GeForce 840M vs Radeon RX 460

Intro

Compare those specs to the Radeon RX 460, which comes with a clock speed of 1090 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 128-bit bus, and uses a 14 nm design. It features 896 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX 460		5595 points
GeForce 840M		1600 points
	Difference: 3995 (250%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 840M		30 Watts
Radeon RX 460		75 Watts
	Difference: 45 Watts (150%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 460 will be 600% quicker than the GeForce 840M in general, due to its greater data rate. (explain)

Radeon RX 460		112000 MB/sec
GeForce 840M		16000 MB/sec
	Difference: 96000 (600%)

Texel Rate

The Radeon RX 460 will be much (about 147%) more effective at anisotropic filtering than the GeForce 840M. (explain)

Radeon RX 460		61040 Mtexels/sec
GeForce 840M		24696 Mtexels/sec
	Difference: 36344 (147%)

Pixel Rate

The Radeon RX 460 should be much (more or less 112%) more effective at FSAA than the GeForce 840M, and will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 460		17440 Mpixels/sec
GeForce 840M		8232 Mpixels/sec
	Difference: 9208 (112%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video 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 ROPs by the the core speed of the card. 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 many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.