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GeForce 820M vs Radeon R5 M330

Intro

The GeForce 820M comes with a GPU clock speed of 719 MHz, and the 2048 MB of DDR3 RAM is set to run at 1000 MHz through a 64-bit bus. It also features 96 SPUs, 16 TAUs, and 4 ROPs.

Compare all of that to the Radeon R5 M330, which uses a 28 nm design. AMD has set the core frequency at 1030 MHz. The DDR3 memory is set to run at a frequency of 900 MHz on this particular model. It features 320 SPUs as well as 20 TAUs and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce 820M will be 11% quicker than the Radeon R5 M330 overall, due to its higher data rate. (explain)

GeForce 820M 16000 MB/sec
Radeon R5 M330 14400 MB/sec
Difference: 1600 (11%)

Texel Rate

The Radeon R5 M330 is a lot (approximately 79%) more effective at anisotropic filtering than the GeForce 820M. (explain)

Radeon R5 M330 20600 Mtexels/sec
GeForce 820M 11504 Mtexels/sec
Difference: 9096 (79%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R5 M330 is superior to the GeForce 820M, by a large margin. (explain)

Radeon R5 M330 8240 Mpixels/sec
GeForce 820M 2876 Mpixels/sec
Difference: 5364 (187%)

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 820M

Amazon.com

Check prices at:

Radeon R5 M330

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 820M Radeon R5 M330
Manufacturer nVidia AMD
Year February 2014 2015
Code Name GF117 Oland
Memory 2048 MB 2048 MB
Core Speed 719 MHz 1030 MHz
Memory Speed 2000 MHz 1800 MHz
Power (Max TDP) 15 watts (Unknown) watts
Bandwidth 16000 MB/sec 14400 MB/sec
Texel Rate 11504 Mtexels/sec 20600 Mtexels/sec
Pixel Rate 2876 Mpixels/sec 8240 Mpixels/sec
Unified Shaders 96 320
Texture Mapping Units 16 20
Render Output Units 4 8
Bus Type DDR3 DDR3
Bus Width 64-bit 64-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher 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 maximum number of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs 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 memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 820M

Amazon.com

Check prices at:

Radeon R5 M330

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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