Radeon HD 7850 vs Radeon RX Vega 64

Intro

Compare all of that to the Radeon RX Vega 64, which makes use of a 14 nm design. AMD has set the core frequency at 1247 MHz. The HBM2 RAM is set to run at a frequency of 1890 MHz on this model. It features 4096 SPUs along with 256 TAUs and 64 ROPs.

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 HD 7850		5200 points
	Difference: 16786 (323%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Radeon RX Vega 64		295 Watts
	Difference: 165 Watts (127%)

Memory Bandwidth

In theory, the Radeon RX Vega 64 should perform quite a bit faster than the Radeon HD 7850 in general. (explain)

Radeon RX Vega 64		495411 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 341811 (223%)

Texel Rate

The Radeon RX Vega 64 is much (about 480%) better at anisotropic filtering than the Radeon HD 7850. (explain)

Radeon RX Vega 64		319232 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 264192 (480%)

Pixel Rate

The Radeon RX Vega 64 is a lot (about 190%) faster with regards to AA than the Radeon HD 7850, and also will be able to handle higher screen resolutions while still performing well. (explain)

Radeon RX Vega 64		79808 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 52288 (190%)

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 (in units of megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 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 processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.