Radeon HD 7770 vs Radeon RX Vega 64

Intro

Compare those specs to the Radeon RX Vega 64, which uses a 14 nm design. AMD has clocked the core speed at 1247 MHz. The HBM2 memory runs at a frequency of 1890 MHz on this specific model. It features 4096 SPUs as well as 256 Texture Address Units and 64 ROPs.

Display Graphs

Hide Graphs

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 7770		3180 points
	Difference: 18806 (591%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon RX Vega 64		295 Watts
	Difference: 215 Watts (269%)

Memory Bandwidth

Theoretically, the Radeon RX Vega 64 should be quite a bit faster than the Radeon HD 7770 in general. (explain)

Radeon RX Vega 64		495411 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 423411 (588%)

Texel Rate

The Radeon RX Vega 64 will be much (approximately 698%) faster with regards to anisotropic filtering than the Radeon HD 7770. (explain)

Radeon RX Vega 64		319232 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 279232 (698%)

Pixel Rate

The Radeon RX Vega 64 should be much (approximately 399%) better at full screen anti-aliasing than the Radeon HD 7770, and also should be able to handle higher resolutions better. (explain)

Radeon RX Vega 64		79808 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 63808 (399%)

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 largest amount of information (measured in MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must 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 per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.