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GeForce GTX 980M vs Radeon HD 3650 256MB

Intro

The GeForce GTX 980M features a clock speed of 1038 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 96 Texture Address Units, and 64 ROPs.

Compare those specs to the Radeon HD 3650 256MB, which has core clock speeds of 725 MHz on the GPU, and 800 MHz on the 256 MB of DDR2 memory. It features 120(24x5) SPUs along with 8 Texture Address Units and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB 78 Watts
GeForce GTX 980M 100 Watts
Difference: 22 Watts (28%)

Memory Bandwidth

Performance-wise, the GeForce GTX 980M should in theory be quite a bit better than the Radeon HD 3650 256MB in general. (explain)

GeForce GTX 980M 128000 MB/sec
Radeon HD 3650 256MB 25600 MB/sec
Difference: 102400 (400%)

Texel Rate

The GeForce GTX 980M should be quite a bit (about 1618%) faster with regards to anisotropic filtering than the Radeon HD 3650 256MB. (explain)

GeForce GTX 980M 99648 Mtexels/sec
Radeon HD 3650 256MB 5800 Mtexels/sec
Difference: 93848 (1618%)

Pixel Rate

The GeForce GTX 980M should be a lot (more or less 2191%) faster with regards to full screen anti-aliasing than the Radeon HD 3650 256MB, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 980M 66432 Mpixels/sec
Radeon HD 3650 256MB 2900 Mpixels/sec
Difference: 63532 (2191%)

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 GTX 980M

Amazon.com

Check prices at:

Radeon HD 3650 256MB

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 GTX 980M Radeon HD 3650 256MB
Manufacturer nVidia AMD
Year October 7 2014 2008
Code Name GM204 RV635 PRO
Memory 4096 MB 256 MB
Core Speed 1038 MHz 725 MHz
Memory Speed 4000 MHz 1600 MHz
Power (Max TDP) 100 watts 78 watts
Bandwidth 128000 MB/sec 25600 MB/sec
Texel Rate 99648 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 66432 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 1536 120(24x5)
Texture Mapping Units 96 8
Render Output Units 64 4
Bus Type GDDR5 DDR2
Bus Width 256-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: Bandwidth is the max amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 applied per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher 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 number of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 980M

Amazon.com

Check prices at:

Radeon HD 3650 256MB

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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