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GeForce GTX 850M vs Radeon HD 3650 256MB

Intro

The GeForce GTX 850M features a GPU clock speed of 876 MHz, and the 2048 MB of DDR3 memory runs at 1000 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 Texture Address Units, and 16 ROPs.

Compare those specifications to the Radeon HD 3650 256MB, which features core speeds of 725 MHz on the GPU, and 800 MHz on the 256 MB of DDR2 RAM. It features 120(24x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M 40 Watts
Radeon HD 3650 256MB 78 Watts
Difference: 38 Watts (95%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 850M should in theory be much better than the Radeon HD 3650 256MB in general. (explain)

GeForce GTX 850M 32000 MB/sec
Radeon HD 3650 256MB 25600 MB/sec
Difference: 6400 (25%)

Texel Rate

The GeForce GTX 850M is much (more or less 504%) faster with regards to AF than the Radeon HD 3650 256MB. (explain)

GeForce GTX 850M 35040 Mtexels/sec
Radeon HD 3650 256MB 5800 Mtexels/sec
Difference: 29240 (504%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 850M is the winner, by far. (explain)

GeForce GTX 850M 14016 Mpixels/sec
Radeon HD 3650 256MB 2900 Mpixels/sec
Difference: 11116 (383%)

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 850M

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 850M Radeon HD 3650 256MB
Manufacturer nVidia AMD
Year March 12 2014 2008
Code Name GM107 RV635 PRO
Memory 2048 MB 256 MB
Core Speed 876 MHz 725 MHz
Memory Speed 2000 MHz 1600 MHz
Power (Max TDP) 40 watts 78 watts
Bandwidth 32000 MB/sec 25600 MB/sec
Texel Rate 35040 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 14016 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 640 120(24x5)
Texture Mapping Units 40 8
Render Output Units 16 4
Bus Type DDR3 DDR2
Bus Width 128-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 largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. 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 quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 850M

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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