Radeon HD 7870 vs Radeon RX Vega 64

Intro

Compare all 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 runs at a speed of 1890 MHz on this specific card. 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

Theoretically speaking, the Radeon RX Vega 64 should be a lot faster than the Radeon HD 7870 overall. (explain)

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

Texel Rate

The Radeon RX Vega 64 will be much (more or less 299%) better at AF than the Radeon HD 7870. (explain)

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

Pixel Rate

The Radeon RX Vega 64 is a lot (more or less 149%) faster with regards to AA than the Radeon HD 7870, and should be able to handle higher resolutions without losing too much performance. (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 information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR 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 number 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 maximum amount of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.