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Radeon HD 3650 256MB vs Radeon R7 240

Intro

The Radeon HD 3650 256MB has a core clock speed of 725 MHz and a DDR2 memory frequency of 800 MHz. It also uses a 128-bit memory bus, and makes use of a 55 nm design. It features 120(24x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Compare all of that to the Radeon R7 240, which has a GPU core clock speed of 730 MHz, and 2048 MB of DDR3 memory set to run at 900 MHz through a 128-bit bus. It also is comprised of 320 Stream Processors, 20 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240 30 Watts
Radeon HD 3650 256MB 78 Watts
Difference: 48 Watts (160%)

Memory Bandwidth

In theory, the Radeon R7 240 should be 13% faster than the Radeon HD 3650 256MB overall, because of its higher bandwidth. (explain)

Radeon R7 240 28800 MB/sec
Radeon HD 3650 256MB 25600 MB/sec
Difference: 3200 (13%)

Texel Rate

The Radeon R7 240 should be much (more or less 152%) better at AF than the Radeon HD 3650 256MB. (explain)

Radeon R7 240 14600 Mtexels/sec
Radeon HD 3650 256MB 5800 Mtexels/sec
Difference: 8800 (152%)

Pixel Rate

The Radeon R7 240 should be quite a bit (more or less 101%) better at FSAA than the Radeon HD 3650 256MB, and also will be able to handle higher resolutions more effectively. (explain)

Radeon R7 240 5840 Mpixels/sec
Radeon HD 3650 256MB 2900 Mpixels/sec
Difference: 2940 (101%)

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 R7 240

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 256MB Radeon R7 240
Manufacturer AMD AMD
Year 2008 October 2013
Code Name RV635 PRO Oland PRO
Memory 256 MB 2048 MB
Core Speed 725 MHz 730 MHz
Memory Speed 1600 MHz 1800 MHz
Power (Max TDP) 78 watts 30 watts
Bandwidth 25600 MB/sec 28800 MB/sec
Texel Rate 5800 Mtexels/sec 14600 Mtexels/sec
Pixel Rate 2900 Mpixels/sec 5840 Mpixels/sec
Unified Shaders 120(24x5) 320
Texture Mapping Units 8 20
Render Output Units 4 8
Bus Type DDR2 DDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 28 nm
Transistors (Unknown) million 1040 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 max amount of data (counted in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock 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 number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 3650 256MB

Amazon.com

Check prices at:

Radeon R7 240

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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