Serial terminal vs Parallel Terminal

[e46]

Serial terminal vs Parallel Terminal what’s the difference between them

[Legolessed]

13 minutes ago, e46 said:

Serial terminal vs Parallel Terminal what’s the difference between them

The difference is pretty minor. The loop tends to stay a fairly consistant temp all the way around so I would do what looks better or is easier. http://www.overclock.net/t/1014950/sli-water-blocks-series-or-parallel

 

hope i helped!

[Catsrules]

Besides the physical connection, I believe Serial has only 1 pair of wires for data transfer one to send and one to receive where as parallel has multiple pairs of wires it can use to send data over.  However serial can go much further distances.

Edit
Oh just realized from the other comment your talking about water cooling not the connections. Opps

[Mick Naughty]

The flow. Over all absolutely nothing. 

[RollinLower]

serial tends to have a slightly higher flow rate, but recycles the warm liquid for the second card. parrallel has the flow split and run through both cards at the same time, at the cost of slightly reduced flow.

 

in the end the difference is pretty minor tough. just get a good D5 pump and it will push the liquid through both terminals no problem!

[PPCs-Matt]

Here's a quick copy/pasta from a blog article I wrote awhile back. Maybe this will help shed some light on reasons to either use parallel or serial loop configs. 

 

Parallel and Serial Loops

The main concept that is often misconstrued is that loop order really isn’t what gives the differences in performance, it’s the flow rate. When you are considering the differences between parallel and serial configurations, you need to examine the differences in resistance each configuration has in your loop. Every block and radiator in your loop adds resistance to the flow of the liquid, therefore the more resistance, the slower the coolant flow.The ideal coolant flow rate in a liquid cooling loop, regardless of components and configuration, is 1gpm (Gallon/Minute) or more. At 1 gpm it takes 250 watts of heat to raise the water in your loop 1C. DDC and D5 pumps can achieve 1 gpm of flow through most standard loops, such as a CPU, GPU and two radiators. Which is why you often see serial loops in a lot of standard water loops. It’s only when you get to more complex loops like SLI and Crossfire GPU configurations that you see parallel and dual loops being used. A parallel GPU configuration alone, is helpful because the resistance in the loop dramatically decreases when the blocks are put in parallel instead of series. The reason behind this is because when you put resistive components into your loop in series, the resistance is additive, however when they are in parallel, the total resistance is less than the smallest amount of resistance in any one of the components. The one key to having a parallel GPU configuration is making sure each GPU block is identical in resistance, or else the flow rates between each block will vary which will result in inconsistent cooling performance. This can be avoided by simply purchasing identical blocks for your cards. If you plan on putting your CPU in parallel with the other blocks in your loop you will want to do some research, or just plain old testing, to see if the difference in resistance to the other blocks is too great to achieve acceptable performance.

[PPCs-Matt]

And just to reiterate some of the math that is behind serial and parallel configurations, to help you understand the "numbers" behind it all. 

Total Resistance for serial configurations = Rt = R1+R2+R3...

Total Resistance for parallel configurations = Rt = 1/R1+1/R2+1/R3

[ZiggyDude]

The maths that is behind serial and parallel configurations for SLI GPU watercooling with two identical water blocks is... 

 

Total Resistance for serial configurations = Rt = R1 + R2

Plugging in some numbers: Rt = 200 = 100 + 100 

 

Total Resistance for parallel configurations = 1/Rt = 1/R1 + 1/R2

Plugging in some numbers:        1/Rt = 1/100 + 1/100
              Rt = 1/0.02 = (0.01 + 0.01)
                       Rt = 50

 

Rt comparison:= 50 Parallel / 200 Serial  = 1/4

 

i.e. In theory, a parallel configuration gives you a quarter of the resistance of a serial configuration via the two water blocks and therefore quadruple the flow (in addition there will be equal temps for each card if they are running the same voltages). In practice, you will not see quadruple the flow due to resistance elsewhere in the loop however.

 

Single card: 100 theoretical resistance
Dual serial cards: 200 theoretical resistance
Dual parallel cards: 50 theoretical resistance