Radeon HD 7770 vs Radeon RX 6950 XT

Intro

Compare those specs to the Radeon RX 6950 XT, which comes with a core clock speed of 1925 MHz and a GDDR6 memory speed of 2250 MHz. It also features a 256-bit bus, and makes use of a 7 nm design. It is comprised of 5120 SPUs, 320 TAUs, and 128 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon RX 6950 XT		335 Watts
	Difference: 255 Watts (319%)

Memory Bandwidth

Theoretically, the Radeon RX 6950 XT should perform quite a bit faster than the Radeon HD 7770 in general. (explain)

Radeon RX 6950 XT		589824 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 517824 (719%)

Texel Rate

The Radeon RX 6950 XT is quite a bit (about 1440%) better at anisotropic filtering than the Radeon HD 7770. (explain)

Radeon RX 6950 XT		616000 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 576000 (1440%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6950 XT is a better choice, and very much so. (explain)

Radeon RX 6950 XT		246400 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 230400 (1440%)

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 largest amount of data (in units of MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.