GeForce 820M vs Radeon R9 280X

Intro

Compare those specs to the Radeon R9 280X, which uses a 28 nm design. AMD has set the core frequency at 850 MHz. The GDDR5 RAM runs at a frequency of 1500 MHz on this specific card. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

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 R9 280X		8886 points
GeForce 820M		850 points
	Difference: 8036 (945%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
Radeon R9 280X		250 Watts
	Difference: 235 Watts (1567%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 280X is 1700% quicker than the GeForce 820M overall, due to its higher data rate. (explain)

Radeon R9 280X		288000 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 272000 (1700%)

Texel Rate

The Radeon R9 280X is quite a bit (about 846%) better at AF than the GeForce 820M. (explain)

Radeon R9 280X		108800 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 97296 (846%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 280X is superior to the GeForce 820M, and very much so. (explain)

Radeon R9 280X		27200 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 24324 (846%)

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 (counted in megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 can be applied in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.