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GeForce GTX 860M vs Radeon HD 3850 256MB

Intro

The GeForce GTX 860M comes with a core clock speed of 797 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is comprised of 1152 SPUs, 96 TAUs, and 16 ROPs.

Compare that to the Radeon HD 3850 256MB, which comes with a GPU core clock speed of 668 MHz, and 256 MB of GDDR3 RAM running at 828 MHz through a 256-bit bus. It also is comprised of 320(64x5) Stream Processors, 16 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M 45 Watts
Radeon HD 3850 256MB 75 Watts
Difference: 30 Watts (67%)

Memory Bandwidth

The GeForce GTX 860M should in theory be much faster than the Radeon HD 3850 256MB in general. (explain)

GeForce GTX 860M 64000 MB/sec
Radeon HD 3850 256MB 52992 MB/sec
Difference: 11008 (21%)

Texel Rate

The GeForce GTX 860M should be quite a bit (approximately 616%) faster with regards to anisotropic filtering than the Radeon HD 3850 256MB. (explain)

GeForce GTX 860M 76512 Mtexels/sec
Radeon HD 3850 256MB 10688 Mtexels/sec
Difference: 65824 (616%)

Pixel Rate

The GeForce GTX 860M is a bit (more or less 19%) better at AA than the Radeon HD 3850 256MB, and should be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 860M 12752 Mpixels/sec
Radeon HD 3850 256MB 10688 Mpixels/sec
Difference: 2064 (19%)

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 860M

Amazon.com

Check prices at:

Radeon HD 3850 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 860M Radeon HD 3850 256MB
Manufacturer nVidia AMD
Year March 12 2014 Nov 19, 2007
Code Name GM107 RV670 PRO
Memory 4096 MB 256 MB
Core Speed 797 MHz 668 MHz
Memory Speed 4000 MHz 1656 MHz
Power (Max TDP) 45 watts 75 watts
Bandwidth 64000 MB/sec 52992 MB/sec
Texel Rate 76512 Mtexels/sec 10688 Mtexels/sec
Pixel Rate 12752 Mpixels/sec 10688 Mpixels/sec
Unified Shaders 1152 320(64x5)
Texture Mapping Units 96 16
Render Output Units 16 16
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-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 largest amount of information (counted in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can 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 colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 860M

Amazon.com

Check prices at:

Radeon HD 3850 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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