Some salesman, manufacturers, editors and self-titled "forumgods" do not even know the difference between single sided (SS) and single rank (SR) or dual sided (DS) and dual rank (DR), mix them with dual channel or are omitted entirely.

• Single sided (SS) = memory chips on one side of RAM module
• Single rank (SR) = one memory chip is connected to the databus and can be accessed
• Dual sided (DS) = memory chips on both sides of RAM module
• Dual rank (DR) = 2 or more memory chips are connected to the databus an can be accessed simultaneously

It can happen, of course, that a single sided (SS) memory is single rank (SR) - same with DS and DR.

Even the JEDEC has made itself a few thoughts to memory rank and DIMMs.

Does it make a difference whether the fan has 16, 18, 20 or 30 dB in benchmarks? - Not really!

The tests are normally carried out with an open housing or on a benchtable - few cm away ... at home however the fewest sit next to the open housing or directly next to it.

The housing swallows already a few dB and the flow direction of the fan also has effects on the perceived volume.

On the other hand, there may be side-effects ... e.g. vibrations or through where the air stream "catches" (hard disk cage, cable,...). Clean up the inside of your housing can make sense.

What some underestimate - too few fans are used. If you can install 2, 3, 4, ... fan's, then do it! Several fan's have to struggle much less than only 1 or 2. Also take into account the volume-flow of the fan (when cooling with radiators, air pressure can also play a major role!). The quietest fan is worth nothing if there is only one lukewarm wind.

Somehow, it also makes no sense to fix the fans to a speed (for example with 7V adapter). In the normal case it is the few Euro value for a PWM fan with appropriate settings.

Additionally as comparison:

• 10 dB - breathing
• 20 dB - leaves rusting
• 20 dB - whisper
• 40 dB - quit library
• 50 dB - moderate rainfall
• 60 dB - normal conversation
• 40-80 dB (or higher) - sounds @gameplay

AGESA

AMD Generic Encapsulated Software Architecture (AGESA)

Dual channel

Dual-channel memory employs two channels. Theoretically this multiplies the data rate by exactly the number of channels present.

Dual rank (DR)

Dual rank (DR) = 2 or more memory chips are connected to the databus an can be accessed simultaneously

Dual sided (DS)

Dual sided (DS) = memory chips on both sides of RAM module

Single channel

In short - do not buy it!

Single rank (SR)

Single rank (SR) = one memory chip is connected to the databus and can be accessed

Single sided (SS)

Single sided (SS) = memory chips on one side of RAM module

Sweetspot

Best price performance ratio

Power Supply Unit (PSU)

The Power Supply Unit (PSU) will provide the needed energy for our PC. These are available in various energy efficiency classes - 80 Plus.

PWM

PWM = Pulse-width modulation

QVL - Qualified Vendor List

The Qualified Vendor List contains pretested vendors which will most likely work.

Missing RAM on the list can still work perfectly. With a little luck you can find in the internet experience reviews of other users.

The manufacturer can not test all memory available on the market. Especially when the motherboard is already on the market for some time, no new memory modules are tested.