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Radeon HD 4890 1GB vs Radeon RX 6500 XT

Intro

The Radeon HD 4890 1GB features a core clock frequency of 1000 MHz and a GDDR5 memory speed of 975 MHz. It also features a 256-bit bus, and uses a 55 nm design. It is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Compare that to the Radeon RX 6500 XT, which makes use of a 6 nm design. AMD has set the core speed at 2200 MHz. The GDDR6 memory works at a frequency of 2250 MHz on this particular model. It features 1024 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT 107 Watts
Radeon HD 4890 1GB 190 Watts
Difference: 83 Watts (78%)

Memory Bandwidth

As far as performance goes, the Radeon RX 6500 XT should theoretically be just a bit better than the Radeon HD 4890 1GB overall. (explain)

Radeon RX 6500 XT 147456 MB/sec
Radeon HD 4890 1GB 124800 MB/sec
Difference: 22656 (18%)

Texel Rate

The Radeon RX 6500 XT will be quite a bit (approximately 252%) faster with regards to AF than the Radeon HD 4890 1GB. (explain)

Radeon RX 6500 XT 140800 Mtexels/sec
Radeon HD 4890 1GB 40000 Mtexels/sec
Difference: 100800 (252%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 6500 XT is superior to the Radeon HD 4890 1GB, by far. (explain)

Radeon RX 6500 XT 70400 Mpixels/sec
Radeon HD 4890 1GB 16000 Mpixels/sec
Difference: 54400 (340%)

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 HD 4890 1GB

Amazon.com

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Radeon RX 6500 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 HD 4890 1GB Radeon RX 6500 XT
Manufacturer AMD AMD
Year Apr 2, 2009 January 2022
Code Name RV790 XT Navi 24 XT
Memory 1024 MB 4096 MB
Core Speed 1000 MHz 2200 MHz
Memory Speed 3900 MHz 4500 GB/s
Power (Max TDP) 190 watts 107 watts
Bandwidth 124800 MB/sec 147456 MB/sec
Texel Rate 40000 Mtexels/sec 140800 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 70400 Mpixels/sec
Unified Shaders 800(160x5) 1024
Texture Mapping Units 40 64
Render Output Units 16 32
Bus Type GDDR5 GDDR6
Bus Width 256-bit 64-bit
Fab Process 55 nm 6 nm
Transistors 959 million 5400 million
Bus PCIe 2.0 x16 PCIe 4.0 x16
DirectX Version DirectX 10.1 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It's calculated 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 it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount 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 fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4890 1GB

Amazon.com

Check prices at:

Radeon RX 6500 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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