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Radeon HD 3850 X2 vs Radeon RX 460 2GB

Intro

The Radeon HD 3850 X2 features a core clock frequency of 668 MHz and a GDDR3 memory frequency of 828 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It is made up of 320(64x5) SPUs, 16 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon RX 460 2GB, which features a GPU core clock speed of 1090 MHz, and 2048 MB of GDDR5 RAM set to run at 1750 MHz through a 128-bit bus. It also features 896 Stream Processors, 56 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon RX 460 2GB should theoretically be a small bit better than the Radeon HD 3850 X2 overall. (explain)

Radeon RX 460 2GB 112000 MB/sec
Radeon HD 3850 X2 105984 MB/sec
Difference: 6016 (6%)

Texel Rate

The Radeon RX 460 2GB will be a lot (about 186%) faster with regards to AF than the Radeon HD 3850 X2. (explain)

Radeon RX 460 2GB 61040 Mtexels/sec
Radeon HD 3850 X2 21376 Mtexels/sec
Difference: 39664 (186%)

Pixel Rate

The Radeon HD 3850 X2 should be much (more or less 23%) faster with regards to AA than the Radeon RX 460 2GB, and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 3850 X2 21376 Mpixels/sec
Radeon RX 460 2GB 17440 Mpixels/sec
Difference: 3936 (23%)

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 3850 X2

Amazon.com

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Radeon RX 460 2GB

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 3850 X2 Radeon RX 460 2GB
Manufacturer AMD AMD
Year Apr 4, 2008 August 2016
Code Name RV670 PRO Polaris 11
Memory 512 MB (x2) 2048 MB
Core Speed 668 MHz (x2) 1090 MHz
Memory Speed 1656 MHz (x2) 7000 MHz
Power (Max TDP) (Unknown) watts 75 watts
Bandwidth 105984 MB/sec 112000 MB/sec
Texel Rate 21376 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 21376 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 320(64x5) (x2) 896
Texture Mapping Units 16 (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 (Unknown) million 3000 million
Bus PCIe 2.0 x16/(internal PCIe 1.1 x16) PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 12.0
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should 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 are processed in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon HD 3850 X2

Amazon.com

Check prices at:

Radeon RX 460 2GB

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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