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Radeon HD 3650 512MB vs Radeon R9 M385X

Intro

The Radeon HD 3650 512MB uses a 55 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR3 memory works at a speed of 800 MHz on this specific card. It features 120(24x5) SPUs along with 8 TAUs and 4 ROPs.

Compare that to the Radeon R9 M385X, which has a clock frequency of 1100 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 896 SPUs, 56 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M385X should be 275% quicker than the Radeon HD 3650 512MB overall, due to its higher bandwidth. (explain)

Radeon R9 M385X 96000 MB/sec
Radeon HD 3650 512MB 25600 MB/sec
Difference: 70400 (275%)

Texel Rate

The Radeon R9 M385X should be much (more or less 962%) more effective at anisotropic filtering than the Radeon HD 3650 512MB. (explain)

Radeon R9 M385X 61600 Mtexels/sec
Radeon HD 3650 512MB 5800 Mtexels/sec
Difference: 55800 (962%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M385X is the winner, and very much so. (explain)

Radeon R9 M385X 17600 Mpixels/sec
Radeon HD 3650 512MB 2900 Mpixels/sec
Difference: 14700 (507%)

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 3650 512MB

Amazon.com

Check prices at:

Radeon R9 M385X

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 3650 512MB Radeon R9 M385X
Manufacturer AMD AMD
Year 2008 2015
Code Name RV635 PRO Bonaire
Memory 512 MB 4096 MB
Core Speed 725 MHz 1100 MHz
Memory Speed 1600 MHz 6000 MHz
Power (Max TDP) 78 watts (Unknown) watts
Bandwidth 25600 MB/sec 96000 MB/sec
Texel Rate 5800 Mtexels/sec 61600 Mtexels/sec
Pixel Rate 2900 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 120(24x5) 896
Texture Mapping Units 8 56
Render Output Units 4 16
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 55 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 2.0 x16/AGP 8x 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 (in units of megabytes per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon HD 3650 512MB

Amazon.com

Check prices at:

Radeon R9 M385X

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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