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GeForce GTX 860M vs Radeon HD 3850 512MB

Intro

The GeForce GTX 860M features core speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1152 SPUs along with 96 Texture Address Units and 16 Rasterization Operator Units.

Compare those specs to the Radeon HD 3850 512MB, which features a core clock frequency of 668 MHz and a GDDR3 memory frequency of 828 MHz. It also features a 256-bit memory bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 16 Texture Address Units, 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 512MB 75 Watts
Difference: 30 Watts (67%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 860M is 21% quicker than the Radeon HD 3850 512MB overall, due to its higher data rate. (explain)

GeForce GTX 860M 64000 MB/sec
Radeon HD 3850 512MB 52992 MB/sec
Difference: 11008 (21%)

Texel Rate

The GeForce GTX 860M is much (about 616%) better at texture filtering than the Radeon HD 3850 512MB. (explain)

GeForce GTX 860M 76512 Mtexels/sec
Radeon HD 3850 512MB 10688 Mtexels/sec
Difference: 65824 (616%)

Pixel Rate

The GeForce GTX 860M will be a small bit (about 19%) more effective at FSAA than the Radeon HD 3850 512MB, and also able to handle higher resolutions while still performing well. (explain)

GeForce GTX 860M 12752 Mpixels/sec
Radeon HD 3850 512MB 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 512MB

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 512MB
Manufacturer nVidia AMD
Year March 12 2014 Nov 19, 2007
Code Name GM107 RV670 PRO
Memory 4096 MB 512 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 max amount of information (counted in MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 are applied per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 860M

Amazon.com

Check prices at:

Radeon HD 3850 512MB

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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