Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce GTX 850M vs Radeon HD 4870 2GB

Intro

The GeForce GTX 850M makes use of a 28 nm design. nVidia has clocked the core speed at 876 MHz. The DDR3 memory runs at a speed of 1000 MHz on this specific model. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Compare those specifications to the Radeon HD 4870 2GB, which makes use of a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 RAM works at a speed of 900 MHz on this particular model. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M 40 Watts
Radeon HD 4870 2GB 150 Watts
Difference: 110 Watts (275%)

Memory Bandwidth

The Radeon HD 4870 2GB, in theory, should be much faster than the GeForce GTX 850M in general. (explain)

Radeon HD 4870 2GB 115200 MB/sec
GeForce GTX 850M 32000 MB/sec
Difference: 83200 (260%)

Texel Rate

The GeForce GTX 850M should be just a bit (about 17%) more effective at anisotropic filtering than the Radeon HD 4870 2GB. (explain)

GeForce GTX 850M 35040 Mtexels/sec
Radeon HD 4870 2GB 30000 Mtexels/sec
Difference: 5040 (17%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 850M is a better choice, though only just barely. (explain)

GeForce GTX 850M 14016 Mpixels/sec
Radeon HD 4870 2GB 12000 Mpixels/sec
Difference: 2016 (17%)

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

Display Prices

Hide Prices

GeForce GTX 850M

Amazon.com

Check prices at:

Radeon HD 4870 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

Display Specifications

Hide Specifications

Model GeForce GTX 850M Radeon HD 4870 2GB
Manufacturer nVidia AMD
Year March 12 2014 Jun 25, 2008
Code Name GM107 RV770 XT
Memory 2048 MB 2048 MB
Core Speed 876 MHz 750 MHz
Memory Speed 2000 MHz 3600 MHz
Power (Max TDP) 40 watts 150 watts
Bandwidth 32000 MB/sec 115200 MB/sec
Texel Rate 35040 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 14016 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 640 800(160x5)
Texture Mapping Units 40 40
Render Output Units 16 16
Bus Type DDR3 GDDR5
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: Bandwidth is the max amount of information (counted in megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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 reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 850M

Amazon.com

Check prices at:

Radeon HD 4870 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.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti Spam by WP-SpamShield