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GeForce 840M vs Radeon R5 M330

Intro

The GeForce 840M has a GPU core clock speed of 1029 MHz, and the 2048 MB of DDR3 RAM is set to run at 1000 MHz through a 64-bit bus. It also features 384 SPUs, 24 TAUs, and 8 Raster Operation Units.

Compare all that to the Radeon R5 M330, which makes use of a 28 nm design. AMD has clocked the core frequency at 1030 MHz. The DDR3 RAM runs at a speed of 900 MHz on this model. It features 320 SPUs along with 20 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce 840M should perform a little bit faster than the Radeon R5 M330 in general. (explain)

GeForce 840M 16000 MB/sec
Radeon R5 M330 14400 MB/sec
Difference: 1600 (11%)

Texel Rate

The GeForce 840M is just a bit (approximately 20%) more effective at texture filtering than the Radeon R5 M330. (explain)

GeForce 840M 24696 Mtexels/sec
Radeon R5 M330 20600 Mtexels/sec
Difference: 4096 (20%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R5 M330 is the winner, but it probably won't make a huge difference. (explain)

Radeon R5 M330 8240 Mpixels/sec
GeForce 840M 8232 Mpixels/sec
Difference: 8 (0%)

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 840M

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 840M Radeon R5 M330
Manufacturer nVidia AMD
Year March 12 2014 2015
Code Name GM108 Oland
Memory 2048 MB 2048 MB
Core Speed 1029 MHz 1030 MHz
Memory Speed 2000 MHz 1800 MHz
Power (Max TDP) 30 watts (Unknown) watts
Bandwidth 16000 MB/sec 14400 MB/sec
Texel Rate 24696 Mtexels/sec 20600 Mtexels/sec
Pixel Rate 8232 Mpixels/sec 8240 Mpixels/sec
Unified Shaders 384 320
Texture Mapping Units 24 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 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units of the card 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few 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

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GeForce 840M

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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