Nigel's Weblog

Bought another 6850 video card to go with my exisitng card, motherboard is already crossfire capable, Asrock Extreme 3 Gen 3, it works in eyeinfinity mode, but single monitor or extended monitor i get a 3B BSOD :( checkout my XS thread, any ideas helpfull.

http://www.xtremesystems.org/forums/showthread.php?280150-6850-crossfire-full-screen-bsod-3B

This the latest highway run from the finished lean cruise tune, all new tunes done will come with the revised lean cruise programming. This is set for 15.4:1 for peak flame burn efficiency and has been tested for all conditions.

6.6L/100KM

76.1KM/H AVG Speed

3.69L Used for 55.87KM

Drive Time 44Mins

Well i picked up some extra ram for free, so i now have 4x2GB 1066Mhz corsair DDR2 memory, problem im having is stability with my Motherboard, tested both pairs of ram by themselves and pass memtest86 and other load tests fine so ram is not the issue, all 4 in and fail memtest misrubly, i have increased the chipset voltage 1.40v and DDR2 was at 2.18 read out 2.14 in bios and multimeter on capacitors, so i decided it was a motherboard issue and pulled the thing out to have a look.

As per the photo there are 3 capacitors that feed the DDR2, near the first cap at the bottom of the photo is a Richtek RT9199p DDR Regulator which feeds the voltage, per the datasheet it says for extreme cases you want 1000uf on the Vout pin, the first cap on the vout tested with esr meter and reads at 600uf 0.10 ohm not very low esr and underated for the job, so i had a look through my parts and got 3x Panasonic M high end caps, 6.3volt 1500uf, tested all 3 and put them in, now to my delight im running all 4x sticks stabily at 1066mhz with extreme profile on! Couldn't even boot most of the time at 1066mhz before so looks like it needed more juice! Probably didn't need to change the other 2 but as they were all the same and power the ram good idea to keep them all matched.

So there you go, having ram issues? check your vreg capacitor it could be underrated!

Im posting up my walkthrough as i try to rebuild a 4L60e Transmission.

http://delcohacking.net/forums/viewtopic.php?f=37&t=2202

Ive added some pics i took lately

http://1the1.deviantart.com/