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Radeon HD 4850 X2 512MB vs Radeon RX 460

Intro

The Radeon HD 4850 X2 512MB has a GPU core speed of 625 MHz, and the 512 MB of GDDR3 RAM is set to run at 993 MHz through a 256-bit bus. It also is made up of 800(160x5) Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Compare those specifications to the Radeon RX 460, which comes with a core clock frequency of 1090 MHz and a GDDR5 memory speed of 1750 MHz. It also features a 128-bit memory bus, and makes use of a 14 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 75 Watts
Radeon HD 4850 X2 512MB 250 Watts
Difference: 175 Watts (233%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4850 X2 512MB should perform just a bit faster than the Radeon RX 460 in general. (explain)

Radeon HD 4850 X2 512MB 127104 MB/sec
Radeon RX 460 112000 MB/sec
Difference: 15104 (13%)

Texel Rate

The Radeon RX 460 should be a lot (about 22%) faster with regards to anisotropic filtering than the Radeon HD 4850 X2 512MB. (explain)

Radeon RX 460 61040 Mtexels/sec
Radeon HD 4850 X2 512MB 50000 Mtexels/sec
Difference: 11040 (22%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 4850 X2 512MB is the winner, but it probably won't make a huge difference. (explain)

Radeon HD 4850 X2 512MB 20000 Mpixels/sec
Radeon RX 460 17440 Mpixels/sec
Difference: 2560 (15%)

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 HD 4850 X2 512MB

Amazon.com

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Radeon RX 460

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 HD 4850 X2 512MB Radeon RX 460
Manufacturer AMD AMD
Year Nov 7, 2008 August 2016
Code Name R700 Polaris 11
Memory 512 MB (x2) 4096 MB
Core Speed 625 MHz (x2) 1090 MHz
Memory Speed 1986 MHz (x2) 7000 MHz
Power (Max TDP) 250 watts 75 watts
Bandwidth 127104 MB/sec 112000 MB/sec
Texel Rate 50000 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 20000 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 800(160x5) (x2) 896
Texture Mapping Units 40 (x2) 56
Render Output Units 16 (x2) 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 128-bit
Fab Process 55 nm 14 nm
Transistors 956 million 3000 million
Bus PCIe 2.0 x16 (PCIe bridge) PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 12.0
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at 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 video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Radeon HD 4850 X2 512MB

Amazon.com

Check prices at:

Radeon RX 460

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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