A long long overdue update on LIGHTNING! Even though the system has been up and running for several months now I was overcome by a sudden urgency to extract just a little more performance. Who knows why, perhaps computex, maybe pascal or it could just be the need play with some Quad-SLI insanity with all this foolish chat of its demise.
www.3dmark.com/fs/8687219
After several attempts with different overclocking utilities, different drivers and piddling with a few other factors I eventually succeeded in breaking the 30k barrier with a clock speed of 1215/1750 on all 4 cards. Definitely an impressive score however I knew at least a couple of the cards were capable of more. So off I went to find the limits of each card under water...
ASIC Quality (%) - Max Core Frequency at stock volts (MHz) - Heaven score (fps)
So after a little testing I found that one card was much weaker than the others, one incredibly fast but inefficient and two somewhere in the middle. Although I had tested each card on air originally I really didn't pay attention to where they were placed on the board. Consequently with this new found knowledge it was decided that there probably was a more efficient order to go with.
Naturally this meant it was time to tear down the GPU loop and mess around with the placement of each card. Not a small task but actually quite a fun one and a decent opportunity to take some photographs of LIGHTNING in pieces.
Because it was originally assembled very quickly in time for insomnia I never had chance to show much of how it fits together so this should be quite insightful and a great chance to give everything a good clean ready for the next season of excursions and shows.
With the rearmost black panel removed all of the screws which secure the PSU's and GPU's are exposed. Once removed the yellow and grey rear panels can be taken off making it easy to swap around the cards.
And relatively quickly the back end of the case is removed
Time to take some cards out and already barely visible bits of hardware start to surface!
A motherboard, complete with chipset heatsink and M.2 drive! I knew it was under there all along.
With the back off and the cards out many other new sights appeared.
But it was time to start putting them back.
Lovely EK-HD fittings made it all so easy.
Bye bye M.2! Maybe I will see you again next year.
While putting back the final card I did a little oops and spilled coolant on the rear bank of memory. Nothing a few minutes with the hair dryer and a clean couldn't recover.
All neatly back and ship shape tucked right up to GPU1.
GPU1 check... GPU2 check... GPU3 check... GPU4 check... oh great, they all made it back.
Last chance for some weird perspectives before the case is reassembled.
Finally time for coolant again, the original pastel yellow still looks perfect, identical to the CPU loop, so back in it goes!
POWER!
Time for more tweaking!
Now the weak card is in the slot closest to the CPU followed by the two average ones and finally the fastest card furthest away.
www.3dmark.com/fs/8784147
The best score I got out of it at stock volts with the new GPU order was 31'782, a considerable gain. Now time to ascend to the realms of some serious overvoltage I think!
JR