That would be amazing for the community, thank you!
So I finally got round to doing this today.
I tested each of these for any changes in flow rate. Additionally I tested both the MP5works serial and paralell temps on both the GPU and memory junction using OCCT 3D for 10 minutes with 3 Shaders. 10 minutes was fine to get a reading.
In my loop was
480 Rad
MPC35x2 pumps set 31% (equivalent to a D5 on 120% power
CPU EK Velocity Block
EK Strix 3090 Water Block
BarrowCH Ram Water Block.
3 Pairs of Quick Disconnects for testing.
Prior to testing I tested the difference with and without the Ram block on the Ram. I lost 1 litre per minute doing this.
Results are quite boring, but good actually.
Results taken after 10 minutes OCCT +1000 mghz on Ram on Msi afterburner. Gpu stock on EVGA 520W Bios
Stock with no active back plate was
Flow Rate - 4.25 litres / min
GPU temp - 48C
Memory Junction - 74C
With the Parallel MP5 works
Flow Rate - 4.25 litres / min
GPU temp - 44C
Memory Junction - 66C
With the Serial MP5 works
Flow Rate - 4.25 litres / min
GPU temp - 42C
Memory Junction - 62C
The X4 and X6 Ram blocks maintained the 4.25 Litres / minute flow.
I am not sure why the flow did not change, maybe it had something to do with a Ram water block already in there.
I am installing an Aquacomputer Kryographics Next 3090 Strix water block later today with an active back plate, which I will test with the included active backplate alone and adding the MP5works Serial active back plate for double the cooling to see if it makes a difference.