GeForce RTX 2070 Super vs Radeon HD 7770

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce RTX 2070 Super		215 Watts
	Difference: 135 Watts (169%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 2070 Super should theoretically be quite a bit better than the Radeon HD 7770 in general. (explain)

GeForce RTX 2070 Super		458752 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 386752 (537%)

Texel Rate

The GeForce RTX 2070 Super is much (more or less 542%) better at texture filtering than the Radeon HD 7770. (explain)

GeForce RTX 2070 Super		256800 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 216800 (542%)

Pixel Rate

The GeForce RTX 2070 Super should be much (more or less 542%) faster with regards to anti-aliasing than the Radeon HD 7770, and will be able to handle higher screen resolutions better. (explain)

GeForce RTX 2070 Super		102720 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 86720 (542%)

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 (counted in megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR memory, it must 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics 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 number of pixels the video card can 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 Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.