GeForce 820M vs Radeon R5 M230

Intro

Compare all that to the Radeon R5 M230, which uses a 28 nm design. AMD has set the core frequency at 780 MHz. The DDR3 RAM works at a speed of 1000 MHz on this card. It features 320 SPUs along with 20 Texture Address Units and 4 Rasterization Operator 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 R5 M230		1281 points
GeForce 820M		850 points
	Difference: 431 (51%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Both cards have exactly the same bandwidth, so theoretically they should have the same performance. (explain)

Texel Rate

The Radeon R5 M230 should be much (about 36%) better at anisotropic filtering than the GeForce 820M. (explain)

Radeon R5 M230		15600 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 4096 (36%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R5 M230 is a better choice, though only just barely. (explain)

Radeon R5 M230		3120 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 244 (8%)

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: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied 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 this number, the better the 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 video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.