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Radeon HD 4850 X2 1GB vs Radeon RX 460

Intro

The Radeon HD 4850 X2 1GB has a clock frequency of 625 MHz and a GDDR3 memory speed of 993 MHz. It also features a 256-bit bus, and makes use of a 55 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Compare all of that to the Radeon RX 460, which makes use of a 14 nm design. AMD has set the core speed at 1090 MHz. The GDDR5 RAM is set to run at a speed of 1750 MHz on this specific card. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 75 Watts
Radeon HD 4850 X2 1GB 250 Watts
Difference: 175 Watts (233%)

Memory Bandwidth

Theoretically, the Radeon HD 4850 X2 1GB should be just a bit faster than the Radeon RX 460 overall. (explain)

Radeon HD 4850 X2 1GB 127104 MB/sec
Radeon RX 460 112000 MB/sec
Difference: 15104 (13%)

Texel Rate

The Radeon RX 460 should be quite a bit (about 22%) faster with regards to AF than the Radeon HD 4850 X2 1GB. (explain)

Radeon RX 460 61040 Mtexels/sec
Radeon HD 4850 X2 1GB 50000 Mtexels/sec
Difference: 11040 (22%)

Pixel Rate

The Radeon HD 4850 X2 1GB should be a little bit (more or less 15%) better at FSAA than the Radeon RX 460, and capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 4850 X2 1GB 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 1GB

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 1GB Radeon RX 460
Manufacturer AMD AMD
Year Nov 7, 2008 August 2016
Code Name R700 Polaris 11
Memory 1024 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 largest amount of data (counted in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour 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 also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon HD 4850 X2 1GB

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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