ASUS A8R-MVP stable @325MHz HTT

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mamisano

Platinum Member
Mar 12, 2000
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Just got my system up and running - Had to reinstall XP64, Repair did not work :(

I am impressed by the board, even in stock settings. I love having Cool-n-Quiet actually working with the Opty 165 which I could not do with the DFI.

Check out the Asus site as there are some updated drivers. No new Bios yet, but I am not expecting one until more people have the board :)
 
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AllanLim

Junior Member
Dec 11, 2005
23
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My 165 must be a lemon as it won't go pass 2250 at 1.4v.

And I'm annoyed that my bios doesn't have 1.45v

Grr
 
n7

n7

Elite Member
Jan 4, 2004
21,281
4
81
Originally posted by: AllanLim
My 165 must be a lemon as it won't go pass 2250 at 1.4v.

And I'm annoyed that my bios doesn't have 1.45v

Grr
Click to expand...


On many cheaper mobos, vcore maxes are based on the CPU being used it seems.

But instead of whining, use the over voltage that is provided :roll:
It's there for a reason.

Also, have you done all the necessary steps?
Lowered RAM divider?
Dropped LDT (HT multi) to 3x or on this mobo, 600?


Thanx to the OP for providing with evidence that the mobo AT reviewed wasn't cherry picked :)

Good to see another mobo that can do 320+ HTT :)
 
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AllanLim

Junior Member
Dec 11, 2005
23
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Please read my first post in this thread where I said enabling overvoltage did nothing to Vcore and Vcore maxing at only 1.4v .



PS. Not everybody's negative opinion is whining.
 
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Ryan Norton

Member
Dec 8, 2005
170
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I dunno what the deal is, but I agree with n7's theory that A8R-MVP max vcore is affected by what CPU you have. I have an E4 Venice 3500+ (current is an E3) coming for a PC I'm building for my parents that I'll probably stick in this mobo, just to see what happens. I've seen SpeedFan read 1.5-1.55v so far.
 
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AllanLim

Junior Member
Dec 11, 2005
23
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0
Originally posted by: mamisano
Just got my system up and running - Had to reinstall XP64, Repair did not work :(

I am impressed by the board, even in stock settings. I love having Cool-n-Quiet actually working with the Opty 165 which I could not do with the DFI.

Check out the Asus site as there are some updated drivers. No new Bios yet, but I am not expecting one until more people have the board :)
Click to expand...

Mamisano

Could you pls check what your max VCore is in your BIOS and if enabling VCore overvoltage raises it. Just want to see what your 165 does to your board.

Thnx
 
n7

n7

Elite Member
Jan 4, 2004
21,281
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Originally posted by: AllanLim
Please read my first post in this thread where I said enabling overvoltage did nothing to Vcore and Vcore maxing at only 1.4v .



PS. Not everybody's negative opinion is whining.
Click to expand...


Sorry man.

I completely overlooked that post.

I have another theory regarding the voltages.

It turns out my theory is wrong, so i have editted it out :laugh:
 
M

mamisano

Platinum Member
Mar 12, 2000
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Enabling Overvolting DOES WORK. While testing my settings, I set CPU to 1.4v with OV disabled. Bios showed 1.4 - 1.42v under hardware monitoring. Enabled OV, rebooted back into Bios and hardware monitoring showed 1.47 - 1.49. Looks like it gives a nice .5v or more boost over the limit. Not sure if this is a percentage increase as I did not try enable/disable at different Vcores.

Okay guys, I am heading to bed. Here is a CPU-z screenshot:
http://www.mamisano.com/images/computer/asus_165_cpuz.jpg

Opteron 165
2x 1GB G.Skill ZX
TT Big Typhoon (New Today)
Fortron 450w PS (New Today)

Currently, have the system running 9x280 = 2520Mhz @ 1.4v
Memory is running at 230Mhz 3-3-3-7 1T @ 3.0v

Going to run 2x Prime95 overnight, hopefully it stays up :)

One of my main issues: Board will NOT go over 280 FSB AT ALL. Step to 281, wont boot. Had memory set to 100, loose timings, multiplier at 6, voltages up, and NOTHING. No matter what I have tried.
 
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AllanLim

Junior Member
Dec 11, 2005
23
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Mamisano, that looks more like an increase of 0.07v, not the absolute 0.2v that's been advertized.
 
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Ryan Norton

Member
Dec 8, 2005
170
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Mamisano, that's really weird. Do you have a non-Opteron or non-dual core CPU to try? Looks like it's only 3-4 people who have the board and are posting so far...
 
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AllanLim

Junior Member
Dec 11, 2005
23
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All is forgiven, my lemon is a gem (and I'm a noob :eek:).

Core speed is now 2635 (310*8.5), mem at 239.5, Vcore at 1.45 (overvolting raises max Vcore of 1.4v the 0.05-0.07v confirmed by Mamisano earlier.

Only focused on CPU overclocking at this point.

Priming as I type....



 
M

mamisano

Platinum Member
Mar 12, 2000
2,045
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Allan -> Sorry you are right, its .07 :)

Ryan -> Unfortunately no, only have the 165, only other proc I have is a 3400+ Clawhammer (skt754).

As an update -> I had to lower the CPU to 2400, 9x266 to get dual prime stable. CPUZ shows voltage at 1.35, Asus Probe shows it at 1.39-1.44v under full load. Not sure which one is correct :( The 2400 is better than I could do with the DFI, but I do not have a 1:1 comparisson. I installed a new PS and HS/F with the MSI board - Originally had a DFI Infinity NF4 Ultra, Enermax Whisper 430 and TT SilentBoost. That combo was only stable to about 2200. Going to try some more tweaking today.
 
n7

n7

Elite Member
Jan 4, 2004
21,281
4
81
TBH, this vcore situation is not kewl. A max of 1.55V (if you get lucky like the OP) is just not good enough IMO, especially since everyone else so far isn't even getting 1.5V

I thought my hunt for a future PCI-e mobo might be over, but heck no, looks like that's not gonna happen :(
 
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mamisano

Platinum Member
Mar 12, 2000
2,045
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76
Originally posted by: n7
TBH, this vcore situation is not kewl. A max of 1.55V (if you get lucky like the OP) is just not good enough IMO, especially since everyone else so far isn't even getting 1.5V

I thought my hunt for a future PCI-e mobo might be over, but heck no, looks like that's not gonna happen :(
Click to expand...

I guess it depends on how far you want to go with the board. Being out for only one week, I am sure that future bios upgrades will help it mature, but if you want 1.5v and more, then I guess this board is not for you.

Me, although I would like more from my 165, looks like that 2400 stable is what I am going to stick with. For a $290 processor, I am very happy considering an equivalent 4800+ X2 goes for $780+ :)

I would like to know why I can not go over 280MHz HTT - so if anyone over this speed could post ALL of their Bios settings I would greatly appreciate it.
 
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afrost

Junior Member
Jun 9, 2005
20
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mamisano, I'm assuming you lowered your LVT (or whatever it's called) multiplier.......on my Asrock it's called out as two different settings, one as North Bridge to South Bridge link and I can't remember what the other one is called.
 
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AllanLim

Junior Member
Dec 11, 2005
23
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0
Ryan, are you saying 1.55 is your max because you didn't want to fry your Venice or you can actually set the max as 1.45+0.20v for the board.

n7, what's your new theory?

 
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mamisano

Platinum Member
Mar 12, 2000
2,045
0
76
Originally posted by: afrost
mamisano, I'm assuming you lowered your LVT (or whatever it's called) multiplier.......on my Asrock it's called out as two different settings, one as North Bridge to South Bridge link and I can't remember what the other one is called.
Click to expand...


Thanks, I did that during my testing - tried a few different multipliers from 5x to 9x and none would allow me to go over 280 :(
 
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Ryan Norton

Member
Dec 8, 2005
170
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I mean, I'ave had 1.45v selected, Over Voltage enabled, and been seeing 1.54-55v in Speedfan, which I've had basically open 24/7.

My present OC is

325MHz HTT
x8 CPU multiplier = 2600MHz CPU
133MHz DDR clock = 2:3 multiplier = 218ish MHz 2-2-2-5 1T RAM, 2.85v VDIMM
3x HT

Apps and games are fine but Prime95 torture test keeps stopping: FATAL ERROR: Rounding was 0.5, expected less than 0.4, Hardware failure detected :(
 
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afrost

Junior Member
Jun 9, 2005
20
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0
The highest LVT multiplier (again not sure if this is the right term) would be 5x. This multiplier is not the same as the cpu miltiplier. It controls the speed of the link between the cpu and northbridge, and the link between the northbridge and southbridge. (if i understand correctly) You do not want this to be much above 1000 MHz.

apologies if you already know this.....just making sure.
 
M

mamisano

Platinum Member
Mar 12, 2000
2,045
0
76
Originally posted by: afrost
The highest LVT multiplier (again not sure if this is the right term) would be 5x. This multiplier is not the same as the cpu miltiplier. It controls the speed of the link between the cpu and northbridge, and the link between the northbridge and southbridge. (if i understand correctly) You do not want this to be much above 1000 MHz.

apologies if you already know this.....just making sure.
Click to expand...


Thanks, yeah it is 200/400/600/800/1000 on this board - tried 200, 400 and 600 when trying above 280.
 
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Ryan Norton

Member
Dec 8, 2005
170
0
0
It took me awhile, but I eventually figured out what the different BIOS clockspeed params do. Remember what their abbreviations mean, however... HA!

There's Hyper Transport (Technology), Lightning *something* *something*...

Either of which may be HTT, LVT, or HT! HT is definitely the one you always keep under 1GHz, and I think LVT might be a synonym.
 
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