GeForce 820M vs Radeon R5 M330

Intro

Compare all of that to the Radeon R5 M330, which makes use of a 28 nm design. AMD has set the core speed at 1030 MHz. The DDR3 RAM runs at a frequency of 900 MHz on this specific model. It features 320 SPUs as well as 20 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 820M should theoretically be a little bit faster than the Radeon R5 M330 in general. (explain)

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

Texel Rate

The Radeon R5 M330 should be quite a bit (about 79%) faster with regards to texture 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 far. (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

Specifications

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

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.