Radeon HD 7990 vs Radeon RX 6950 XT

Intro

Compare that to the Radeon RX 6950 XT, which comes with core speeds of 1925 MHz on the GPU, and 2250 MHz on the 16384 MB of GDDR6 RAM. It features 5120 SPUs as well as 320 TAUs and 128 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6950 XT		335 Watts
Radeon HD 7990		375 Watts
	Difference: 40 Watts (12%)

Memory Bandwidth

Performance-wise, the Radeon RX 6950 XT should theoretically be a bit superior to the Radeon HD 7990 overall. (explain)

Radeon RX 6950 XT		589824 MB/sec
Radeon HD 7990		576000 MB/sec
	Difference: 13824 (2%)

Texel Rate

The Radeon RX 6950 XT is a lot (approximately 153%) more effective at AF than the Radeon HD 7990. (explain)

Radeon RX 6950 XT		616000 Mtexels/sec
Radeon HD 7990		243200 Mtexels/sec
	Difference: 372800 (153%)

Pixel Rate

The Radeon RX 6950 XT is a lot (approximately 305%) faster with regards to full screen anti-aliasing than the Radeon HD 7990, and should be capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 6950 XT		246400 Mpixels/sec
Radeon HD 7990		60800 Mpixels/sec
	Difference: 185600 (305%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the 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 maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.