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GeForce GTX 980M vs Radeon HD 3650 256MB

Intro

The GeForce GTX 980M has a GPU core speed of 1038 MHz, and the 4096 MB of GDDR5 RAM runs at 1000 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 96 TAUs, and 64 ROPs.

Compare that to the Radeon HD 3650 256MB, which features a core clock speed of 725 MHz and a DDR2 memory speed of 800 MHz. It also makes use of a 128-bit memory bus, and uses a 55 nm design. It features 120(24x5) SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

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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

Theoretically, the GeForce GTX 980M should be much faster 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 will be a lot (approximately 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 quite a bit (approximately 2191%) better at AA than the Radeon HD 3650 256MB, and also should be capable of handling higher resolutions more effectively. (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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock 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 also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

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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