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GeForce GTX 860M vs Radeon HD 4850 2GB

Intro

The GeForce GTX 860M features core clock speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 RAM. It features 1152 SPUs along with 96 TAUs and 16 ROPs.

Compare all that to the Radeon HD 4850 2GB, which has clock speeds of 625 MHz on the GPU, and 993 MHz on the 2048 MB of GDDR4 memory. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M 45 Watts
Radeon HD 4850 2GB 110 Watts
Difference: 65 Watts (144%)

Memory Bandwidth

Performance-wise, the GeForce GTX 860M should in theory be a bit superior to the Radeon HD 4850 2GB in general. (explain)

GeForce GTX 860M 64000 MB/sec
Radeon HD 4850 2GB 63552 MB/sec
Difference: 448 (1%)

Texel Rate

The GeForce GTX 860M should be much (more or less 206%) more effective at AF than the Radeon HD 4850 2GB. (explain)

GeForce GTX 860M 76512 Mtexels/sec
Radeon HD 4850 2GB 25000 Mtexels/sec
Difference: 51512 (206%)

Pixel Rate

The GeForce GTX 860M will be a lot (about 28%) better at AA than the Radeon HD 4850 2GB, and will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 860M 12752 Mpixels/sec
Radeon HD 4850 2GB 10000 Mpixels/sec
Difference: 2752 (28%)

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 4850 2GB

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 4850 2GB
Manufacturer nVidia AMD
Year March 12 2014 Jun 25, 2008
Code Name GM107 RV770 PRO
Memory 4096 MB 2048 MB
Core Speed 797 MHz 625 MHz
Memory Speed 4000 MHz 1986 MHz
Power (Max TDP) 45 watts 110 watts
Bandwidth 64000 MB/sec 63552 MB/sec
Texel Rate 76512 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 12752 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 1152 800(160x5)
Texture Mapping Units 96 40
Render Output Units 16 16
Bus Type GDDR5 GDDR4
Bus Width 128-bit 256-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 956 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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number 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 output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 860M

Amazon.com

Check prices at:

Radeon HD 4850 2GB

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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