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GeForce GTX 860M vs Radeon HD 4850 2GB

Intro

The GeForce GTX 860M has core speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1152 SPUs as well as 96 TAUs and 16 ROPs.

Compare those specs to the Radeon HD 4850 2GB, which comes with a core clock frequency of 625 MHz and a GDDR4 memory frequency of 993 MHz. It also features a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

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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

As far as performance goes, the GeForce GTX 860M should theoretically be a small bit better than the Radeon HD 4850 2GB overall. (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 (about 206%) more effective at texture filtering 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

If using high levels of AA is important to you, then the GeForce GTX 860M is superior to the Radeon HD 4850 2GB, and very much so. (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 maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 can be processed in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

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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