega 64 should be a lot (approximately 210%) faster with regards to AF than the Radeon R9 285. (explain)

Radeon RX Vega 64		319232 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 216416 (210%)

Pixel Rate

The Radeon RX Vega 64 should be quite a bit (more or less 172%) better at AA than the Radeon R9 285, and should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX Vega 64		79808 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 50432 (172%)

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 data (measured in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.