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GeForce GTX 860M vs Radeon HD 3850 256MB

Intro

The GeForce GTX 860M features a clock speed of 797 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is comprised of 1152 SPUs, 96 Texture Address Units, and 16 ROPs.

Compare those specifications to the Radeon HD 3850 256MB, which uses a 55 nm design. AMD has clocked the core speed at 668 MHz. The GDDR3 RAM runs at a frequency of 828 MHz on this card. It features 320(64x5) SPUs as well as 16 TAUs and 16 Rasterization Operator Units.

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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

Theoretically, the GeForce GTX 860M should be much faster than the Radeon HD 3850 256MB overall. (explain)

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

Texel Rate

The GeForce GTX 860M will be a lot (about 616%) faster with regards to AF 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 little bit (about 19%) more effective at full screen anti-aliasing than the Radeon HD 3850 256MB, and will be able to handle higher resolutions without losing too much performance. (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 megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core 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 rate also depends on quite a few 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

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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