[SPARC_PWR]

I recently received this board as a replacement to my burnt out 880GMA-E55, and while I love the board and all of its features...I found one major "bug" when trying to overclock my X4 640 cpu.

With the GD65 I cannot adjust the vcore voltage over 1.35v. It seems this is a known "issue" and the GD65 will only allow a certain percentage over the stock voltage. You can gain a little more by using MSI's utility from within Windows, but I dislike overclocking from within windows.

If anyone out there is using this board and has run into similar issues, it seems that I may have found a solution. I flashed my 890FXA-GD65 BIOS to the latest 890FXA-GD70 BIOS and it works beautifully. I now have a ton of voltage control and there are very few ill effects from it. I cannot disable turbo core with using my 1090T, but other than that it seems to be working great. I ran Prime95 all night and didn't have a single error.

If anyone else is like me and wants a little more voltage than the GD65 can provide through BIOS right now, you may want to try flashing it to the latest GD70 BIOS. I hope MSI fixes this issue very soon in the next BIOS update for the GD65, or if anyone else has a workaround please let me know

DO THIS AT YOU OWN RISK

 

[Dromihetes]

Good luck with your experiment.Don t cry if you get it fryed

Those options are missing maybe because the engineers have finally tested the VRM limits ?!

 

[SPARC_PWR]

I have two of these lovely boards sitting here...so there won't be any crying.

Also, the GD65 has much better VRM support than the GD70 and a much more reliable system. MSI tech support blatantly told me that they left features like this off of the GD65 because they didn't want to kill the GD70 market, so certain GD70 only features were "made."

 

[damric]

Strange. I can adjust my voltages up up up in the BIOS on my GD65 board with the original BIOS. I wonder what your problem is?

 

[Dromihetes]

Quote:

Originally Posted by damric Strange. I can adjust my voltages up up up in the BIOS on my GD65 board with the original BIOS. I wonder what your problem is?

Thats interesting.
Diferent revisions or some kind of "fake" mobos ?!

 

[SPARC_PWR]

Would you mind showing me a screenshot of your BIOS? Myself and numerous other members over at XS cannot add more than one adjustment over stock vid with our GD65 boards (i.e. 1.325 stock vid, BIOS limits 1.35v)

I have tried every combination under the sun but cannot manually adjust the CPU voltage over 1.35v on my X4 640.

Thanks

 

[damric]

As you see, you can adjust up to 1.55 with +/- keys.



Now the real question is why does it have a 6-pin connector below the VRM heatsink?

 

[ionstorm66]

The 6-pin is for more power to the PCI-E bus, so that they GPU doesn't pull to much power from the 24pin. Alot of mobo's have a 4-pin molex or 2 for that.

Quote:

Originally Posted by damric As you see, you can adjust up to 1.55 with +/- keys. Now the real question is why does it have a 6-pin connector below the VRM heatsink?

 

[Kvjavs]

Quote:

Originally Posted by ionstorm66 The 6-pin is for more power to the PCI-E bus, so that they GPU doesn't pull to much power from the 24pin. Alot of mobo's have a 4-pin molex or 2 for that.

The majority of the boards I've seen don't have that, but I have seen a few.

I'm just wondering if it's necessary, also how the heck are you gonna use it if you have only 4 6+2 cables and you're running SLI/Crossfire.

 

[reflex99]

it isn't nesesscary with 99% of the cards you could put in that board. Maybe if you were running 2X 6990s, then it would be a good idea, but if you are running that kind of card, you would probably have a 1000w+ psu with 6+ PCIe connectors

 

[Kvjavs]

Quote:

Originally Posted by reflex99 it isn't nesesscary with 99% of the cards you could put in that board. Maybe if you were running 2X 6990s, then it would be a good idea, but if you are running that kind of card, you would probably have a 1000w+ psu with 6+ PCIe connectors

Ah ok thanks.

I'm like 95% sold on getting this board

, so I been scouring any thread I can find with the GD65 in it.

Hopefully I wont get any voltage issues.

 

[stevebor1]

Did flashing your GD65 to GD70 enable IOMMU?

 

[grubby99]

My 890fxa-gd65 lets me push my CPU voltage at least to 1.7v (I know because I tried to overclock my CPU with 1.71v but P95 not stable

) Looking into the issue, it appears that there are at least 2 different BIOS setups that come stock with this board.
CPU Voltage and CPU-VDD appear to be the same, but one maxes out at 1.35v and the other starts are 1.351v. The difference is that one makes large jumps (the one that maxes out at 1.35v) and the other makes .01v increments. Looks up screen shots I am finding 2 different looks in BIOS.