Radeon HD 7870 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 clocked the core frequency at 1247 MHz. The HBM2 RAM works at a frequency of 1890 MHz on this model. It features 4096 SPUs along with 256 Texture Address Units 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 7870		6230 points
	Difference: 15756 (253%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870		175 Watts
Radeon RX Vega 64		295 Watts
	Difference: 120 Watts (69%)

Memory Bandwidth

In theory, the Radeon RX Vega 64 will be 223% faster than the Radeon HD 7870 in general, because of its higher data rate. (explain)

Radeon RX Vega 64		495411 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 341811 (223%)

Texel Rate

The Radeon RX Vega 64 should be a lot (more or less 299%) more effective at anisotropic filtering than the Radeon HD 7870. (explain)

Radeon RX Vega 64		319232 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 239232 (299%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX Vega 64 is a better choice, by a large margin. (explain)

Radeon RX Vega 64		79808 Mpixels/sec
Radeon HD 7870		32000 Mpixels/sec
	Difference: 47808 (149%)

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 data (measured in megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling 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 can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.