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Radeon HD 4850 2GB vs Radeon R9 M395X

Intro

The Radeon HD 4850 2GB comes with core speeds of 625 MHz on the GPU, and 993 MHz on the 2048 MB of GDDR4 memory. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Compare all that to the Radeon R9 M395X, which uses a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this card. It features 2048 SPUs along with 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 R9 M395X 125 Watts
Difference: 15 Watts (14%)

Memory Bandwidth

In theory, the Radeon R9 M395X should perform much faster than the Radeon HD 4850 2GB in general. (explain)

Radeon R9 M395X 160000 MB/sec
Radeon HD 4850 2GB 63552 MB/sec
Difference: 96448 (152%)

Texel Rate

The Radeon R9 M395X should be quite a bit (approximately 270%) more effective at texture filtering than the Radeon HD 4850 2GB. (explain)

Radeon R9 M395X 92544 Mtexels/sec
Radeon HD 4850 2GB 25000 Mtexels/sec
Difference: 67544 (270%)

Pixel Rate

The Radeon R9 M395X is quite a bit (more or less 131%) more effective at full screen anti-aliasing than the Radeon HD 4850 2GB, and should be able to handle higher resolutions better. (explain)

Radeon R9 M395X 23136 Mpixels/sec
Radeon HD 4850 2GB 10000 Mpixels/sec
Difference: 13136 (131%)

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 R9 M395X

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 R9 M395X
Manufacturer AMD AMD
Year Jun 25, 2008 2015
Code Name RV770 PRO Tonga
Memory 2048 MB 4096 MB
Core Speed 625 MHz 723 MHz
Memory Speed 1986 MHz 5000 MHz
Power (Max TDP) 110 watts 125 watts
Bandwidth 63552 MB/sec 160000 MB/sec
Texel Rate 25000 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 10000 Mpixels/sec 23136 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 28 nm
Transistors 956 million (Unknown) million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the clock 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 rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 4850 2GB

Amazon.com

Check prices at:

Radeon R9 M395X

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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