GeForce 820M vs Radeon R9 270

Intro

Compare all that to the Radeon R9 270, which makes use of a 28 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 memory runs at a frequency of 1400 MHz on this specific model. It features 1280 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

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 270		5943 points
GeForce 820M		850 points
	Difference: 5093 (599%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
Radeon R9 270		150 Watts
	Difference: 135 Watts (900%)

Memory Bandwidth

As far as performance goes, the Radeon R9 270 should in theory be much superior to the GeForce 820M overall. (explain)

Radeon R9 270		179200 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 163200 (1020%)

Texel Rate

The Radeon R9 270 is a lot (about 526%) better at anisotropic filtering than the GeForce 820M. (explain)

Radeon R9 270		72000 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 60496 (526%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 270 is the winner, by far. (explain)

Radeon R9 270		28800 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 25924 (901%)

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 information (counted in MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the 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 number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.