GeForce RTX 2080 vs Radeon HD 7770

Intro

Compare all of that to the Radeon HD 7770, which comes with a clock frequency of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 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

GeForce RTX 2080		26155 points
Radeon HD 7770		3180 points
	Difference: 22975 (722%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce RTX 2080		215 Watts
	Difference: 135 Watts (169%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 2080 should in theory be much better than the Radeon HD 7770 in general. (explain)

GeForce RTX 2080		458752 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 386752 (537%)

Texel Rate

The GeForce RTX 2080 should be much (approximately 597%) faster with regards to AF than the Radeon HD 7770. (explain)

GeForce RTX 2080		278760 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 238760 (597%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce RTX 2080 is a better choice, by far. (explain)

GeForce RTX 2080		96960 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 80960 (506%)

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: Bandwidth is the max amount of information (in units of MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.