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GeForce GTX 850M vs Radeon HD 3470 256MB

Intro

The GeForce GTX 850M comes with a GPU core speed of 876 MHz, and the 2048 MB of DDR3 RAM is set to run at 1000 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon HD 3470 256MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 800 MHz. The DDR2 memory runs at a speed of 950 MHz on this model. It features 40(8x5) SPUs as well as 4 Texture Address Units and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GTX 850M should perform a small bit faster than the Radeon HD 3470 256MB in general. (explain)

GeForce GTX 850M 32000 MB/sec
Radeon HD 3470 256MB 30400 MB/sec
Difference: 1600 (5%)

Texel Rate

The GeForce GTX 850M should be quite a bit (about 995%) faster with regards to texture filtering than the Radeon HD 3470 256MB. (explain)

GeForce GTX 850M 35040 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 31840 (995%)

Pixel Rate

The GeForce GTX 850M is much (about 338%) faster with regards to AA than the Radeon HD 3470 256MB, and also capable of handling higher resolutions more effectively. (explain)

GeForce GTX 850M 14016 Mpixels/sec
Radeon HD 3470 256MB 3200 Mpixels/sec
Difference: 10816 (338%)

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 3470 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 3470 256MB
Manufacturer nVidia AMD
Year March 12 2014 2008
Code Name GM107 RV620 PRO
Memory 2048 MB 256 MB
Core Speed 876 MHz 800 MHz
Memory Speed 2000 MHz 1900 MHz
Power (Max TDP) 40 watts (Unknown) watts
Bandwidth 32000 MB/sec 30400 MB/sec
Texel Rate 35040 Mtexels/sec 3200 Mtexels/sec
Pixel Rate 14016 Mpixels/sec 3200 Mpixels/sec
Unified Shaders 640 40(8x5)
Texture Mapping Units 40 4
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
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, 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 amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTX 850M

Amazon.com

Check prices at:

Radeon HD 3470 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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