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GeForce GTX 880M vs Radeon HD 4850 2GB

Intro

The GeForce GTX 880M features a core clock speed of 954 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 128 TAUs, and 32 Raster Operation Units.

Compare those specs to the Radeon HD 4850 2GB, which makes use of a 55 nm design. AMD has clocked the core frequency at 625 MHz. The GDDR4 memory is set to run at a speed of 993 MHz on this particular card. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 2GB 110 Watts
GeForce GTX 880M 130 Watts
Difference: 20 Watts (18%)

Memory Bandwidth

In theory, the GeForce GTX 880M should be a lot faster than the Radeon HD 4850 2GB in general. (explain)

GeForce GTX 880M 128000 MB/sec
Radeon HD 4850 2GB 63552 MB/sec
Difference: 64448 (101%)

Texel Rate

The GeForce GTX 880M should be a lot (more or less 388%) faster with regards to anisotropic filtering than the Radeon HD 4850 2GB. (explain)

GeForce GTX 880M 122112 Mtexels/sec
Radeon HD 4850 2GB 25000 Mtexels/sec
Difference: 97112 (388%)

Pixel Rate

The GeForce GTX 880M should be much (more or less 205%) more effective at AA than the Radeon HD 4850 2GB, and should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 880M 30528 Mpixels/sec
Radeon HD 4850 2GB 10000 Mpixels/sec
Difference: 20528 (205%)

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 880M

Amazon.com

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Radeon HD 4850 2GB

Amazon.com

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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 880M Radeon HD 4850 2GB
Manufacturer nVidia AMD
Year March 12 2014 Jun 25, 2008
Code Name GK104 RV770 PRO
Memory 4096 MB 2048 MB
Core Speed 954 MHz 625 MHz
Memory Speed 4000 MHz 1986 MHz
Power (Max TDP) 130 watts 110 watts
Bandwidth 128000 MB/sec 63552 MB/sec
Texel Rate 122112 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 30528 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 1536 800(160x5)
Texture Mapping Units 128 40
Render Output Units 32 16
Bus Type GDDR5 GDDR4
Bus Width 256-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: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially 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 880M

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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