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GeForce GTX 860M vs Radeon HD 4850 512MB

Intro

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

Compare all that to the Radeon HD 4850 512MB, which uses a 55 nm design. AMD has set the core speed at 625 MHz. The GDDR3 RAM works at a speed of 993 MHz on this particular model. It features 800(160x5) SPUs along with 40 TAUs 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 512MB 110 Watts
Difference: 65 Watts (144%)

Memory Bandwidth

The GeForce GTX 860M should theoretically be a little bit faster than the Radeon HD 4850 512MB overall. (explain)

GeForce GTX 860M 64000 MB/sec
Radeon HD 4850 512MB 63552 MB/sec
Difference: 448 (1%)

Texel Rate

The GeForce GTX 860M should be quite a bit (more or less 206%) faster with regards to AF than the Radeon HD 4850 512MB. (explain)

GeForce GTX 860M 76512 Mtexels/sec
Radeon HD 4850 512MB 25000 Mtexels/sec
Difference: 51512 (206%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 860M is the winner, and very much so. (explain)

GeForce GTX 860M 12752 Mpixels/sec
Radeon HD 4850 512MB 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 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 4850 512MB
Manufacturer nVidia AMD
Year March 12 2014 Jun 25, 2008
Code Name GM107 RV770 PRO
Memory 4096 MB 512 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 GDDR3
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 maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

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

Display Prices

Hide Prices

GeForce GTX 860M

Amazon.com

Check prices at:

Radeon HD 4850 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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