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Radeon RX 6950 XT vs Radeon RX Vega 64

Intro

The Radeon RX 6950 XT has a GPU core clock speed of 1925 MHz, and the 16384 MB of GDDR6 RAM runs at 2250 MHz through a 256-bit bus. It also is comprised of 5120 SPUs, 320 TAUs, and 128 ROPs.

Compare those specs to the Radeon RX Vega 64, which features a GPU core clock speed of 1247 MHz, and 8192 MB of HBM2 memory running at 1890 MHz through a 2048-bit bus. It also is comprised of 4096 SPUs, 256 TAUs, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX Vega 64 295 Watts
Radeon RX 6950 XT 335 Watts
Difference: 40 Watts (14%)

Memory Bandwidth

The Radeon RX 6950 XT should in theory perform just a bit faster than the Radeon RX Vega 64 overall. (explain)

Radeon RX 6950 XT 589824 MB/sec
Radeon RX Vega 64 495411 MB/sec
Difference: 94413 (19%)

Texel Rate

The Radeon RX 6950 XT should be quite a bit (approximately 93%) faster with regards to AF than the Radeon RX Vega 64. (explain)

Radeon RX 6950 XT 616000 Mtexels/sec
Radeon RX Vega 64 319232 Mtexels/sec
Difference: 296768 (93%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6950 XT is the winner, and very much so. (explain)

Radeon RX 6950 XT 246400 Mpixels/sec
Radeon RX Vega 64 79808 Mpixels/sec
Difference: 166592 (209%)

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

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Radeon RX 6950 XT

Amazon.com

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Radeon RX Vega 64

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon RX 6950 XT Radeon RX Vega 64
Manufacturer AMD AMD
Year May 2022 August 2017
Code Name Navi 21 Vega 10 XT
Memory 16384 MB 8192 MB
Core Speed 1925 MHz 1247 MHz
Memory Speed 2250 GB/s 1890 MHz
Power (Max TDP) 335 watts 295 watts
Bandwidth 589824 MB/sec 495411 MB/sec
Texel Rate 616000 Mtexels/sec 319232 Mtexels/sec
Pixel Rate 246400 Mpixels/sec 79808 Mpixels/sec
Unified Shaders 5120 4096
Texture Mapping Units 320 256
Render Output Units 128 64
Bus Type GDDR6 HBM2
Bus Width 256-bit 2048-bit
Fab Process 7 nm 14 nm
Transistors 26800 million 12500 million
Bus PCIe 4.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12.0
OpenGL Version OpenGL 4.6 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units of the card 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number 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 drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon RX 6950 XT

Amazon.com

Check prices at:

Radeon RX Vega 64

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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