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Radeon HD 3650 256MB vs Radeon R9 M270X

Intro

The Radeon HD 3650 256MB comes with a GPU clock speed of 725 MHz, and the 256 MB of DDR2 memory runs at 800 MHz through a 128-bit bus. It also is comprised of 120(24x5) Stream Processors, 8 Texture Address Units, and 4 ROPs.

Compare that to the Radeon R9 M270X, which uses a 28 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 memory runs at a frequency of 1125 MHz on this particular model. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M270X will be 181% faster than the Radeon HD 3650 256MB overall, due to its higher data rate. (explain)

Radeon R9 M270X 72000 MB/sec
Radeon HD 3650 256MB 25600 MB/sec
Difference: 46400 (181%)

Texel Rate

The Radeon R9 M270X will be much (more or less 400%) more effective at texture filtering than the Radeon HD 3650 256MB. (explain)

Radeon R9 M270X 29000 Mtexels/sec
Radeon HD 3650 256MB 5800 Mtexels/sec
Difference: 23200 (400%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M270X is superior to the Radeon HD 3650 256MB, by a large margin. (explain)

Radeon R9 M270X 11600 Mpixels/sec
Radeon HD 3650 256MB 2900 Mpixels/sec
Difference: 8700 (300%)

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 256MB

Amazon.com

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Radeon R9 M270X

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 3650 256MB Radeon R9 M270X
Manufacturer AMD AMD
Year 2008 May 1 2014
Code Name RV635 PRO Venus XT
Memory 256 MB 2048 MB
Core Speed 725 MHz 725 MHz
Memory Speed 1600 MHz 4500 MHz
Power (Max TDP) 78 watts (Unknown) watts
Bandwidth 25600 MB/sec 72000 MB/sec
Texel Rate 5800 Mtexels/sec 29000 Mtexels/sec
Pixel Rate 2900 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 120(24x5) 640
Texture Mapping Units 8 40
Render Output Units 4 16
Bus Type DDR2 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 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 3650 256MB

Amazon.com

Check prices at:

Radeon R9 M270X

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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