Asus M3A32-MVP Deluxe (790FX) *Pictures + Benchmarks + Overclocking*

[Phenomenalspeed]

Yes its odd it seems that it will downclock, using the speeds as being representative of a multi decrease, so going from default x10 to x9 reduced my HT Speed to 1800Mhz, but trying to increase above x10 to x11 for a 2200Mhz HT Speed and even though it lets me change the setting and save and exit in BIOS it doesn't apply the new setting....

My NB speed is at 2400Mhz so that shouldn't be an issue, it should allow to increase up to and including the NB speed....

I've reported the problem to ASUS support, but as usual no reply from them....

BIOS support is a really..REALLY weak area of ASUS IMO.....!!!

Well I managed to work out the HT speed thing...

it seems that if you change the NB multi it then adds/removes options to the HT Speed, but it seems the max it will allow is 2.0Ghz in the HT Speed menu or so I've found so far...

I've currently got

260 x 11 = 2880Mhz
NB x9 = 2340 Mhz
HT 1.8Ghz (x9) = 2340 Mhz
RAM @ DDR2-800 = 1040 Mhz

I think that possibly you misunderstand me slightly. I don't have this motherboard (See my signature). I was saying that my motherboard/BIOS has a very similar problem. Changes made to Hypertransport link frequency (no multiplier option same as your motherboard) in BIOS are not applied when you boot to windows.

So if I've understood you correctly (not sure if I have), changing the northbridge multiplier also indirectly changes the Hypertransport multiplier? But this removes/adds options from the BIOS setting which only allows a maximum of 2Ghz anyway.
So effectively you are using the HT reference clock and the northbridge multiplier to alter your Hypertransport multipler/frequency??

Digressing somewhat (off topic):


Your comments about ASUS support is very off putting. When I decided to get a 790FX+SB600 I was choosing between the top gigabyte (DQ6) and the top ASUS (deluxe Wifi). I will probably get a 790FX+SB750 motherboard sometime in the future and again was looking at these two manufacturers.

I only became aware of the Hypertranport problem after Gigabyte provided me with a beta BIOS fixing the northbridge multiplier. As I was able to increase northbridge multiplier I then tried to match the Hypertransport frequency and discovered the problem. Gigabyte are aware of it now and hopefully working on a fix. I was posting messages on Gigabyte's online technical service and I got a reply to each message a day later and an email notification. They matched my sytem setup and to test the northbridge multiplier. They reproduced the error. A day later they got back to be with a download link to a beta BIOS which fixes it. Even if the M3A79-T Deluxe proves to be an outstanding motherboard presumably ASUS's customer and BIOS support will remain unchanged. So if you do get problems you aren't likely to get much help from ASUS. Gigabyte's return mechandise authorisation process/customer support is certainly not flawless but what I have experienced so far is better than what I am hearing about ASUS.

I was reading the stuff posted by Kab and yourself on the AMD forums about the Voltage regulator module efficiency and instablity of this motherboard etc.
I wonder if such things have been improved with the M3A79-T Deluxe. Only time will tell I suppose.

By the way did you see my last few posts on the AMD Phenom forums? Username = Phenomenaloverclocker. I am a bit suprised with some of your results .I have the same case as you but your cooling is superior to mine.