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Radeon R9 295X2 vs Radeon RX 6900 XT

Intro

The Radeon R9 295X2 has core speeds of 1018 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2816 SPUs as well as 176 TAUs and 64 ROPs.

Compare that to the Radeon RX 6900 XT, which comes with a core clock speed of 1825 MHz and a GDDR6 memory speed of 2000 MHz. It also features a 256-bit memory bus, and uses a 7 nm design. It features 5120 SPUs, 320 TAUs, and 128 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6900 XT 300 Watts
Radeon R9 295X2 500 Watts
Difference: 200 Watts (67%)

Memory Bandwidth

The Radeon R9 295X2 should in theory be a lot faster than the Radeon RX 6900 XT overall. (explain)

Radeon R9 295X2 640000 MB/sec
Radeon RX 6900 XT 524288 MB/sec
Difference: 115712 (22%)

Texel Rate

The Radeon RX 6900 XT is much (about 63%) faster with regards to AF than the Radeon R9 295X2. (explain)

Radeon RX 6900 XT 584000 Mtexels/sec
Radeon R9 295X2 358336 Mtexels/sec
Difference: 225664 (63%)

Pixel Rate

The Radeon RX 6900 XT will be a lot (about 79%) better at anti-aliasing than the Radeon R9 295X2, and should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon RX 6900 XT 233600 Mpixels/sec
Radeon R9 295X2 130304 Mpixels/sec
Difference: 103296 (79%)

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

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Radeon R9 295X2

Amazon.com

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Radeon RX 6900 XT

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 R9 295X2 Radeon RX 6900 XT
Manufacturer AMD AMD
Year April 2014 2020
Code Name Vesuvius Navi 21
Memory 4096 MB (x2) 16384 MB
Core Speed 1018 MHz (x2) 1825 MHz
Memory Speed 5000 MHz (x2) 4000 GB/s
Power (Max TDP) 500 watts 300 watts
Bandwidth 640000 MB/sec 524288 MB/sec
Texel Rate 358336 Mtexels/sec 584000 Mtexels/sec
Pixel Rate 130304 Mpixels/sec 233600 Mpixels/sec
Unified Shaders 2816 (x2) 5120
Texture Mapping Units 176 (x2) 320
Render Output Units 64 (x2) 128
Bus Type GDDR5 GDDR6
Bus Width 512-bit (x2) 256-bit
Fab Process 28 nm 7 nm
Transistors 6200 million 26800 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 11.2 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, 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 chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon R9 295X2

Amazon.com

Check prices at:

Radeon RX 6900 XT

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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