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GeForce 830M vs Radeon R5 M255

Intro

The GeForce 830M features a clock frequency of 1029 MHz and a DDR3 memory frequency of 900 MHz. It also features a 64-bit bus, and makes use of a 28 nm design. It is comprised of 256 SPUs, 16 TAUs, and 8 Raster Operation Units.

Compare all of that to the Radeon R5 M255, which comes with a core clock speed of 940 MHz and a DDR3 memory speed of 1000 MHz. It also makes use of a 64-bit bus, and uses a 28 nm design. It features 320 SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R5 M255 should perform a small bit faster than the GeForce 830M in general. (explain)

Radeon R5 M255 16000 MB/sec
GeForce 830M 14400 MB/sec
Difference: 1600 (11%)

Texel Rate

The Radeon R5 M255 will be just a bit (about 14%) faster with regards to anisotropic filtering than the GeForce 830M. (explain)

Radeon R5 M255 18800 Mtexels/sec
GeForce 830M 16464 Mtexels/sec
Difference: 2336 (14%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce 830M is a better choice, though not by far. (explain)

GeForce 830M 8232 Mpixels/sec
Radeon R5 M255 7520 Mpixels/sec
Difference: 712 (9%)

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 830M

Amazon.com

Check prices at:

Radeon R5 M255

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 830M Radeon R5 M255
Manufacturer nVidia AMD
Year March 12 2014 June 2014
Code Name GM108 Jet Pro
Memory 2048 MB 2048 MB
Core Speed 1029 MHz 940 MHz
Memory Speed 1800 MHz 2000 MHz
Power (Max TDP) 25 watts (Unknown) watts
Bandwidth 14400 MB/sec 16000 MB/sec
Texel Rate 16464 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 8232 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 256 320
Texture Mapping Units 16 20
Render Output Units 8 8
Bus Type DDR3 DDR3
Bus Width 64-bit 64-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x8
DirectX Version DirectX 12 DirectX 11.2
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out 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 drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce 830M

Amazon.com

Check prices at:

Radeon R5 M255

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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