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GeForce 940M vs Radeon HD 3650 512MB

Intro

The GeForce 940M comes with a core clock frequency of 1072 MHz and a DDR3 memory frequency of 1000 MHz. It also makes use of a 64-bit memory bus, and makes use of a 28 nm design. It is comprised of 384 SPUs, 24 TAUs, and 8 Raster Operation Units.

Compare that to the Radeon HD 3650 512MB, which features core speeds of 725 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 120(24x5) SPUs along with 8 TAUs and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 3650 512MB should theoretically be much superior to the GeForce 940M in general. (explain)

Radeon HD 3650 512MB 25600 MB/sec
GeForce 940M 16000 MB/sec
Difference: 9600 (60%)

Texel Rate

The GeForce 940M will be much (approximately 344%) faster with regards to anisotropic filtering than the Radeon HD 3650 512MB. (explain)

GeForce 940M 25728 Mtexels/sec
Radeon HD 3650 512MB 5800 Mtexels/sec
Difference: 19928 (344%)

Pixel Rate

The GeForce 940M will be a lot (more or less 196%) faster with regards to FSAA than the Radeon HD 3650 512MB, and also will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce 940M 8576 Mpixels/sec
Radeon HD 3650 512MB 2900 Mpixels/sec
Difference: 5676 (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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GeForce 940M

Amazon.com

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Radeon HD 3650 512MB

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 GeForce 940M Radeon HD 3650 512MB
Manufacturer nVidia AMD
Year March 12 2015 2008
Code Name GM108 RV635 PRO
Memory 2048 MB 512 MB
Core Speed 1072 MHz 725 MHz
Memory Speed 2000 MHz 1600 MHz
Power (Max TDP) (Unknown) watts 78 watts
Bandwidth 16000 MB/sec 25600 MB/sec
Texel Rate 25728 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 8576 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 384 120(24x5)
Texture Mapping Units 24 8
Render Output Units 8 4
Bus Type DDR3 GDDR3
Bus Width 64-bit 128-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum 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 higher this number, the better the 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 maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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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GeForce 940M

Amazon.com

Check prices at:

Radeon HD 3650 512MB

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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