Gigabyte GA-P67A-UD5 Discussion Thread

[C-N]

You need more vdimm?

Hi C-N,

My PC specs are as follows:

GA P67A-UD4-B3
2600K @ 4.5GHz, @ 1.35V (=1.332V Load), LLC Enabled, energy saving features turned off, Turbo OFF, R-TRCinOS OFF, HT ON.
8GB HyperX Grey @ 1600MHz 1.5V (=1.548V)
2xSapphire 6950 2GB CF
Corsair HX750

I read in one of your posts that for CrossFire PCH core should be at about 1.14V to prevent the graphics driver crashing.

Well, I have had graphics driver crashes (...video driver has stopped responding... then BSoD: 0x116 Video TDR Error) but never under load. I can run 3DMark11, Haven, games etc. Unfortunately, the new Catalyst drivers do cause BSoDs rather often for several people and now I'm not sure if that 3 crashes I have had were brought about by the driver or the low PCH core.

What do you think? Shall I raise the PCH core? I'm a bit worried since I don't know what else would that affect. In fact, I've never read about increasing the PCH core before.

Sorry guys been out of town for the weekend...

@Falkentyne

My RAM is right on the edge of being able to run 2222 @ 1.64 bios 1.654 ET6 but with the JZ BIOS GB adjusted the voltage so you needed to give 1.66 BIOS to get 1.654 ET6 & although it reads the same just isn’t longtime stable in prime!! if I bump to 1.68 ET6 reads 1.68 & its fine but as I cant find any more RAM performance with that BIOS I just as well use what I know F5x.

The B3 BIOS's are pretty much the same for me... no benefit to me, the new one with the 10 load ine levels is also no better for me vcore either droops to far or overshoots more than ever depending on level. In otherwords Its worse for me as the vcore is all over the place.... bear in mind this is not scoped or DMM measured just ET & CPU-Z but its enough for me to make a decision.

@ FL00D

I don’t think there's any literature that says 1 card = x voltage 2 cards = x voltage & I'm fairly sure I didn’t mean to preach to anyone that PCH should be x but I find it helped me to raise it. Bear in mind my rig is @ 5G DDR 2222 & my card is clocked over 900 x 1400 so maybe PCH voltage has more impact on my rig as its running quite high/edgy.

My advice would be to try sticking it to the PCH as it wont hurt especially on B3