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Radeon HD 4850 2GB vs Radeon RX 470

Intro

The Radeon HD 4850 2GB features a core clock frequency of 625 MHz and a GDDR4 memory speed of 993 MHz. It also uses a 256-bit memory bus, and makes use of a 55 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Compare those specifications to the Radeon RX 470, which has core speeds of 926 MHz on the GPU, and 1650 MHz on the 8192 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 2GB 110 Watts
Radeon RX 470 120 Watts
Difference: 10 Watts (9%)

Memory Bandwidth

The Radeon RX 470, in theory, should perform quite a bit faster than the Radeon HD 4850 2GB in general. (explain)

Radeon RX 470 211200 MB/sec
Radeon HD 4850 2GB 63552 MB/sec
Difference: 147648 (232%)

Texel Rate

The Radeon RX 470 is much (about 374%) better at anisotropic filtering than the Radeon HD 4850 2GB. (explain)

Radeon RX 470 118528 Mtexels/sec
Radeon HD 4850 2GB 25000 Mtexels/sec
Difference: 93528 (374%)

Pixel Rate

The Radeon RX 470 is a lot (more or less 196%) better at FSAA than the Radeon HD 4850 2GB, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX 470 29632 Mpixels/sec
Radeon HD 4850 2GB 10000 Mpixels/sec
Difference: 19632 (196%)

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 4850 2GB

Amazon.com

Check prices at:

Radeon RX 470

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 4850 2GB Radeon RX 470
Manufacturer AMD AMD
Year Jun 25, 2008 August 2016
Code Name RV770 PRO Polaris 10
Memory 2048 MB 8192 MB
Core Speed 625 MHz 926 MHz
Memory Speed 1986 MHz 6600 MHz
Power (Max TDP) 110 watts 120 watts
Bandwidth 63552 MB/sec 211200 MB/sec
Texel Rate 25000 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 10000 Mpixels/sec 29632 Mpixels/sec
Unified Shaders 800(160x5) 2048
Texture Mapping Units 40 128
Render Output Units 16 32
Bus Type GDDR4 GDDR5
Bus Width 256-bit 256-bit
Fab Process 55 nm 14 nm
Transistors 956 million 5700 million
Bus PCIe 2.0 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 maximum amount of data (counted in megabytes per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 in one second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the 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 graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core 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 quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 4850 2GB

Amazon.com

Check prices at:

Radeon RX 470

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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