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Radeon R9 285 vs Radeon RX 6750 XT

Intro

The Radeon R9 285 comes with a clock speed of 918 MHz and a GDDR5 memory frequency of 1375 MHz. It also uses a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.

Compare those specifications to the Radeon RX 6750 XT, which features a clock speed of 2150 MHz and a GDDR6 memory frequency of 2250 MHz. It also features a 192-bit memory bus, and uses a 7 nm design. It is made up of 2560 SPUs, 160 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 285 190 Watts
Radeon RX 6750 XT 250 Watts
Difference: 60 Watts (32%)

Memory Bandwidth

The Radeon RX 6750 XT should theoretically be a lot faster than the Radeon R9 285 in general. (explain)

Radeon RX 6750 XT 442368 MB/sec
Radeon R9 285 176000 MB/sec
Difference: 266368 (151%)

Texel Rate

The Radeon RX 6750 XT will be much (more or less 235%) more effective at anisotropic filtering than the Radeon R9 285. (explain)

Radeon RX 6750 XT 344000 Mtexels/sec
Radeon R9 285 102816 Mtexels/sec
Difference: 241184 (235%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 6750 XT is superior to the Radeon R9 285, and very much so. (explain)

Radeon RX 6750 XT 137600 Mpixels/sec
Radeon R9 285 29376 Mpixels/sec
Difference: 108224 (368%)

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 R9 285

Amazon.com

Check prices at:

Radeon RX 6750 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.

Specifications

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Model Radeon R9 285 Radeon RX 6750 XT
Manufacturer AMD AMD
Year September 2014 March 2022
Code Name Tonga PRO Navi 22
Memory 2048 MB 12288 MB
Core Speed 918 MHz 2150 MHz
Memory Speed 5500 MHz 4500 GB/s
Power (Max TDP) 190 watts 250 watts
Bandwidth 176000 MB/sec 442368 MB/sec
Texel Rate 102816 Mtexels/sec 344000 Mtexels/sec
Pixel Rate 29376 Mpixels/sec 137600 Mpixels/sec
Unified Shaders 1792 2560
Texture Mapping Units 112 160
Render Output Units 32 64
Bus Type GDDR5 GDDR6
Bus Width 256-bit 192-bit
Fab Process 28 nm 7 nm
Transistors 5000 million 17200 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 12.0 DirectX 12
OpenGL Version OpenGL 4.4 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock 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 number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon R9 285

Amazon.com

Check prices at:

Radeon RX 6750 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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